Merge tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Paul Burton:
"Main MIPS changes:

- boot_mem_map is removed, providing a nice cleanup made possible by
the recent removal of bootmem.

- Some fixes to atomics, in general providing compiler barriers for
smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs
or MIPS32 systems using cmpxchg64().

- Conversion to the new generic VDSO infrastructure courtesy of
Vincenzo Frascino.

- Removal of undefined behavior in set_io_port_base(), fixing the
behavior of some MIPS kernel configurations when built with recent
clang versions.

- Initial MIPS32 huge page support, functional on at least Ingenic
SoCs.

- pte_special() is now supported for some configurations, allowing
among other things generic fast GUP to be used.

- Miscellaneous fixes & cleanups.

And platform specific changes:

- Major improvements to Ingenic SoC support from Paul Cercueil,
mostly enabled by the inclusion of the new TCU (timer-counter unit)
drivers he's spent a very patient year or so working on. Plus some
fixes for X1000 SoCs from Zhou Yanjie.

- Netgear R6200 v1 systems are now supported by the bcm47xx platform.

- DT updates for BMIPS, Lantiq & Microsemi Ocelot systems"

* tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (89 commits)
MIPS: Detect bad _PFN_SHIFT values
MIPS: Disable pte_special() for MIPS32 with RiXi
MIPS: ralink: deactivate PCI support for SOC_MT7621
mips: compat: vdso: Use legacy syscalls as fallback
MIPS: Drop Loongson _CACHE_* definitions
MIPS: tlbex: Remove cpu_has_local_ebase
MIPS: tlbex: Simplify r3k check
MIPS: Select R3k-style TLB in Kconfig
MIPS: PCI: refactor ioc3 special handling
mips: remove ioremap_cachable
mips/atomic: Fix smp_mb__{before,after}_atomic()
mips/atomic: Fix loongson_llsc_mb() wreckage
mips/atomic: Fix cmpxchg64 barriers
MIPS: Octeon: remove duplicated include from dma-octeon.c
firmware: bcm47xx_nvram: Allow COMPILE_TEST
firmware: bcm47xx_nvram: Correct size_t printf format
MIPS: Treat Loongson Extensions as ASEs
MIPS: Remove dev_err() usage after platform_get_irq()
MIPS: dts: mscc: describe the PTP ready interrupt
MIPS: dts: mscc: describe the PTP register range
...

Documentation/devicetree/bindings/pwm/ingenic,jz47xx-pwm.txt

···
-Ingenic JZ47xx PWM Controller
-=============================
-
-Required properties:
-- compatible: Should be "ingenic,jz4740-pwm"
-- #pwm-cells: Should be 3. See pwm.txt in this directory for a description
-  of the cells format.
-- clocks : phandle to the external clock.
-- clock-names : Should be "ext".
-
-
-Example:
-
-	pwm: pwm@10002000 {
-		compatible = "ingenic,jz4740-pwm";
-		reg = <0x10002000 0x1000>;
-
-		#pwm-cells = <3>;
-
-		clocks = <&ext>;
-		clock-names = "ext";
-	};

Documentation/devicetree/bindings/timer/ingenic,tcu.txt

···
+Ingenic JZ47xx SoCs Timer/Counter Unit devicetree bindings
+==========================================================
+
+For a description of the TCU hardware and drivers, have a look at
+Documentation/mips/ingenic-tcu.txt.
+
+Required properties:
+
+- compatible: Must be one of:
+  * ingenic,jz4740-tcu
+  * ingenic,jz4725b-tcu
+  * ingenic,jz4770-tcu
+  followed by "simple-mfd".
+- reg: Should be the offset/length value corresponding to the TCU registers
+- clocks: List of phandle & clock specifiers for clocks external to the TCU.
+  The "pclk", "rtc" and "ext" clocks should be provided. The "tcu" clock
+  should be provided if the SoC has it.
+- clock-names: List of name strings for the external clocks.
+- #clock-cells: Should be <1>;
+  Clock consumers specify this argument to identify a clock. The valid values
+  may be found in <dt-bindings/clock/ingenic,tcu.h>.
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+  interrupt source. The value should be 1.
+- interrupts : Specifies the interrupt the controller is connected to.
+
+Optional properties:
+
+- ingenic,pwm-channels-mask: Bitmask of TCU channels reserved for PWM use.
+  Default value is 0xfc.
+
+
+Children nodes
+==========================================================
+
+
+PWM node:
+---------
+
+Required properties:
+
+- compatible: Must be one of:
+  * ingenic,jz4740-pwm
+  * ingenic,jz4725b-pwm
+- #pwm-cells: Should be 3. See ../pwm/pwm.txt for a description of the cell
+  format.
+- clocks: List of phandle & clock specifiers for the TCU clocks.
+- clock-names: List of name strings for the TCU clocks.
+
+
+Watchdog node:
+--------------
+
+Required properties:
+
+- compatible: Must be "ingenic,jz4740-watchdog"
+- clocks: phandle to the WDT clock
+- clock-names: should be "wdt"
+
+
+OS Timer node:
+---------
+
+Required properties:
+
+- compatible: Must be one of:
+  * ingenic,jz4725b-ost
+  * ingenic,jz4770-ost
+- clocks: phandle to the OST clock
+- clock-names: should be "ost"
+- interrupts : Specifies the interrupt the OST is connected to.
+
+
+Example
+==========================================================
+
+#include <dt-bindings/clock/jz4770-cgu.h>
+#include <dt-bindings/clock/ingenic,tcu.h>
+
+/ {
+	tcu: timer@10002000 {
+		compatible = "ingenic,jz4770-tcu", "simple-mfd";
+		reg = <0x10002000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x10002000 0x1000>;
+
+		#clock-cells = <1>;
+
+		clocks = <&cgu JZ4770_CLK_RTC
+			  &cgu JZ4770_CLK_EXT
+			  &cgu JZ4770_CLK_PCLK>;
+		clock-names = "rtc", "ext", "pclk";
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <27 26 25>;
+
+		watchdog: watchdog@0 {
+			compatible = "ingenic,jz4740-watchdog";
+			reg = <0x0 0xc>;
+
+			clocks = <&tcu TCU_CLK_WDT>;
+			clock-names = "wdt";
+		};
+
+		pwm: pwm@40 {
+			compatible = "ingenic,jz4740-pwm";
+			reg = <0x40 0x80>;
+
+			#pwm-cells = <3>;
+
+			clocks = <&tcu TCU_CLK_TIMER0
+				  &tcu TCU_CLK_TIMER1
+				  &tcu TCU_CLK_TIMER2
+				  &tcu TCU_CLK_TIMER3
+				  &tcu TCU_CLK_TIMER4
+				  &tcu TCU_CLK_TIMER5
+				  &tcu TCU_CLK_TIMER6
+				  &tcu TCU_CLK_TIMER7>;
+			clock-names = "timer0", "timer1", "timer2", "timer3",
+				      "timer4", "timer5", "timer6", "timer7";
+		};
+
+		ost: timer@e0 {
+			compatible = "ingenic,jz4770-ost";
+			reg = <0xe0 0x20>;
+
+			clocks = <&tcu TCU_CLK_OST>;
+			clock-names = "ost";
+
+			interrupts = <15>;
+		};
+	};
+};

Documentation/devicetree/bindings/watchdog/ingenic,jz4740-wdt.txt

···
-Ingenic Watchdog Timer (WDT) Controller for JZ4740 & JZ4780
-
-Required properties:
-compatible: "ingenic,jz4740-watchdog" or "ingenic,jz4780-watchdog"
-reg: Register address and length for watchdog registers
-clocks: phandle to the RTC clock
-clock-names: should be "rtc"
-
-Example:
-
-watchdog: jz4740-watchdog@10002000 {
-	compatible = "ingenic,jz4740-watchdog";
-	reg = <0x10002000 0x10>;
-
-	clocks = <&cgu JZ4740_CLK_RTC>;
-	clock-names = "rtc";
-};

Documentation/index.rst

···
 .. toctree::
    :maxdepth: 2
 
-   sh/index
    arm/index
    arm64/index
    ia64/index
    m68k/index
-   powerpc/index
    mips/index
    nios2/nios2
    openrisc/index
    parisc/index
+   powerpc/index
    riscv/index
    s390/index
    sh/index

Documentation/mips/index.rst

···
 .. SPDX-License-Identifier: GPL-2.0
 
-=================
-MIPS architecture
-=================
+===========================
+MIPS-specific Documentation
+===========================
 
 .. toctree::
    :maxdepth: 2
+   :numbered:
+
+   ingenic-tcu
 
    au1xxx_ide
 

Documentation/mips/ingenic-tcu.rst

···
+.. SPDX-License-Identifier: GPL-2.0
+
+===============================================
+Ingenic JZ47xx SoCs Timer/Counter Unit hardware
+===============================================
+
+The Timer/Counter Unit (TCU) in Ingenic JZ47xx SoCs is a multi-function
+hardware block. It features up to to eight channels, that can be used as
+counters, timers, or PWM.
+
+- JZ4725B, JZ4750, JZ4755 only have six TCU channels. The other SoCs all
+  have eight channels.
+
+- JZ4725B introduced a separate channel, called Operating System Timer
+  (OST). It is a 32-bit programmable timer. On JZ4760B and above, it is
+  64-bit.
+
+- Each one of the TCU channels has its own clock, which can be reparented to three
+  different clocks (pclk, ext, rtc), gated, and reclocked, through their TCSR register.
+
+    - The watchdog and OST hardware blocks also feature a TCSR register with the same
+      format in their register space.
+    - The TCU registers used to gate/ungate can also gate/ungate the watchdog and
+      OST clocks.
+
+- Each TCU channel works in one of two modes:
+
+    - mode TCU1: channels cannot work in sleep mode, but are easier to
+      operate.
+    - mode TCU2: channels can work in sleep mode, but the operation is a bit
+      more complicated than with TCU1 channels.
+
+- The mode of each TCU channel depends on the SoC used:
+
+    - On the oldest SoCs (up to JZ4740), all of the eight channels operate in
+      TCU1 mode.
+    - On JZ4725B, channel 5 operates as TCU2, the others operate as TCU1.
+    - On newest SoCs (JZ4750 and above), channels 1-2 operate as TCU2, the
+      others operate as TCU1.
+
+- Each channel can generate an interrupt. Some channels share an interrupt
+  line, some don't, and this changes between SoC versions:
+
+    - on older SoCs (JZ4740 and below), channel 0 and channel 1 have their
+      own interrupt line; channels 2-7 share the last interrupt line.
+    - On JZ4725B, channel 0 has its own interrupt; channels 1-5 share one
+      interrupt line; the OST uses the last interrupt line.
+    - on newer SoCs (JZ4750 and above), channel 5 has its own interrupt;
+      channels 0-4 and (if eight channels) 6-7 all share one interrupt line;
+      the OST uses the last interrupt line.
+
+Implementation
+==============
+
+The functionalities of the TCU hardware are spread across multiple drivers:
+
+===========  =====
+clocks       drivers/clk/ingenic/tcu.c
+interrupts   drivers/irqchip/irq-ingenic-tcu.c
+timers       drivers/clocksource/ingenic-timer.c
+OST          drivers/clocksource/ingenic-ost.c
+PWM          drivers/pwm/pwm-jz4740.c
+watchdog     drivers/watchdog/jz4740_wdt.c
+===========  =====
+
+Because various functionalities of the TCU that belong to different drivers
+and frameworks can be controlled from the same registers, all of these
+drivers access their registers through the same regmap.
+
+For more information regarding the devicetree bindings of the TCU drivers,
+have a look at Documentation/devicetree/bindings/mfd/ingenic,tcu.txt.

arch/mips/Kconfig

···
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CMOS_UPDATE
 	select GENERIC_CPU_AUTOPROBE
+	select GENERIC_GETTIMEOFDAY
 	select GENERIC_IOMAP
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
···
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
 	select HAVE_ARCH_SECCOMP_FILTER
 	select HAVE_ARCH_TRACEHOOK
-	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
+	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
 	select HAVE_ASM_MODVERSIONS
 	select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
 	select HAVE_CONTEXT_TRACKING
···
 	select HAVE_STACKPROTECTOR
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
+	select HAVE_GENERIC_VDSO
 	select IRQ_FORCED_THREADING
 	select ISA if EISA
 	select MODULES_USE_ELF_RELA if MODULES && 64BIT
···
 	select RTC_LIB
 	select SYSCTL_EXCEPTION_TRACE
 	select VIRT_TO_BUS
+	select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
 
 menu "Machine selection"
 
···
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_ZBOOT_UART16550
+	select CPU_SUPPORTS_HUGEPAGES
 	select DMA_NONCOHERENT
 	select IRQ_MIPS_CPU
 	select PINCTRL
···
 
 config SYS_SUPPORTS_HUGETLBFS
 	bool
-	depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
+	depends on CPU_SUPPORTS_HUGEPAGES
 	default y
 
 config MIPS_HUGE_TLB_SUPPORT
···
 	depends on SYS_HAS_CPU_R3000
 	select CPU_HAS_WB
 	select CPU_HAS_LOAD_STORE_LR
+	select CPU_R3K_TLB
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_SUPPORTS_HIGHMEM
 	help
···
 	depends on SYS_HAS_CPU_TX39XX
 	select CPU_SUPPORTS_32BIT_KERNEL
 	select CPU_HAS_LOAD_STORE_LR
+	select CPU_R3K_TLB
 
 config CPU_VR41XX
 	bool "R41xx"
···
 	  Only choose this option if you have one of these processors as a
 	  kernel built with this option will not run on any other type of
 	  processor or vice versa.
-
-config CPU_R4300
-	bool "R4300"
-	depends on SYS_HAS_CPU_R4300
-	select CPU_SUPPORTS_32BIT_KERNEL
-	select CPU_SUPPORTS_64BIT_KERNEL
-	select CPU_HAS_LOAD_STORE_LR
-	help
-	  MIPS Technologies R4300-series processors.
 
 config CPU_R4X00
 	bool "R4x00"
···
 	help
 	  MIPS Technologies R5000-series processors other than the Nevada.
 
-config CPU_R5432
-	bool "R5432"
-	depends on SYS_HAS_CPU_R5432
-	select CPU_SUPPORTS_32BIT_KERNEL
-	select CPU_SUPPORTS_64BIT_KERNEL
-	select CPU_SUPPORTS_HUGEPAGES
-	select CPU_HAS_LOAD_STORE_LR
-
 config CPU_R5500
 	bool "R5500"
 	depends on SYS_HAS_CPU_R5500
···
 	select CPU_HAS_LOAD_STORE_LR
 	help
 	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
-
-config CPU_R8000
-	bool "R8000"
-	depends on SYS_HAS_CPU_R8000
-	select CPU_HAS_PREFETCH
-	select CPU_HAS_LOAD_STORE_LR
-	select CPU_SUPPORTS_64BIT_KERNEL
-	help
-	  MIPS Technologies R8000 processors.  Note these processors are
-	  uncommon and the support for them is incomplete.
 
 config CPU_R10000
 	bool "R10000"
···
 config SYS_HAS_CPU_VR41XX
 	bool
 
-config SYS_HAS_CPU_R4300
-	bool
-
 config SYS_HAS_CPU_R4X00
 	bool
 
···
 config SYS_HAS_CPU_R5000
 	bool
 
-config SYS_HAS_CPU_R5432
-	bool
-
 config SYS_HAS_CPU_R5500
 	bool
 
 config SYS_HAS_CPU_NEVADA
-	bool
-
-config SYS_HAS_CPU_R8000
 	bool
 
 config SYS_HAS_CPU_R10000
···
 	bool
 config CPU_SUPPORTS_HUGEPAGES
 	bool
+	depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
 config CPU_SUPPORTS_UNCACHED_ACCELERATED
 	bool
 config MIPS_PGD_C0_CONTEXT
···
 
 config PAGE_SIZE_8KB
 	bool "8kB"
-	depends on CPU_R8000 || CPU_CAVIUM_OCTEON
+	depends on CPU_CAVIUM_OCTEON
 	depends on !MIPS_VA_BITS_48
 	help
 	  Using 8kB page size will result in higher performance kernel at
 	  the price of higher memory consumption.  This option is available
-	  only on R8000 and cnMIPS processors.  Note that you will need a
-	  suitable Linux distribution to support this.
+	  only on cnMIPS processors.  Note that you will need a suitable Linux
+	  distribution to support this.
 
 config PAGE_SIZE_16KB
 	bool "16kB"
···
 
 config CPU_GENERIC_DUMP_TLB
 	bool
-	default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
+	default y if !(CPU_R3000 || CPU_TX39XX)
 
 config MIPS_FP_SUPPORT
 	bool "Floating Point support" if EXPERT
···
 	depends on MIPS_FP_SUPPORT
 	default y if CPU_R3000 || CPU_TX39XX
 
+config CPU_R3K_TLB
+	bool
+
 config CPU_R4K_FPU
 	bool
 	depends on MIPS_FP_SUPPORT
···
 
 config CPU_R4K_CACHE_TLB
 	bool
-	default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
+	default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
 
 config MIPS_MT_SMP
 	bool "MIPS MT SMP support (1 TC on each available VPE)"
···
 config MIPS_ASID_SHIFT
 	int
 	default 6 if CPU_R3000 || CPU_TX39XX
-	default 4 if CPU_R8000
 	default 0
 
 config MIPS_ASID_BITS
···
 	default y
 
 config STACKTRACE_SUPPORT
-	bool
-	default y
-
-config HAVE_LATENCYTOP_SUPPORT
 	bool
 	default y
 

arch/mips/Makefile

···
 #
 cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
 cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
-cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
 cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
 cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
 cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
···
 cflags-$(CONFIG_CPU_MIPS64_R2)	+= -march=mips64r2 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
 cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
-cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
-			-Wa,--trap
 cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
···
 			-Wa,--trap
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mdmx)
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mips3d)
-cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
 cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap

arch/mips/bcm47xx/board.c

···
 	{{BCM47XX_BOARD_LUXUL_XVW_P30_V1, "Luxul XVW-P30 V1"}, "luxul_xvwp30_v1"},
 	{{BCM47XX_BOARD_LUXUL_XWR_600_V1, "Luxul XWR-600 V1"}, "luxul_xwr600_v1"},
 	{{BCM47XX_BOARD_LUXUL_XWR_1750_V1, "Luxul XWR-1750 V1"}, "luxul_xwr1750_v1"},
+	{{BCM47XX_BOARD_NETGEAR_R6200_V1, "Netgear R6200 V1"}, "U12H192T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WGR614V8, "Netgear WGR614 V8"}, "U12H072T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WGR614V9, "Netgear WGR614 V9"}, "U12H094T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WGR614_V10, "Netgear WGR614 V10"}, "U12H139T01_NETGEAR"},

arch/mips/bcm47xx/buttons.c

···
 /* Netgear */
 
 static const struct gpio_keys_button
+bcm47xx_buttons_netgear_r6200_v1[] __initconst = {
+	BCM47XX_GPIO_KEY(2, KEY_RFKILL),
+	BCM47XX_GPIO_KEY(3, KEY_RESTART),
+	BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON),
+};
+
+static const struct gpio_keys_button
 bcm47xx_buttons_netgear_wndr3400v1[] __initconst = {
 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
···
 		err = bcm47xx_copy_bdata(bcm47xx_buttons_motorola_wr850gv2v3);
 		break;
 
+	case BCM47XX_BOARD_NETGEAR_R6200_V1:
+		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_r6200_v1);
+		break;
 	case BCM47XX_BOARD_NETGEAR_WNDR3400V1:
 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400v1);
 		break;

arch/mips/boot/dts/brcm/bcm3368.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
-		periph_cntl: syscon@fff8c000 {
+		clkctl: clock-controller@fff8c004 {
+			compatible = "brcm,bcm3368-clocks";
+			reg = <0xfff8c004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		periph_cntl: syscon@fff8c008 {
 			compatible = "syscon";
-			reg = <0xfff8c000 0xc>;
+			reg = <0xfff8c000 0x4>;
 			native-endian;
 		};
 
 		reboot: syscon-reboot@fff8c008 {
 			compatible = "syscon-reboot";
 			regmap = <&periph_cntl>;
-			offset = <0x8>;
+			offset = <0x0>;
 			mask = <0x1>;
 		};
 

arch/mips/boot/dts/brcm/bcm63268.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
-		periph_cntl: syscon@10000000 {
+		clkctl: clock-controller@10000004 {
+			compatible = "brcm,bcm63268-clocks";
+			reg = <0x10000004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		periph_cntl: syscon@10000008 {
 			compatible = "syscon";
-			reg = <0x10000000 0x14>;
+			reg = <0x10000000 0xc>;
 			native-endian;
 		};
 
 		reboot: syscon-reboot@10000008 {
 			compatible = "syscon-reboot";
 			regmap = <&periph_cntl>;
-			offset = <0x8>;
+			offset = <0x0>;
 			mask = <0x1>;
 		};
 

arch/mips/boot/dts/brcm/bcm6328.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
+		clkctl: clock-controller@10000004 {
+			compatible = "brcm,bcm6328-clocks";
+			reg = <0x10000004 0x4>;
+			#clock-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,

arch/mips/boot/dts/brcm/bcm6358.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
-		periph_cntl: syscon@fffe0000 {
+		clkctl: clock-controller@fffe0004 {
+			compatible = "brcm,bcm6358-clocks";
+			reg = <0xfffe0004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		periph_cntl: syscon@fffe0008 {
 			compatible = "syscon";
-			reg = <0xfffe0000 0xc>;
+			reg = <0xfffe0000 0x4>;
 			native-endian;
 		};
 
 		reboot: syscon-reboot@fffe0008 {
 			compatible = "syscon-reboot";
 			regmap = <&periph_cntl>;
-			offset = <0x8>;
+			offset = <0x0>;
 			mask = <0x1>;
 		};
 

arch/mips/boot/dts/brcm/bcm6362.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
-		periph_cntl: syscon@10000000 {
+		clkctl: clock-controller@10000004 {
+			compatible = "brcm,bcm6362-clocks";
+			reg = <0x10000004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		periph_cntl: syscon@10000008 {
 			compatible = "syscon";
-			reg = <0x10000000 0x14>;
+			reg = <0x10000000 0xc>;
 			native-endian;
 		};
 
 		reboot: syscon-reboot@10000008 {
 			compatible = "syscon-reboot";
 			regmap = <&periph_cntl>;
-			offset = <0x8>;
+			offset = <0x0>;
 			mask = <0x1>;
 		};
 

arch/mips/boot/dts/brcm/bcm6368.dtsi

···
 		compatible = "simple-bus";
 		ranges;
 
-		periph_cntl: syscon@10000000 {
+		clkctl: clock-controller@10000004 {
+			compatible = "brcm,bcm6368-clocks";
+			reg = <0x10000004 0x4>;
+			#clock-cells = <1>;
+		};
+
+		periph_cntl: syscon@100000008 {
 			compatible = "syscon";
-			reg = <0x10000000 0x14>;
+			reg = <0x10000000 0xc>;
 			native-endian;
 		};
 
 		reboot: syscon-reboot@10000008 {
 			compatible = "syscon-reboot";
 			regmap = <&periph_cntl>;
-			offset = <0x8>;
+			offset = <0x0>;
 			mask = <0x1>;
 		};
 

arch/mips/boot/dts/ingenic/ci20.dts

···
 /dts-v1/;
 
 #include "jz4780.dtsi"
+#include <dt-bindings/clock/ingenic,tcu.h>
 #include <dt-bindings/gpio/gpio.h>
 
 / {
···
 		groups = "mmc1-1bit-d", "mmc1-4bit-d";
 		bias-disable;
 	};
+};
+
+&tcu {
+	/* 3 MHz for the system timer and clocksource */
+	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
+	assigned-clock-rates = <3000000>, <3000000>;
 };

arch/mips/boot/dts/ingenic/gcw0.dts

···
 /dts-v1/;
 
 #include "jz4770.dtsi"
+#include <dt-bindings/clock/ingenic,tcu.h>
 
 / {
 	compatible = "gcw,zero", "ingenic,jz4770";
···
 &uhc {
 	/* The WiFi module is connected to the UHC. */
 	status = "okay";
+};
+
+&tcu {
+	/* 750 kHz for the system timer and clocksource */
+	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>;
+	assigned-clock-rates = <750000>, <750000>;
+
+	/* PWM1 is in use, so reserve channel #2 for the clocksource */
+	ingenic,pwm-channels-mask = <0xfa>;
 };

arch/mips/boot/dts/ingenic/jz4740.dtsi

···
 		clock-names = "rtc";
 	};
 
+	tcu: timer@10002000 {
+		compatible = "ingenic,jz4740-tcu", "simple-mfd";
+		reg = <0x10002000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x10002000 0x1000>;
+
+		#clock-cells = <1>;
+
+		clocks = <&cgu JZ4740_CLK_RTC
+			  &cgu JZ4740_CLK_EXT
+			  &cgu JZ4740_CLK_PCLK
+			  &cgu JZ4740_CLK_TCU>;
+		clock-names = "rtc", "ext", "pclk", "tcu";
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <23 22 21>;
+	};
+
 	rtc_dev: rtc@10003000 {
 		compatible = "ingenic,jz4740-rtc";
 		reg = <0x10003000 0x40>;
···
 		};
 	};
 
+	aic: audio-controller@10020000 {
+		compatible = "ingenic,jz4740-i2s";
+		reg = <0x10020000 0x38>;
+
+		#sound-dai-cells = <0>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <18>;
+
+		clocks = <&cgu JZ4740_CLK_AIC>,
+			 <&cgu JZ4740_CLK_I2S>,
+			 <&cgu JZ4740_CLK_EXT>,
+			 <&cgu JZ4740_CLK_PLL_HALF>;
+		clock-names = "aic", "i2s", "ext", "pll half";
+
+		dmas = <&dmac 25 0xffffffff>, <&dmac 24 0xffffffff>;
+		dma-names = "rx", "tx";
+	};
+
+	codec: audio-codec@100200a4 {
+		compatible = "ingenic,jz4740-codec";
+		reg = <0x10020080 0x8>;
+
+		#sound-dai-cells = <0>;
+
+		clocks = <&cgu JZ4740_CLK_AIC>;
+		clock-names = "aic";
+	};
+
+	mmc: mmc@10021000 {
+		compatible = "ingenic,jz4740-mmc";
+		reg = <0x10021000 0x1000>;
+
+		clocks = <&cgu JZ4740_CLK_MMC>;
+		clock-names = "mmc";
+
+		interrupt-parent = <&intc>;
+		interrupts = <14>;
+
+		dmas = <&dmac 27 0xffffffff>, <&dmac 26 0xffffffff>;
+		dma-names = "rx", "tx";
+
+		cap-sd-highspeed;
+		cap-mmc-highspeed;
+		cap-sdio-irq;
+	};
+
 	uart0: serial@10030000 {
 		compatible = "ingenic,jz4740-uart";
 		reg = <0x10030000 0x100>;
···
 		clock-names = "baud", "module";
 	};
 
+	adc: adc@10070000 {
+		compatible = "ingenic,jz4740-adc";
+		reg = <0x10070000 0x30>;
+		#io-channel-cells = <1>;
+
+		clocks = <&cgu JZ4740_CLK_ADC>;
+		clock-names = "adc";
+
+		interrupt-parent = <&intc>;
+		interrupts = <12>;
+	};
+
+	nemc: memory-controller@13010000 {
+		compatible = "ingenic,jz4740-nemc";
+		reg = <0x13010000 0x54>;
+		#address-cells = <2>;
+		#size-cells = <1>;
+		ranges = <1 0 0x18000000 0x4000000
+			  2 0 0x14000000 0x4000000
+			  3 0 0x0c000000 0x4000000
+			  4 0 0x08000000 0x4000000>;
+
+		clocks = <&cgu JZ4740_CLK_MCLK>;
+	};
+
+	ecc: ecc-controller@13010100 {
+		compatible = "ingenic,jz4740-ecc";
+		reg = <0x13010100 0x2C>;
+
+		clocks = <&cgu JZ4740_CLK_MCLK>;
+	};
+
 	dmac: dma-controller@13020000 {
 		compatible = "ingenic,jz4740-dma";
 		reg = <0x13020000 0xbc
···
 		interrupts = <20>;
 
 		clocks = <&cgu JZ4740_CLK_DMA>;
-
-		/* Disable dmac until we have something that uses it */
-		status = "disabled";
 	};
 
 	uhc: uhc@13030000 {
···
 		interrupts = <3>;
 
 		status = "disabled";
+	};
+
+	udc: usb@13040000 {
+		compatible = "ingenic,jz4740-musb";
+		reg = <0x13040000 0x10000>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <24>;
+		interrupt-names = "mc";
+
+		clocks = <&cgu JZ4740_CLK_UDC>;
+		clock-names = "udc";
+	};
+
+	lcd: lcd-controller@13050000 {
+		compatible = "ingenic,jz4740-lcd";
+		reg = <0x13050000 0x1000>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <30>;
+
+		clocks = <&cgu JZ4740_CLK_LCD_PCLK>, <&cgu JZ4740_CLK_LCD>;
+		clock-names = "lcd_pclk", "lcd";
 	};
 };

arch/mips/boot/dts/ingenic/jz4770.dtsi

···
 		#clock-cells = <1>;
 	};
 
+	tcu: timer@10002000 {
+		compatible = "ingenic,jz4770-tcu", "simple-mfd";
+		reg = <0x10002000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x10002000 0x1000>;
+
+		#clock-cells = <1>;
+
+		clocks = <&cgu JZ4770_CLK_RTC
+			  &cgu JZ4770_CLK_EXT
+			  &cgu JZ4770_CLK_PCLK>;
+		clock-names = "rtc", "ext", "pclk";
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <27 26 25>;
+	};
+
 	pinctrl: pin-controller@10010000 {
 		compatible = "ingenic,jz4770-pinctrl";
 		reg = <0x10010000 0x600>;

arch/mips/boot/dts/ingenic/jz4780.dtsi

···
 		#clock-cells = <1>;
 	};
 
+	tcu: timer@10002000 {
+		compatible = "ingenic,jz4780-tcu",
+			     "ingenic,jz4770-tcu",
+			     "simple-mfd";
+		reg = <0x10002000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x10002000 0x1000>;
+
+		#clock-cells = <1>;
+
+		clocks = <&cgu JZ4780_CLK_RTCLK
+			  &cgu JZ4780_CLK_EXCLK
+			  &cgu JZ4780_CLK_PCLK>;
+		clock-names = "rtc", "ext", "pclk";
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <27 26 25>;
+	};
+
 	rtc_dev: rtc@10003000 {
 		compatible = "ingenic,jz4780-rtc";
 		reg = <0x10003000 0x4c>;

arch/mips/boot/dts/ingenic/qi_lb60.dts

···
 
 #include "jz4740.dtsi"
 
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/iio/adc/ingenic,adc.h>
+#include <dt-bindings/clock/ingenic,tcu.h>
+#include <dt-bindings/input/input.h>
+
+#define KEY_QI_QI	KEY_F13
+#define KEY_QI_UPRED	KEY_RIGHTALT
+#define KEY_QI_VOLUP	KEY_VOLUMEUP
+#define KEY_QI_VOLDOWN	KEY_VOLUMEDOWN
+#define KEY_QI_FN	KEY_LEFTCTRL
+
 / {
 	compatible = "qi,lb60", "ingenic,jz4740";
 
 	chosen {
 		stdout-path = &uart0;
+	};
+
+	vcc: regulator@0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc";
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	mmc_power: regulator@1 {
+		compatible = "regulator-fixed";
+		regulator-name = "mmc_vcc";
+		gpio = <&gpd 2 0>;
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	amp_supply: regulator@2 {
+		compatible = "regulator-fixed";
+		regulator-name = "amp_supply";
+		gpio = <&gpd 4 0>;
+		enable-active-high;
+
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	amp: analog-amplifier {
+		compatible = "simple-audio-amplifier";
+		enable-gpios = <&gpb 29 GPIO_ACTIVE_HIGH>;
+		VCC-supply = <&amp_supply>;
+	};
+
+	sound {
+		compatible = "simple-audio-card";
+
+		simple-audio-card,name = "QI LB60";
+		simple-audio-card,format = "i2s";
+
+		simple-audio-card,widgets =
+			"Speaker", "Speaker",
+			"Microphone", "Mic";
+		simple-audio-card,routing =
+			"MIC", "Mic",
+			"Speaker", "OUTL",
+			"Speaker", "OUTR",
+			"INL", "LOUT",
+			"INL", "ROUT";
+
+		simple-audio-card,aux-devs = <&amp>;
+
+		simple-audio-card,bitclock-master = <&dai_codec>;
+		simple-audio-card,frame-master = <&dai_codec>;
+
+		dai_cpu: simple-audio-card,cpu {
+			sound-dai = <&aic>;
+		};
+
+		dai_codec: simple-audio-card,codec {
+			sound-dai = <&codec>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		key {
+			label = "Power";
+			wakeup-source;
+			linux,code = <KEY_POWER>;
+			gpios = <&gpd 29 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keyboard {
+		compatible = "gpio-matrix-keypad";
+
+		col-scan-delay-us = <10>;
+		debounce-delay-ms = <10>;
+		wakeup-source;
+
+		row-gpios = <&gpd 18 0 &gpd 19 0 &gpd 20 0 &gpd 21 0
+			     &gpd 22 0 &gpd 23 0 &gpd 24 0 &gpd 26 0>;
+		col-gpios = <&gpc 10 0 &gpc 11 0 &gpc 12 0 &gpc 13 0
+			     &gpc 14 0 &gpc 15 0 &gpc 16 0 &gpc 17 0>;
+		gpio-activelow;
+
+		linux,keymap = <
+			MATRIX_KEY(0, 0, KEY_F1)	/* S2 */
+			MATRIX_KEY(0, 1, KEY_F2)	/* S3 */
+			MATRIX_KEY(0, 2, KEY_F3)	/* S4 */
+			MATRIX_KEY(0, 3, KEY_F4)	/* S5 */
+			MATRIX_KEY(0, 4, KEY_F5)	/* S6 */
+			MATRIX_KEY(0, 5, KEY_F6)	/* S7 */
+			MATRIX_KEY(0, 6, KEY_F7)	/* S8 */
+
+			MATRIX_KEY(1, 0, KEY_Q)	/* S10 */
+			MATRIX_KEY(1, 1, KEY_W)	/* S11 */
+			MATRIX_KEY(1, 2, KEY_E)	/* S12 */
+			MATRIX_KEY(1, 3, KEY_R)	/* S13 */
+			MATRIX_KEY(1, 4, KEY_T)	/* S14 */
+			MATRIX_KEY(1, 5, KEY_Y)	/* S15 */
+			MATRIX_KEY(1, 6, KEY_U)	/* S16 */
+			MATRIX_KEY(1, 7, KEY_I)	/* S17 */
+			MATRIX_KEY(2, 0, KEY_A)	/* S18 */
+			MATRIX_KEY(2, 1, KEY_S)	/* S19 */
+			MATRIX_KEY(2, 2, KEY_D)	/* S20 */
+			MATRIX_KEY(2, 3, KEY_F)	/* S21 */
+			MATRIX_KEY(2, 4, KEY_G)	/* S22 */
+			MATRIX_KEY(2, 5, KEY_H)	/* S23 */
+			MATRIX_KEY(2, 6, KEY_J)	/* S24 */
+			MATRIX_KEY(2, 7, KEY_K)	/* S25 */
+			MATRIX_KEY(3, 0, KEY_ESC)	/* S26 */
+			MATRIX_KEY(3, 1, KEY_Z)	/* S27 */
+			MATRIX_KEY(3, 2, KEY_X)	/* S28 */
+			MATRIX_KEY(3, 3, KEY_C)	/* S29 */
+			MATRIX_KEY(3, 4, KEY_V)	/* S30 */
+			MATRIX_KEY(3, 5, KEY_B)	/* S31 */
+			MATRIX_KEY(3, 6, KEY_N)	/* S32 */
+			MATRIX_KEY(3, 7, KEY_M)	/* S33 */
+			MATRIX_KEY(4, 0, KEY_TAB)	/* S34 */
+			MATRIX_KEY(4, 1, KEY_CAPSLOCK)	/* S35 */
+			MATRIX_KEY(4, 2, KEY_BACKSLASH)	/* S36 */
+			MATRIX_KEY(4, 3, KEY_APOSTROPHE)	/* S37 */
+			MATRIX_KEY(4, 4, KEY_COMMA)	/* S38 */
+			MATRIX_KEY(4, 5, KEY_DOT)	/* S39 */
+			MATRIX_KEY(4, 6, KEY_SLASH)	/* S40 */
+			MATRIX_KEY(4, 7, KEY_UP)	/* S41 */
+			MATRIX_KEY(5, 0, KEY_O)	/* S42 */
+			MATRIX_KEY(5, 1, KEY_L)	/* S43 */
+			MATRIX_KEY(5, 2, KEY_EQUAL)	/* S44 */
+			MATRIX_KEY(5, 3, KEY_QI_UPRED)	/* S45 */
+			MATRIX_KEY(5, 4, KEY_SPACE)	/* S46 */
+			MATRIX_KEY(5, 5, KEY_QI_QI)	/* S47 */
+			MATRIX_KEY(5, 6, KEY_RIGHTCTRL)	/* S48 */
+			MATRIX_KEY(5, 7, KEY_LEFT)	/* S49 */
+			MATRIX_KEY(6, 0, KEY_F8)	/* S50 */
+			MATRIX_KEY(6, 1, KEY_P)	/* S51 */
+			MATRIX_KEY(6, 2, KEY_BACKSPACE)/* S52 */
+			MATRIX_KEY(6, 3, KEY_ENTER)	/* S53 */
+			MATRIX_KEY(6, 4, KEY_QI_VOLUP)	/* S54 */
+			MATRIX_KEY(6, 5, KEY_QI_VOLDOWN)	/* S55 */
+			MATRIX_KEY(6, 6, KEY_DOWN)	/* S56 */
+			MATRIX_KEY(6, 7, KEY_RIGHT)	/* S57 */
+
+			MATRIX_KEY(7, 0, KEY_LEFTSHIFT)	/* S58 */
+			MATRIX_KEY(7, 1, KEY_LEFTALT) /* S59 */
+			MATRIX_KEY(7, 2, KEY_QI_FN)	/* S60 */
+			>;
+	};
+
+	spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sck-gpios = <&gpc 23 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpc 22 GPIO_ACTIVE_HIGH>;
+		cs-gpios = <&gpc 21 GPIO_ACTIVE_LOW>;
+		num-chipselects = <1>;
+	};
+
+	usb_charger: charger {
+		compatible = "gpio-charger";
+		charger-type = "usb-sdp";
+		gpios = <&gpd 28 GPIO_ACTIVE_LOW>;
+		status-gpios = <&gpc 27 GPIO_ACTIVE_LOW>;
+	};
+
+	simple_battery: battery {
+		compatible = "simple-battery";
+		voltage-min-design-microvolt = <3600000>;
+		voltage-max-design-microvolt = <4200000>;
+	};
+
+	pmu {
+		compatible = "ingenic,jz4740-battery";
+		io-channels = <&adc INGENIC_ADC_BATTERY>;
+		io-channel-names = "battery";
+		power-supplies = <&usb_charger>;
+		monitored-battery = <&simple_battery>;
+	};
+
+	hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&adc INGENIC_ADC_AUX>;
+	};
+
+	panel: panel {
+		compatible = "giantplus,gpm940b0";
+
+		power-supply = <&vcc>;
+
+		port {
+			panel_input: endpoint {
+				remote-endpoint = <&panel_output>;
+			};
+		};
+	};
+
+	usb_phy: usb-phy {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+
+		vcc-supply = <&vcc>;
 	};
 };
 
···
 	pinctrl-0 = <&pins_uart0>;
 };
 
+&uart1 {
+	status = "disabled";
+};
+
+&nemc {
+	nandc: nand-controller@1 {
+		compatible = "ingenic,jz4740-nand";
+		reg = <1 0 0x4000000>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ingenic,bch-controller = <&ecc>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&pins_nemc>;
+
+		rb-gpios = <&gpc 30 GPIO_ACTIVE_LOW>;
+
+		nand@1 {
+			reg = <1>;
+
+			nand-ecc-step-size = <512>;
+			nand-ecc-strength = <4>;
+			nand-ecc-mode = "hw";
+			nand-is-boot-medium;
+			nand-on-flash-bbt;
+
+			partitions {
+				compatible = "fixed-partitions";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				partition@0 {
+					label = "boot";
+					reg = <0x0 0x400000>;
+				};
+
+				partition@400000 {
+					label = "kernel";
+					reg = <0x400000 0x400000>;
+				};
+
+				partition@800000 {
+					label = "rootfs";
+					reg = <0x800000 0x0>;
+				};
+			};
+		};
+	};
+};
+
+&lcd {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pins_lcd>;
+
+	port {
+		panel_output: endpoint {
+			remote-endpoint = <&panel_input>;
+		};
+	};
+};
+
+&udc {
+	phys = <&usb_phy>;
+};
+
 &pinctrl {
+	pins_lcd: lcd {
+		function = "lcd";
+		groups = "lcd-8bit";
+	};
+
+	pins_nemc: nemc {
+		function = "nand";
+		groups = "nand-cs1";
+	};
+
 	pins_uart0: uart0 {
 		function = "uart0";
 		groups = "uart0-data";
 		bias-disable;
 	};
+
+	pins_mmc: mmc {
+		mmc {
+			function = "mmc";
+			groups = "mmc-1bit", "mmc-4bit";
+			bias-disable;
+		};
+
+		mmc-gpios {
+			pins = "PD0", "PD2";
+			bias-disable;
+		};
+	};
+};
+
+&mmc {
+	bus-width = <4>;
+	max-frequency = <24000000>;
+	cd-gpios = <&gpd 0 GPIO_ACTIVE_HIGH>;
+	vmmc-supply = <&mmc_power>;
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pins_mmc>;
+};
+
+&tcu {
+	/* 750 kHz for the system timer and clocksource */
+	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
+	assigned-clock-rates = <750000>, <750000>;
 };

arch/mips/boot/dts/mscc/ocelot.dtsi

···
 			reg = <0x1010000 0x10000>,
 			      <0x1030000 0x10000>,
 			      <0x1080000 0x100>,
+			      <0x10e0000 0x10000>,
 			      <0x11e0000 0x100>,
 			      <0x11f0000 0x100>,
 			      <0x1200000 0x100>,
···
 			      <0x1800000 0x80000>,
 			      <0x1880000 0x10000>,
 			      <0x1060000 0x10000>;
-			reg-names = "sys", "rew", "qs", "port0", "port1",
+			reg-names = "sys", "rew", "qs", "ptp", "port0", "port1",
 				    "port2", "port3", "port4", "port5", "port6",
 				    "port7", "port8", "port9", "port10", "qsys",
 				    "ana", "s2";
-			interrupts = <21 22>;
-			interrupt-names = "xtr", "inj";
+			interrupts = <18 21 22>;
+			interrupt-names = "ptp_rdy", "xtr", "inj";
 
 			ethernet-ports {
 				#address-cells = <1>;

arch/mips/cavium-octeon/dma-octeon.c

···
 
 void __init plat_swiotlb_setup(void)
 {
-	int i;
+	struct memblock_region *mem;
 	phys_addr_t max_addr;
 	phys_addr_t addr_size;
 	size_t swiotlbsize;
···
 	max_addr = 0;
 	addr_size = 0;
 
-	for (i = 0 ; i < boot_mem_map.nr_map; i++) {
-		struct boot_mem_map_entry *e = &boot_mem_map.map[i];
-		if (e->type != BOOT_MEM_RAM && e->type != BOOT_MEM_INIT_RAM)
-			continue;
-
+	for_each_memblock(memory, mem) {
 		/* These addresses map low for PCI. */
-		if (e->addr > 0x410000000ull && !OCTEON_IS_OCTEON2())
+		if (mem->base > 0x410000000ull && !OCTEON_IS_OCTEON2())
 			continue;
 
-		addr_size += e->size;
+		addr_size += mem->size;
 
-		if (max_addr < e->addr + e->size)
-			max_addr = e->addr + e->size;
+		if (max_addr < mem->base + mem->size)
+			max_addr = mem->base + mem->size;
 
 	}
 

arch/mips/cavium-octeon/setup.c

···
 	 * regions next to each other.
 	 */
 	cvmx_bootmem_lock();
-	while ((boot_mem_map.nr_map < BOOT_MEM_MAP_MAX)
-		&& (total < max_memory)) {
+	while (total < max_memory) {
 		memory = cvmx_bootmem_phy_alloc(mem_alloc_size,
 						__pa_symbol(&_end), -1,
 						0x100000,

arch/mips/configs/qi_lb60_defconfig

···
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 # CONFIG_CROSS_MEMORY_ATTACH is not set
-CONFIG_PREEMPT=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSCTL_SYSCALL=y
 CONFIG_KALLSYMS_ALL=y
···
 # CONFIG_BLK_DEV_BSG is not set
 CONFIG_PARTITION_ADVANCED=y
 # CONFIG_EFI_PARTITION is not set
-# CONFIG_IOSCHED_CFQ is not set
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
-# CONFIG_COMPACTION is not set
+CONFIG_CMA=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
···
 CONFIG_IP_ROUTE_VERBOSE=y
 CONFIG_IP_MROUTE=y
 CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_INET_DIAG is not set
 CONFIG_TCP_CONG_ADVANCED=y
 # CONFIG_TCP_CONG_BIC is not set
···
 CONFIG_MTD=y
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_RAW_NAND=y
-CONFIG_MTD_NAND_JZ4740=y
+CONFIG_MTD_NAND_JZ4780=y
+CONFIG_MTD_NAND_JZ4740_ECC=y
 CONFIG_MTD_UBI=y
 CONFIG_NETDEVICES=y
 # CONFIG_WLAN is not set
···
 CONFIG_SPI=y
 CONFIG_SPI_GPIO=y
 CONFIG_POWER_SUPPLY=y
-CONFIG_BATTERY_JZ4740=y
+CONFIG_BATTERY_INGENIC=y
 CONFIG_CHARGER_GPIO=y
-# CONFIG_HWMON is not set
+CONFIG_SENSORS_IIO_HWMON=y
 CONFIG_WATCHDOG=y
 CONFIG_JZ4740_WDT=y
-CONFIG_MFD_JZ4740_ADC=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
-CONFIG_FB=y
-CONFIG_FB_JZ4740=y
-CONFIG_LCD_CLASS_DEVICE=y
-# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
+CONFIG_DRM=y
+CONFIG_DRM_FBDEV_OVERALLOC=200
+CONFIG_DRM_PANEL_SIMPLE=y
+CONFIG_DRM_INGENIC=y
+# CONFIG_LCD_CLASS_DEVICE is not set
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_BACKLIGHT_GENERIC is not set
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
···
 # CONFIG_SND_SPI is not set
 # CONFIG_SND_MIPS is not set
 CONFIG_SND_SOC=y
-CONFIG_SND_JZ4740_SOC=y
-CONFIG_SND_JZ4740_SOC_QI_LB60=y
-CONFIG_USB=y
-CONFIG_USB_OTG_BLACKLIST_HUB=y
+CONFIG_SND_JZ4740_SOC_I2S=y
+CONFIG_SND_SOC_JZ4740_CODEC=y
+CONFIG_SND_SOC_SIMPLE_AMPLIFIER=y
+CONFIG_SND_SIMPLE_CARD=y
 CONFIG_USB_MUSB_HDRC=y
-CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_MUSB_JZ4740=y
+CONFIG_USB_INVENTRA_DMA=y
 CONFIG_NOP_USB_XCEIV=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_DEBUG=y
···
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_JZ4740=y
 CONFIG_DMADEVICES=y
-CONFIG_DMA_JZ4740=y
+CONFIG_DMA_JZ4780=y
+CONFIG_MEMORY=y
+CONFIG_IIO=y
+CONFIG_INGENIC_ADC=y
 CONFIG_PWM=y
 CONFIG_PWM_JZ4740=y
-CONFIG_EXT2_FS=y
-CONFIG_EXT3_FS=y
+CONFIG_EXT4_FS=y
 # CONFIG_DNOTIFY is not set
 CONFIG_VFAT_FS=y
 CONFIG_PROC_KCORE=y

arch/mips/fw/arc/memory.c

···
 
 #undef DEBUG
 
+#define MAX_PROM_MEM 5
+static phys_addr_t prom_mem_base[MAX_PROM_MEM] __initdata;
+static phys_addr_t prom_mem_size[MAX_PROM_MEM] __initdata;
+static unsigned int nr_prom_mem __initdata;
+
 /*
  * For ARC firmware memory functions the unit of meassuring memory is always
  * a 4k page of memory
···
 	}
 #endif
 
+	nr_prom_mem = 0;
 	p = PROM_NULL_MDESC;
 	while ((p = ArcGetMemoryDescriptor(p))) {
 		unsigned long base, size;
···
 		type = prom_memtype_classify(p->type);
 
 		add_memory_region(base, size, type);
+
+		if (type == BOOT_MEM_ROM_DATA) {
+			if (nr_prom_mem >= 5) {
+				pr_err("Too many ROM DATA regions");
+				continue;
+			}
+			prom_mem_base[nr_prom_mem] = base;
+			prom_mem_size[nr_prom_mem] = size;
+			nr_prom_mem++;
+		}
 	}
 }
 
···
 	if (prom_flags & PROM_FLAG_DONT_FREE_TEMP)
 		return;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
-			continue;
-
-		addr = boot_mem_map.map[i].addr;
+	for (i = 0; i < nr_prom_mem; i++) {
 		free_init_pages("prom memory",
-				addr, addr + boot_mem_map.map[i].size);
+			prom_mem_base[i], prom_mem_base[i] + prom_mem_size[i]);
 	}
 }

arch/mips/include/asm/addrspace.h

···
  */
 #define TO_PHYS_MASK	_CONST64_(0x07ffffffffffffff)	/* 2^^59 - 1 */
 
-#ifndef CONFIG_CPU_R8000
-
-/*
- * The R8000 doesn't have the 32-bit compat spaces so we don't define them
- * in order to catch bugs in the source code.
- */
-
 #define COMPAT_K1BASE32		_CONST64_(0xffffffffa0000000)
 #define PHYS_TO_COMPATK1(x)	((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
-
-#endif
 
 #define KDM_TO_PHYS(x)		(_ACAST64_ (x) & TO_PHYS_MASK)
 #define PHYS_TO_K0(x)		(_ACAST64_ (x) | CAC_BASE)

arch/mips/include/asm/atomic.h

···
 		"\t" __scbeqz "	%0, 1b					\n"   \
 		"	.set	pop					\n"   \
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)	      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \
···
 		"	.set	pop					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
 		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \
···
 		"	move	%0, %1					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
 		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \
···
 	if (kernel_uses_llsc) {
 		int temp;
 
+		loongson_llsc_mb();
 		__asm__ __volatile__(
 		"	.set	push					\n"
 		"	.set	"MIPS_ISA_LEVEL"			\n"
···
 		"	.set	pop					\n"
 		"	subu	%0, %1, %3				\n"
 		"	move	%1, %0					\n"
-		"	bltz	%0, 1f					\n"
+		"	bltz	%0, 2f					\n"
 		"	.set	push					\n"
 		"	.set	"MIPS_ISA_LEVEL"			\n"
 		"	sc	%1, %2					\n"
 		"\t" __scbeqz "	%1, 1b					\n"
-		"1:							\n"
+		"2:							\n"
 		"	.set	pop					\n"
 		: "=&r" (result), "=&r" (temp),
 		  "+" GCC_OFF_SMALL_ASM() (v->counter)
-		: "Ir" (i));
+		: "Ir" (i) : __LLSC_CLOBBER);
 	} else {
 		unsigned long flags;
 
···
 		"\t" __scbeqz "	%0, 1b					\n"   \
 		"	.set	pop					\n"   \
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (v->counter)	      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \
···
 		"	.set	pop					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
 		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \
···
 		"	.set	pop					\n"   \
 		: "=&r" (result), "=&r" (temp),				      \
 		  "+" GCC_OFF_SMALL_ASM() (v->counter)			      \
-		: "Ir" (i));						      \
+		: "Ir" (i) : __LLSC_CLOBBER);				      \
 	} else {							      \
 		unsigned long flags;					      \
 									      \

arch/mips/include/asm/barrier.h

···
 #define __smp_wmb()	barrier()
 #endif
 
+/*
+ * When LL/SC does imply order, it must also be a compiler barrier to avoid the
+ * compiler from reordering where the CPU will not. When it does not imply
+ * order, the compiler is also free to reorder across the LL/SC loop and
+ * ordering will be done by smp_llsc_mb() and friends.
+ */
 #if defined(CONFIG_WEAK_REORDERING_BEYOND_LLSC) && defined(CONFIG_SMP)
 #define __WEAK_LLSC_MB		"	sync	\n"
+#define smp_llsc_mb()		__asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")
+#define __LLSC_CLOBBER
 #else
 #define __WEAK_LLSC_MB		"		\n"
+#define smp_llsc_mb()		do { } while (0)
+#define __LLSC_CLOBBER		"memory"
 #endif
-
-#define smp_llsc_mb()	__asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")
 
 #ifdef CONFIG_CPU_CAVIUM_OCTEON
 #define smp_mb__before_llsc() smp_wmb()
···
 
 /*
  * Some Loongson 3 CPUs have a bug wherein execution of a memory access (load,
- * store or pref) in between an ll & sc can cause the sc instruction to
+ * store or prefetch) in between an LL & SC can cause the SC instruction to
  * erroneously succeed, breaking atomicity. Whilst it's unusual to write code
  * containing such sequences, this bug bites harder than we might otherwise
  * expect due to reordering & speculation:
  *
- * 1) A memory access appearing prior to the ll in program order may actually
- *    be executed after the ll - this is the reordering case.
+ * 1) A memory access appearing prior to the LL in program order may actually
+ *    be executed after the LL - this is the reordering case.
  *
- *    In order to avoid this we need to place a memory barrier (ie. a sync
- *    instruction) prior to every ll instruction, in between it & any earlier
- *    memory access instructions. Many of these cases are already covered by
- *    smp_mb__before_llsc() but for the remaining cases, typically ones in
- *    which multiple CPUs may operate on a memory location but ordering is not
- *    usually guaranteed, we use loongson_llsc_mb() below.
+ *    In order to avoid this we need to place a memory barrier (ie. a SYNC
+ *    instruction) prior to every LL instruction, in between it and any earlier
+ *    memory access instructions.
  *
  *    This reordering case is fixed by 3A R2 CPUs, ie. 3A2000 models and later.
  *
- * 2) If a conditional branch exists between an ll & sc with a target outside
- *    of the ll-sc loop, for example an exit upon value mismatch in cmpxchg()
+ * 2) If a conditional branch exists between an LL & SC with a target outside
+ *    of the LL-SC loop, for example an exit upon value mismatch in cmpxchg()
  *    or similar, then misprediction of the branch may allow speculative
- *    execution of memory accesses from outside of the ll-sc loop.
+ *    execution of memory accesses from outside of the LL-SC loop.
  *
- *    In order to avoid this we need a memory barrier (ie. a sync instruction)
+ *    In order to avoid this we need a memory barrier (ie. a SYNC instruction)
  *    at each affected branch target, for which we also use loongson_llsc_mb()
  *    defined below.
  *
  *    This case affects all current Loongson 3 CPUs.
+ *
+ * The above described cases cause an error in the cache coherence protocol;
+ * such that the Invalidate of a competing LL-SC goes 'missing' and SC
+ * erroneously observes its core still has Exclusive state and lets the SC
+ * proceed.
+ *
+ * Therefore the error only occurs on SMP systems.
  */
 #ifdef CONFIG_CPU_LOONGSON3_WORKAROUNDS /* Loongson-3's LLSC workaround */
-#define loongson_llsc_mb()	__asm__ __volatile__(__WEAK_LLSC_MB : : :"memory")
+#define loongson_llsc_mb()	__asm__ __volatile__("sync" : : :"memory")
 #else
 #define loongson_llsc_mb()	do { } while (0)
 #endif

arch/mips/include/asm/bitops.h

···
 		"	beqzl	%0, 1b					\n"
 		"	.set	pop					\n"
 		: "=&r" (temp), "=" GCC_OFF_SMALL_ASM() (*m)
-		: "ir" (1UL << bit), GCC_OFF_SMALL_ASM() (*m));
+		: "ir" (1UL << bit), GCC_OFF_SMALL_ASM() (*m)
+		: __LLSC_CLOBBER);
 #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(bit)) {
 		loongson_llsc_mb();
···
 			"	" __INS "%0, %3, %2, 1			\n"
 			"	" __SC "%0, %1				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-			: "ir" (bit), "r" (~0));
+			: "ir" (bit), "r" (~0)
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 #endif /* CONFIG_CPU_MIPSR2 || CONFIG_CPU_MIPSR6 */
 	} else if (kernel_uses_llsc) {
···
 			"	" __SC	"%0, %1				\n"
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-			: "ir" (1UL << bit));
+			: "ir" (1UL << bit)
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 	} else
 		__mips_set_bit(nr, addr);
···
 		"	beqzl	%0, 1b					\n"
 		"	.set	pop					\n"
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-		: "ir" (~(1UL << bit)));
+		: "ir" (~(1UL << bit))
+		: __LLSC_CLOBBER);
 #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(bit)) {
 		loongson_llsc_mb();
···
 			"	" __INS "%0, $0, %2, 1			\n"
 			"	" __SC "%0, %1				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-			: "ir" (bit));
+			: "ir" (bit)
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 #endif /* CONFIG_CPU_MIPSR2 || CONFIG_CPU_MIPSR6 */
 	} else if (kernel_uses_llsc) {
···
 			"	" __SC "%0, %1				\n"
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-			: "ir" (~(1UL << bit)));
+			: "ir" (~(1UL << bit))
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 	} else
 		__mips_clear_bit(nr, addr);
···
 		"	beqzl	%0, 1b				\n"
 		"	.set	pop				\n"
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-		: "ir" (1UL << bit));
+		: "ir" (1UL << bit)
+		: __LLSC_CLOBBER);
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
···
 			"	" __SC	"%0, %1				\n"
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m)
-			: "ir" (1UL << bit));
+			: "ir" (1UL << bit)
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 	} else
 		__mips_change_bit(nr, addr);
···
 		"	.set	pop					\n"
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
-		: "memory");
+		: __LLSC_CLOBBER);
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
 
+		loongson_llsc_mb();
 		do {
 			__asm__ __volatile__(
 			"	.set	push				\n"
···
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
-			: "memory");
+			: __LLSC_CLOBBER);
 		} while (unlikely(!res));
 
 		res = temp & (1UL << bit);
···
 		"	.set	pop					\n"
 		: "=&r" (temp), "+m" (*m), "=&r" (res)
 		: "r" (1UL << bit)
-		: "memory");
+		: __LLSC_CLOBBER);
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
 
+		loongson_llsc_mb();
 		do {
 			__asm__ __volatile__(
 			"	.set	push				\n"
···
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
-			: "memory");
+			: __LLSC_CLOBBER);
 		} while (unlikely(!res));
 
 		res = temp & (1UL << bit);
···
 		"	.set	pop					\n"
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
-		: "memory");
+		: __LLSC_CLOBBER);
 #if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6)
 	} else if (kernel_uses_llsc && __builtin_constant_p(nr)) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
 
+		loongson_llsc_mb();
 		do {
 			__asm__ __volatile__(
 			"	" __LL	"%0, %1 # test_and_clear_bit	\n"
···
 			"	" __SC	"%0, %1				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "ir" (bit)
-			: "memory");
+			: __LLSC_CLOBBER);
 		} while (unlikely(!temp));
 #endif
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
 
+		loongson_llsc_mb();
 		do {
 			__asm__ __volatile__(
 			"	.set	push				\n"
···
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
-			: "memory");
+			: __LLSC_CLOBBER);
 		} while (unlikely(!res));
 
 		res = temp & (1UL << bit);
···
 		"	.set	pop					\n"
 		: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 		: "r" (1UL << bit)
-		: "memory");
+		: __LLSC_CLOBBER);
 	} else if (kernel_uses_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
 		unsigned long temp;
 
+		loongson_llsc_mb();
 		do {
 			__asm__ __volatile__(
 			"	.set	push				\n"
···
 			"	.set	pop				\n"
 			: "=&r" (temp), "+" GCC_OFF_SMALL_ASM() (*m), "=&r" (res)
 			: "r" (1UL << bit)
-			: "memory");
+			: __LLSC_CLOBBER);
 		} while (unlikely(!res));
 
 		res = temp & (1UL << bit);

arch/mips/include/asm/bootinfo.h

···
 #define  MACH_INGENIC_JZ4740	1	/* JZ4740 SOC		*/
 #define  MACH_INGENIC_JZ4770	2	/* JZ4770 SOC		*/
 #define  MACH_INGENIC_JZ4780	3	/* JZ4780 SOC		*/
+#define  MACH_INGENIC_X1000		4	/* X1000 SOC		*/
 
 extern char *system_type;
 const char *get_system_type(void);
 
 extern unsigned long mips_machtype;
 
-#define BOOT_MEM_MAP_MAX	32
 #define BOOT_MEM_RAM		1
 #define BOOT_MEM_ROM_DATA	2
 #define BOOT_MEM_RESERVED	3
 #define BOOT_MEM_INIT_RAM	4
 #define BOOT_MEM_NOMAP		5
-
-/*
- * A memory map that's built upon what was determined
- * or specified on the command line.
- */
-struct boot_mem_map {
-	int nr_map;
-	struct boot_mem_map_entry {
-		phys_addr_t addr;	/* start of memory segment */
-		phys_addr_t size;	/* size of memory segment */
-		long type;		/* type of memory segment */
-	} map[BOOT_MEM_MAP_MAX];
-};
-
-extern struct boot_mem_map boot_mem_map;
 
 extern void add_memory_region(phys_addr_t start, phys_addr_t size, long type);
 extern void detect_memory_region(phys_addr_t start, phys_addr_t sz_min,  phys_addr_t sz_max);

arch/mips/include/asm/cmpxchg.h

···
 	__typeof(*(m)) __ret;						\
 									\
 	if (kernel_uses_llsc) {						\
+		loongson_llsc_mb();					\
 		__asm__ __volatile__(					\
 		"	.set	push				\n"	\
 		"	.set	noat				\n"	\
···
 		"	.set	pop				\n"	\
 		: "=&r" (__ret), "=" GCC_OFF_SMALL_ASM() (*m)		\
 		: GCC_OFF_SMALL_ASM() (*m), "Jr" (val)			\
-		: "memory");						\
+		: __LLSC_CLOBBER);					\
 	} else {							\
 		unsigned long __flags;					\
 									\
···
 	__typeof(*(m)) __ret;						\
 									\
 	if (kernel_uses_llsc) {						\
+		loongson_llsc_mb();					\
 		__asm__ __volatile__(					\
 		"	.set	push				\n"	\
 		"	.set	noat				\n"	\
···
 		"	.set	pop				\n"	\
 		"2:						\n"	\
 		: "=&r" (__ret), "=" GCC_OFF_SMALL_ASM() (*m)		\
-		: GCC_OFF_SMALL_ASM() (*m), "Jr" (old), "Jr" (new)		\
-		: "memory");						\
+		: GCC_OFF_SMALL_ASM() (*m), "Jr" (old), "Jr" (new)	\
+		: __LLSC_CLOBBER);					\
+		loongson_llsc_mb();					\
 	} else {							\
 		unsigned long __flags;					\
 									\
···
 	 */
 	local_irq_save(flags);
 
+	loongson_llsc_mb();
 	asm volatile(
 	"	.set	push				\n"
 	"	.set	" MIPS_ISA_ARCH_LEVEL "		\n"
···
 	  "r" (old),
 	  "r" (new)
 	: "memory");
+	loongson_llsc_mb();
 
 	local_irq_restore(flags);
 	return ret;
···
 	 * will cause a build error unless cpu_has_64bits is a		\
 	 * compile-time constant 1.					\
 	 */								\
-	if (cpu_has_64bits && kernel_uses_llsc)				\
+	if (cpu_has_64bits && kernel_uses_llsc) {			\
+		smp_mb__before_llsc();					\
 		__res = __cmpxchg64((ptr), __old, __new);		\
-	else								\
+		smp_llsc_mb();						\
+	} else {							\
 		__res = __cmpxchg64_unsupported();			\
+	}								\
 									\
 	__res;								\
 })

arch/mips/include/asm/cpu-features.h

···
 #ifndef cpu_has_pindexed_dcache
 #define cpu_has_pindexed_dcache	(cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
 #endif
-#ifndef cpu_has_local_ebase
-#define cpu_has_local_ebase	1
-#endif
 
 /*
  * I-Cache snoops remote store.	 This only matters on SMP.  Some multiprocessors
···
 
 #ifndef cpu_has_dsp3
 #define cpu_has_dsp3		__ase(MIPS_ASE_DSP3)
+#endif
+
+#ifndef cpu_has_loongson_mmi
+#define cpu_has_loongson_mmi		__ase(MIPS_ASE_LOONGSON_MMI)
+#endif
+
+#ifndef cpu_has_loongson_cam
+#define cpu_has_loongson_cam		__ase(MIPS_ASE_LOONGSON_CAM)
+#endif
+
+#ifndef cpu_has_loongson_ext
+#define cpu_has_loongson_ext		__ase(MIPS_ASE_LOONGSON_EXT)
+#endif
+
+#ifndef cpu_has_loongson_ext2
+#define cpu_has_loongson_ext2		__ase(MIPS_ASE_LOONGSON_EXT2)
 #endif
 
 #ifndef cpu_has_mipsmt

arch/mips/include/asm/cpu-type.h

···
 #if defined(CONFIG_SYS_HAS_CPU_MIPS32_R1) || \
     defined(CONFIG_SYS_HAS_CPU_MIPS32_R2)
 	case CPU_4KEC:
-	case CPU_JZRISC:
+	case CPU_XBURST:
 #endif
 
 #ifdef CONFIG_SYS_HAS_CPU_MIPS32_R2
···
 	case CPU_VR4181A:
 #endif
 
-#ifdef CONFIG_SYS_HAS_CPU_R4300
-	case CPU_R4300:
-	case CPU_R4310:
-#endif
-
 #ifdef CONFIG_SYS_HAS_CPU_R4X00
 	case CPU_R4000PC:
 	case CPU_R4000SC:
···
 	case CPU_R5000:
 #endif
 
-#ifdef CONFIG_SYS_HAS_CPU_R5432
-	case CPU_R5432:
-#endif
-
 #ifdef CONFIG_SYS_HAS_CPU_R5500
 	case CPU_R5500:
 #endif
 
 #ifdef CONFIG_SYS_HAS_CPU_NEVADA
 	case CPU_NEVADA:
-#endif
-
-#ifdef CONFIG_SYS_HAS_CPU_R8000
-	case CPU_R8000:
 #endif
 
 #ifdef CONFIG_SYS_HAS_CPU_R10000

arch/mips/include/asm/cpu.h

···
 #define PRID_COMP_CAVIUM	0x0d0000
 #define PRID_COMP_LOONGSON	0x140000
 #define PRID_COMP_INGENIC_D0	0xd00000	/* JZ4740, JZ4750 */
-#define PRID_COMP_INGENIC_D1	0xd10000	/* JZ4770, JZ4775 */
+#define PRID_COMP_INGENIC_D1	0xd10000	/* JZ4770, JZ4775, X1000 */
 #define PRID_COMP_INGENIC_E1	0xe10000	/* JZ4780 */
 
 /*
···
  * These are the PRID's for when 23:16 == PRID_COMP_INGENIC_*
  */
 
-#define PRID_IMP_JZRISC	       0x0200
+#define PRID_IMP_XBURST	       0x0200
 
 /*
  * These are the PRID's for when 23:16 == PRID_COMP_NETLOGIC
···
 	/*
 	 * R4000 class processors
 	 */
-	CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200, CPU_R4300, CPU_R4310,
+	CPU_R4000PC, CPU_R4000SC, CPU_R4000MC, CPU_R4200,
 	CPU_R4400PC, CPU_R4400SC, CPU_R4400MC, CPU_R4600, CPU_R4640, CPU_R4650,
-	CPU_R4700, CPU_R5000, CPU_R5500, CPU_NEVADA, CPU_R5432, CPU_R10000,
+	CPU_R4700, CPU_R5000, CPU_R5500, CPU_NEVADA, CPU_R10000,
 	CPU_R12000, CPU_R14000, CPU_R16000, CPU_VR41XX, CPU_VR4111, CPU_VR4121,
 	CPU_VR4122, CPU_VR4131, CPU_VR4133, CPU_VR4181, CPU_VR4181A, CPU_RM7000,
 	CPU_SR71000, CPU_TX49XX,
-
-	/*
-	 * R8000 class processors
-	 */
-	CPU_R8000,
 
 	/*
 	 * TX3900 class processors
···
 	 */
 	CPU_4KC, CPU_4KEC, CPU_4KSC, CPU_24K, CPU_34K, CPU_1004K, CPU_74K,
 	CPU_ALCHEMY, CPU_PR4450, CPU_BMIPS32, CPU_BMIPS3300, CPU_BMIPS4350,
-	CPU_BMIPS4380, CPU_BMIPS5000, CPU_JZRISC, CPU_LOONGSON1, CPU_M14KC,
+	CPU_BMIPS4380, CPU_BMIPS5000, CPU_XBURST, CPU_LOONGSON1, CPU_M14KC,
 	CPU_M14KEC, CPU_INTERAPTIV, CPU_P5600, CPU_PROAPTIV, CPU_1074K,
 	CPU_M5150, CPU_I6400, CPU_P6600, CPU_M6250,
 
···
 #define MIPS_ASE_MSA		0x00000100 /* MIPS SIMD Architecture */
 #define MIPS_ASE_DSP3		0x00000200 /* Signal Processing ASE Rev 3*/
 #define MIPS_ASE_MIPS16E2	0x00000400 /* MIPS16e2 */
+#define MIPS_ASE_LOONGSON_MMI	0x00000800 /* Loongson MultiMedia extensions Instructions */
+#define MIPS_ASE_LOONGSON_CAM	0x00001000 /* Loongson CAM */
+#define MIPS_ASE_LOONGSON_EXT	0x00002000 /* Loongson EXTensions */
+#define MIPS_ASE_LOONGSON_EXT2	0x00004000 /* Loongson EXTensions R2 */
 
 #endif /* _ASM_CPU_H */

arch/mips/include/asm/io.h

···
  * instruction, so the lower 16 bits must be zero.  Should be true on
  * on any sane architecture; generic code does not use this assumption.
  */
-extern const unsigned long mips_io_port_base;
+extern unsigned long mips_io_port_base;
 
-/*
- * Gcc will generate code to load the value of mips_io_port_base after each
- * function call which may be fairly wasteful in some cases.  So we don't
- * play quite by the book.  We tell gcc mips_io_port_base is a long variable
- * which solves the code generation issue.  Now we need to violate the
- * aliasing rules a little to make initialization possible and finally we
- * will need the barrier() to fight side effects of the aliasing chat.
- * This trickery will eventually collapse under gcc's optimizer.  Oh well.
- */
 static inline void set_io_port_base(unsigned long base)
 {
-	* (unsigned long *) &mips_io_port_base = base;
-	barrier();
+	mips_io_port_base = base;
 }
 
 /*
···
 #define ioremap_uc ioremap_nocache
 
 /*
- * ioremap_cachable -	map bus memory into CPU space
+ * ioremap_cache -	map bus memory into CPU space
  * @offset:	    bus address of the memory
  * @size:	    size of the resource to map
  *
- * ioremap_nocache performs a platform specific sequence of operations to
+ * ioremap_cache performs a platform specific sequence of operations to
  * make bus memory CPU accessible via the readb/readw/readl/writeb/
  * writew/writel functions and the other mmio helpers. The returned
  * address is not guaranteed to be usable directly as a virtual
···
  * the CPU.  Also enables full write-combining.	 Useful for some
  * memory-like regions on I/O busses.
  */
-#define ioremap_cachable(offset, size)					\
+#define ioremap_cache(offset, size)					\
 	__ioremap_mode((offset), (size), _page_cachable_default)
-#define ioremap_cache ioremap_cachable
 
 /*
  * ioremap_wc     -   map bus memory into CPU space

arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h

···
 	BCM47XX_BOARD_MOTOROLA_WR850GP,
 	BCM47XX_BOARD_MOTOROLA_WR850GV2V3,
 
+	BCM47XX_BOARD_NETGEAR_R6200_V1,
 	BCM47XX_BOARD_NETGEAR_WGR614V8,
 	BCM47XX_BOARD_NETGEAR_WGR614V9,
 	BCM47XX_BOARD_NETGEAR_WGR614_V10,

arch/mips/include/asm/mach-cavium-octeon/cpu-feature-overrides.h

···
 #define cpu_has_ic_fills_f_dc	0
 #define cpu_has_64bits		1
 #define cpu_has_octeon_cache	1
-#define cpu_has_saa		octeon_has_saa()
 #define cpu_has_mips32r1	1
 #define cpu_has_mips32r2	1
 #define cpu_has_mips64r1	1
···
 
 #define cpu_has_rixi		(cpu_data[0].cputype != CPU_CAVIUM_OCTEON)
 
-#define ARCH_HAS_IRQ_PER_CPU	1
 #define ARCH_HAS_SPINLOCK_PREFETCH 1
 #define spin_lock_prefetch(x) prefetch(x)
 #define PREFETCH_STRIDE 128
···
  */
 #define ARCH_HAS_USABLE_BUILTIN_POPCOUNT 1
 #endif
-
-static inline int octeon_has_saa(void)
-{
-	int id;
-	asm volatile ("mfc0 %0, $15,0" : "=r" (id));
-	return id >= 0x000d0300;
-}
 
 /*
  * The last 256MB are reserved for device to device mappings and the

arch/mips/include/asm/mach-cavium-octeon/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-dec/cpu-feature-overrides.h

···
 #define cpu_has_vtag_icache		0
 #define cpu_has_ic_fills_f_dc		0
 #define cpu_has_pindexed_dcache		0
-#define cpu_has_local_ebase		0
 #define cpu_icache_snoops_remote_store	1
 #define cpu_has_mips_4			0
 #define cpu_has_mips_5			0

arch/mips/include/asm/mach-generic/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-ip22/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	1
 #define R4600_V1_HIT_CACHEOP_WAR	1
 #define R4600_V2_HIT_CACHEOP_WAR	1
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-ip27/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-ip28/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-ip32/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-jz4740/gpio.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *  Copyright (C) 2009, Lars-Peter Clausen <[e-mail]>
- *  JZ4740 GPIO pin definitions
- */
-
-#ifndef _JZ_GPIO_H
-#define _JZ_GPIO_H
-
-#define JZ_GPIO_PORTA(x) ((x) + 32 * 0)
-#define JZ_GPIO_PORTB(x) ((x) + 32 * 1)
-#define JZ_GPIO_PORTC(x) ((x) + 32 * 2)
-#define JZ_GPIO_PORTD(x) ((x) + 32 * 3)
-
-#endif

arch/mips/include/asm/mach-jz4740/jz4740_fb.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *  Copyright (C) 2009, Lars-Peter Clausen <[e-mail]>
- */
-
-#ifndef __ASM_MACH_JZ4740_JZ4740_FB_H__
-#define __ASM_MACH_JZ4740_JZ4740_FB_H__
-
-#include <linux/fb.h>
-
-enum jz4740_fb_lcd_type {
-	JZ_LCD_TYPE_GENERIC_16_BIT = 0,
-	JZ_LCD_TYPE_GENERIC_18_BIT = 0 | (1 << 4),
-	JZ_LCD_TYPE_SPECIAL_TFT_1 = 1,
-	JZ_LCD_TYPE_SPECIAL_TFT_2 = 2,
-	JZ_LCD_TYPE_SPECIAL_TFT_3 = 3,
-	JZ_LCD_TYPE_NON_INTERLACED_CCIR656 = 5,
-	JZ_LCD_TYPE_INTERLACED_CCIR656 = 7,
-	JZ_LCD_TYPE_SINGLE_COLOR_STN = 8,
-	JZ_LCD_TYPE_SINGLE_MONOCHROME_STN = 9,
-	JZ_LCD_TYPE_DUAL_COLOR_STN = 10,
-	JZ_LCD_TYPE_DUAL_MONOCHROME_STN = 11,
-	JZ_LCD_TYPE_8BIT_SERIAL = 12,
-};
-
-#define JZ4740_FB_SPECIAL_TFT_CONFIG(start, stop) (((start) << 16) | (stop))
-
-/*
-* width: width of the lcd display in mm
-* height: height of the lcd display in mm
-* num_modes: size of modes
-* modes: list of valid video modes
-* bpp: bits per pixel for the lcd
-* lcd_type: lcd type
-*/
-
-struct jz4740_fb_platform_data {
-	unsigned int width;
-	unsigned int height;
-
-	size_t num_modes;
-	struct fb_videomode *modes;
-
-	unsigned int bpp;
-	enum jz4740_fb_lcd_type lcd_type;
-
-	struct {
-		uint32_t spl;
-		uint32_t cls;
-		uint32_t ps;
-		uint32_t rev;
-	} special_tft_config;
-
-	unsigned pixclk_falling_edge:1;
-	unsigned date_enable_active_low:1;
-};
-
-#endif

arch/mips/include/asm/mach-jz4740/jz4740_mmc.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __LINUX_MMC_JZ4740_MMC
-#define __LINUX_MMC_JZ4740_MMC
-
-struct jz4740_mmc_platform_data {
-	unsigned card_detect_active_low:1;
-	unsigned read_only_active_low:1;
-
-	unsigned data_1bit:1;
-};
-
-#endif

arch/mips/include/asm/mach-jz4740/platform.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *  Copyright (C) 2009-2010, Lars-Peter Clausen <[e-mail]>
- *  JZ4740 platform device definitions
- */
-
-
-#ifndef __JZ4740_PLATFORM_H
-#define __JZ4740_PLATFORM_H
-
-#include <linux/platform_device.h>
-
-extern struct platform_device jz4740_udc_device;
-extern struct platform_device jz4740_udc_xceiv_device;
-extern struct platform_device jz4740_mmc_device;
-extern struct platform_device jz4740_i2c_device;
-extern struct platform_device jz4740_nand_device;
-extern struct platform_device jz4740_framebuffer_device;
-extern struct platform_device jz4740_i2s_device;
-extern struct platform_device jz4740_pcm_device;
-extern struct platform_device jz4740_codec_device;
-extern struct platform_device jz4740_adc_device;
-extern struct platform_device jz4740_pwm_device;
-extern struct platform_device jz4740_dma_device;
-
-#endif

arch/mips/include/asm/mach-loongson64/cpu-feature-overrides.h

···
 #define cpu_has_vint		0
 #define cpu_has_vtag_icache	0
 #define cpu_has_watch		1
-#define cpu_has_local_ebase	0
 
 #ifdef CONFIG_CPU_LOONGSON3
 #define cpu_has_wsbh		1

arch/mips/include/asm/mach-malta/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	1

arch/mips/include/asm/mach-pmcs-msp71xx/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-rc32434/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	1

arch/mips/include/asm/mach-rm/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	1
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mach-sibyte/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 
 #if defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
 

arch/mips/include/asm/mach-tx49xx/war.h

···
 #define R4600_V1_INDEX_ICACHEOP_WAR	0
 #define R4600_V1_HIT_CACHEOP_WAR	0
 #define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
 #define BCM1250_M3_WAR			0
 #define SIBYTE_1956_WAR			0
 #define MIPS4K_ICACHE_REFILL_WAR	0

arch/mips/include/asm/mipsregs.h

···
 #define MIPS_CONF7_IAR		(_ULCAST_(1) << 10)
 #define MIPS_CONF7_AR		(_ULCAST_(1) << 16)
 
+/* Ingenic Config7 bits */
+#define MIPS_CONF7_BTB_LOOP_EN	(_ULCAST_(1) << 4)
+
 /* Config7 Bits specific to MIPS Technologies. */
 
 /* Performance counters implemented Per TC */
···
 __BUILD_SET_C0(cause)
 __BUILD_SET_C0(config)
 __BUILD_SET_C0(config5)
+__BUILD_SET_C0(config7)
 __BUILD_SET_C0(intcontrol)
 __BUILD_SET_C0(intctl)
 __BUILD_SET_C0(srsmap)

arch/mips/include/asm/module.h

···
 #define MODULE_PROC_FAMILY "TX39XX "
 #elif defined CONFIG_CPU_VR41XX
 #define MODULE_PROC_FAMILY "VR41XX "
-#elif defined CONFIG_CPU_R4300
-#define MODULE_PROC_FAMILY "R4300 "
 #elif defined CONFIG_CPU_R4X00
 #define MODULE_PROC_FAMILY "R4X00 "
 #elif defined CONFIG_CPU_TX49XX
 #define MODULE_PROC_FAMILY "TX49XX "
 #elif defined CONFIG_CPU_R5000
 #define MODULE_PROC_FAMILY "R5000 "
-#elif defined CONFIG_CPU_R5432
-#define MODULE_PROC_FAMILY "R5432 "
 #elif defined CONFIG_CPU_R5500
 #define MODULE_PROC_FAMILY "R5500 "
 #elif defined CONFIG_CPU_NEVADA
 #define MODULE_PROC_FAMILY "NEVADA "
-#elif defined CONFIG_CPU_R8000
-#define MODULE_PROC_FAMILY "R8000 "
 #elif defined CONFIG_CPU_R10000
 #define MODULE_PROC_FAMILY "R10000 "
 #elif defined CONFIG_CPU_RM7000

arch/mips/include/asm/octeon/octeon.h

···
 extern void octeon_io_clk_delay(unsigned long);
 
 #define OCTEON_ARGV_MAX_ARGS	64
-#define OCTOEN_SERIAL_LEN	20
+#define OCTEON_SERIAL_LEN	20
 
 struct octeon_boot_descriptor {
 #ifdef __BIG_ENDIAN_BITFIELD
···
 	uint16_t chip_type;
 	uint8_t chip_rev_major;
 	uint8_t chip_rev_minor;
-	char board_serial_number[OCTOEN_SERIAL_LEN];
+	char board_serial_number[OCTEON_SERIAL_LEN];
 	uint8_t mac_addr_base[6];
 	uint8_t mac_addr_count;
 	uint64_t cvmx_desc_vaddr;

arch/mips/include/asm/pgtable-32.h

···
 #include <asm/highmem.h>
 #endif
 
+/*
+ * Regarding 32-bit MIPS huge page support (and the tradeoff it entails):
+ *
+ *  We use the same huge page sizes as 64-bit MIPS. Assuming a 4KB page size,
+ * our 2-level table layout would normally have a PGD entry cover a contiguous
+ * 4MB virtual address region (pointing to a 4KB PTE page of 1,024 32-bit pte_t
+ * pointers, each pointing to a 4KB physical page). The problem is that 4MB,
+ * spanning both halves of a TLB EntryLo0,1 pair, requires 2MB hardware page
+ * support, not one of the standard supported sizes (1MB,4MB,16MB,...).
+ *  To correct for this, when huge pages are enabled, we halve the number of
+ * pointers a PTE page holds, making its last half go to waste. Correspondingly,
+ * we double the number of PGD pages. Overall, page table memory overhead
+ * increases to match 64-bit MIPS, but PTE lookups remain CPU cache-friendly.
+ *
+ * NOTE: We don't yet support huge pages if extended-addressing is enabled
+ *       (i.e. EVA, XPA, 36-bit Alchemy/Netlogic).
+ */
+
 extern int temp_tlb_entry;
 
 /*
···
  */
 
 /* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define PGDIR_SHIFT	(2 * PAGE_SHIFT + PTE_ORDER - PTE_T_LOG2)
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) && !defined(CONFIG_PHYS_ADDR_T_64BIT)
+# define PGDIR_SHIFT	(2 * PAGE_SHIFT + PTE_ORDER - PTE_T_LOG2 - 1)
+#else
+# define PGDIR_SHIFT	(2 * PAGE_SHIFT + PTE_ORDER - PTE_T_LOG2)
+#endif
+
 #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
 #define PGDIR_MASK	(~(PGDIR_SIZE-1))
 
···
  * Entries per page directory level: we use two-level, so
  * we don't really have any PUD/PMD directory physically.
  */
-#define __PGD_ORDER	(32 - 3 * PAGE_SHIFT + PGD_T_LOG2 + PTE_T_LOG2)
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) && !defined(CONFIG_PHYS_ADDR_T_64BIT)
+# define __PGD_ORDER	(32 - 3 * PAGE_SHIFT + PGD_T_LOG2 + PTE_T_LOG2 + 1)
+#else
+# define __PGD_ORDER	(32 - 3 * PAGE_SHIFT + PGD_T_LOG2 + PTE_T_LOG2)
+#endif
+
 #define PGD_ORDER	(__PGD_ORDER >= 0 ? __PGD_ORDER : 0)
 #define PUD_ORDER	aieeee_attempt_to_allocate_pud
-#define PMD_ORDER	1
+#define PMD_ORDER	aieeee_attempt_to_allocate_pmd
 #define PTE_ORDER	0
 
 #define PTRS_PER_PGD	(USER_PTRS_PER_PGD * 2)
-#define PTRS_PER_PTE	((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT) && !defined(CONFIG_PHYS_ADDR_T_64BIT)
+# define PTRS_PER_PTE	((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t) / 2)
+#else
+# define PTRS_PER_PTE	((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
+#endif
 
 #define USER_PTRS_PER_PGD	(0x80000000UL/PGDIR_SIZE)
 #define FIRST_USER_ADDRESS	0UL
···
 
 extern void load_pgd(unsigned long pg_dir);
 
-extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
+extern pte_t invalid_pte_table[PTRS_PER_PTE];
 
 /*
  * Empty pgd/pmd entries point to the invalid_pte_table.
···
 	return pmd_val(pmd) == (unsigned long) invalid_pte_table;
 }
 
-#define pmd_bad(pmd)		(pmd_val(pmd) & ~PAGE_MASK)
+static inline int pmd_bad(pmd_t pmd)
+{
+#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
+	/* pmd_huge(pmd) but inline */
+	if (unlikely(pmd_val(pmd) & _PAGE_HUGE))
+		return 0;
+#endif
+
+	if (unlikely(pmd_val(pmd) & ~PAGE_MASK))
+		return 1;
+
+	return 0;
+}
 
 static inline int pmd_present(pmd_t pmd)
 {
···
 #else
 #define pte_pfn(x)		((unsigned long)((x).pte >> _PFN_SHIFT))
 #define pfn_pte(pfn, prot)	__pte(((unsigned long long)(pfn) << _PFN_SHIFT) | pgprot_val(prot))
+#define pfn_pmd(pfn, prot)	__pmd(((unsigned long long)(pfn) << _PFN_SHIFT) | pgprot_val(prot))
 #endif
 #endif /* defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) */
 
···
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 
 #define pgd_index(address)	(((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+#define pmd_index(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
 
 /* to find an entry in a page-table-directory */
 #define pgd_offset(mm, addr)	((mm)->pgd + pgd_index(addr))
···
 	((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
 #define pte_unmap(pte) ((void)(pte))
 
-#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+#if defined(CONFIG_CPU_R3K_TLB)
 
 /* Swap entries must have VALID bit cleared. */
 #define __swp_type(x)			(((x).val >> 10) & 0x1f)
···
 
 #endif /* defined(CONFIG_PHYS_ADDR_T_64BIT) && defined(CONFIG_CPU_MIPS32) */
 
-#endif /* defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX) */
+#endif /* defined(CONFIG_CPU_R3K_TLB) */
 
 #endif /* _ASM_PGTABLE_32_H */

arch/mips/include/asm/pgtable-bits.h

···
 	_PAGE_WRITE_SHIFT,
 	_PAGE_ACCESSED_SHIFT,
 	_PAGE_MODIFIED_SHIFT,
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+	_PAGE_SPECIAL_SHIFT,
+#endif
 };
 
 /*
···
 	_PAGE_WRITE_SHIFT,
 	_PAGE_ACCESSED_SHIFT,
 	_PAGE_MODIFIED_SHIFT,
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+	_PAGE_SPECIAL_SHIFT,
+#endif
 };
 
-#elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+#elif defined(CONFIG_CPU_R3K_TLB)
 
 /* Page table bits used for r3k systems */
 enum pgtable_bits {
···
 	_PAGE_WRITE_SHIFT,
 	_PAGE_ACCESSED_SHIFT,
 	_PAGE_MODIFIED_SHIFT,
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+	_PAGE_SPECIAL_SHIFT,
+#endif
 
 	/* Used by TLB hardware (placed in EntryLo) */
 	_PAGE_GLOBAL_SHIFT = 8,
···
 	_PAGE_WRITE_SHIFT,
 	_PAGE_ACCESSED_SHIFT,
 	_PAGE_MODIFIED_SHIFT,
-#if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
 	_PAGE_HUGE_SHIFT,
+#endif
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+	_PAGE_SPECIAL_SHIFT,
 #endif
 
 	/* Used by TLB hardware (placed in EntryLo*) */
···
 #define _PAGE_WRITE		(1 << _PAGE_WRITE_SHIFT)
 #define _PAGE_ACCESSED		(1 << _PAGE_ACCESSED_SHIFT)
 #define _PAGE_MODIFIED		(1 << _PAGE_MODIFIED_SHIFT)
-#if defined(CONFIG_64BIT) && defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
+#if defined(CONFIG_MIPS_HUGE_TLB_SUPPORT)
 # define _PAGE_HUGE		(1 << _PAGE_HUGE_SHIFT)
+#endif
+#if defined(CONFIG_ARCH_HAS_PTE_SPECIAL)
+# define _PAGE_SPECIAL		(1 << _PAGE_SPECIAL_SHIFT)
+#else
+# define _PAGE_SPECIAL		0
 #endif
 
 /* Used by TLB hardware (placed in EntryLo*) */
···
 #define _PAGE_GLOBAL		(1 << _PAGE_GLOBAL_SHIFT)
 #define _PAGE_VALID		(1 << _PAGE_VALID_SHIFT)
 #define _PAGE_DIRTY		(1 << _PAGE_DIRTY_SHIFT)
-#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+#if defined(CONFIG_CPU_R3K_TLB)
 # define _CACHE_UNCACHED	(1 << _CACHE_UNCACHED_SHIFT)
 # define _CACHE_MASK		_CACHE_UNCACHED
 # define _PFN_SHIFT		PAGE_SHIFT
···
 /*
  * Cache attributes
  */
-#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+#if defined(CONFIG_CPU_R3K_TLB)
 
 #define _CACHE_CACHABLE_NONCOHERENT 0
 #define _CACHE_UNCACHED_ACCELERATED _CACHE_UNCACHED
···
    use it for "noncoherent" spaces, too.  Shouldn't hurt. */
 
 #define _CACHE_CACHABLE_NONCOHERENT (5<<_CACHE_SHIFT)
-
-#elif defined(CONFIG_CPU_LOONGSON3)
-
-/* Using COHERENT flag for NONCOHERENT doesn't hurt. */
-
-#define _CACHE_CACHABLE_NONCOHERENT (3<<_CACHE_SHIFT)  /* LOONGSON       */
-#define _CACHE_CACHABLE_COHERENT    (3<<_CACHE_SHIFT)  /* LOONGSON-3     */
 
 #elif defined(CONFIG_MACH_INGENIC)
 

arch/mips/include/asm/pgtable.h

···
 static inline void set_pte(pte_t *ptep, pte_t pteval)
 {
 	*ptep = pteval;
-#if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX)
+#if !defined(CONFIG_CPU_R3K_TLB)
 	if (pte_val(pteval) & _PAGE_GLOBAL) {
 		pte_t *buddy = ptep_buddy(ptep);
 		/*
···
 static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	htw_stop();
-#if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX)
+#if !defined(CONFIG_CPU_R3K_TLB)
 	/* Preserve global status for the pair */
 	if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL)
 		set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL));
···
 static inline int pte_write(pte_t pte)	{ return pte.pte_low & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)	{ return pte.pte_low & _PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)	{ return pte.pte_low & _PAGE_ACCESSED; }
+static inline int pte_special(pte_t pte) { return pte.pte_low & _PAGE_SPECIAL; }
 
 static inline pte_t pte_wrprotect(pte_t pte)
 {
···
 	}
 	return pte;
 }
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+	pte.pte_low |= _PAGE_SPECIAL;
+	return pte;
+}
 #else
 static inline int pte_write(pte_t pte)	{ return pte_val(pte) & _PAGE_WRITE; }
 static inline int pte_dirty(pte_t pte)	{ return pte_val(pte) & _PAGE_MODIFIED; }
 static inline int pte_young(pte_t pte)	{ return pte_val(pte) & _PAGE_ACCESSED; }
+static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL; }
 
 static inline pte_t pte_wrprotect(pte_t pte)
 {
···
 	return pte;
 }
 
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+	pte_val(pte) |= _PAGE_SPECIAL;
+	return pte;
+}
+
 #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
 static inline int pte_huge(pte_t pte)	{ return pte_val(pte) & _PAGE_HUGE; }
 
···
 }
 #endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
 #endif
-static inline int pte_special(pte_t pte)	{ return 0; }
-static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
 
 /*
  * Macro to make mark a page protection value as "uncacheable".	 Note

arch/mips/include/asm/syscall.h

···
 		task_thread_info(task)->syscall = regs->regs[2];
 }
 
-static inline unsigned long mips_get_syscall_arg(unsigned long *arg,
+static inline void mips_get_syscall_arg(unsigned long *arg,
 	struct task_struct *task, struct pt_regs *regs, unsigned int n)
 {
 	unsigned long usp __maybe_unused = regs->regs[29];
···
 	case 0: case 1: case 2: case 3:
 		*arg = regs->regs[4 + n];
 
-		return 0;
+		return;
 
 #ifdef CONFIG_32BIT
 	case 4: case 5: case 6: case 7:
-		return get_user(*arg, (int *)usp + n);
+		get_user(*arg, (int *)usp + n);
+		return;
 #endif
 
 #ifdef CONFIG_64BIT
 	case 4: case 5: case 6: case 7:
 #ifdef CONFIG_MIPS32_O32
 		if (test_tsk_thread_flag(task, TIF_32BIT_REGS))
-			return get_user(*arg, (int *)usp + n);
+			get_user(*arg, (int *)usp + n);
 		else
 #endif
 			*arg = regs->regs[4 + n];
 
-		return 0;
+		return;
 #endif
 
 	default:
···
 {
 	unsigned int i = 0;
 	unsigned int n = 6;
-	int ret;
 
 	/* O32 ABI syscall() */
 	if (mips_syscall_is_indirect(task, regs))
 		i++;
 
 	while (n--)
-		ret |= mips_get_syscall_arg(args++, task, regs, i++);
-
-	/*
-	 * No way to communicate an error because this is a void function.
-	 */
-#if 0
-	return ret;
-#endif
+		mips_get_syscall_arg(args++, task, regs, i++);
 }
 
 extern const unsigned long sys_call_table[];

arch/mips/include/asm/vdso.h

···
 #define __ASM_VDSO_H
 
 #include <linux/mm_types.h>
+#include <vdso/datapage.h>
 
 #include <asm/barrier.h>
 
···
 extern struct mips_vdso_image vdso_image_n32;
 #endif
 
-/**
- * union mips_vdso_data - Data provided by the kernel for the VDSO.
- * @xtime_sec:		Current real time (seconds part).
- * @xtime_nsec:		Current real time (nanoseconds part, shifted).
- * @wall_to_mono_sec:	Wall-to-monotonic offset (seconds part).
- * @wall_to_mono_nsec:	Wall-to-monotonic offset (nanoseconds part).
- * @seq_count:		Counter to synchronise updates (odd = updating).
- * @cs_shift:		Clocksource shift value.
- * @clock_mode:		Clocksource to use for time functions.
- * @cs_mult:		Clocksource multiplier value.
- * @cs_cycle_last:	Clock cycle value at last update.
- * @cs_mask:		Clocksource mask value.
- * @tz_minuteswest:	Minutes west of Greenwich (from timezone).
- * @tz_dsttime:		Type of DST correction (from timezone).
- *
- * This structure contains data needed by functions within the VDSO. It is
- * populated by the kernel and mapped read-only into user memory. The time
- * fields are mirrors of internal data from the timekeeping infrastructure.
- *
- * Note: Care should be taken when modifying as the layout must remain the same
- * for both 64- and 32-bit (for 32-bit userland on 64-bit kernel).
- */
 union mips_vdso_data {
-	struct {
-		u64 xtime_sec;
-		u64 xtime_nsec;
-		u64 wall_to_mono_sec;
-		u64 wall_to_mono_nsec;
-		u32 seq_count;
-		u32 cs_shift;
-		u8 clock_mode;
-		u32 cs_mult;
-		u64 cs_cycle_last;
-		u64 cs_mask;
-		s32 tz_minuteswest;
-		s32 tz_dsttime;
-	};
-
+	struct vdso_data data[CS_BASES];
 	u8 page[PAGE_SIZE];
 };
-
-static inline u32 vdso_data_read_begin(const union mips_vdso_data *data)
-{
-	u32 seq;
-
-	while (true) {
-		seq = READ_ONCE(data->seq_count);
-		if (likely(!(seq & 1))) {
-			/* Paired with smp_wmb() in vdso_data_write_*(). */
-			smp_rmb();
-			return seq;
-		}
-
-		cpu_relax();
-	}
-}
-
-static inline bool vdso_data_read_retry(const union mips_vdso_data *data,
-					u32 start_seq)
-{
-	/* Paired with smp_wmb() in vdso_data_write_*(). */
-	smp_rmb();
-	return unlikely(data->seq_count != start_seq);
-}
-
-static inline void vdso_data_write_begin(union mips_vdso_data *data)
-{
-	++data->seq_count;
-
-	/* Ensure sequence update is written before other data page values. */
-	smp_wmb();
-}
-
-static inline void vdso_data_write_end(union mips_vdso_data *data)
-{
-	/* Ensure data values are written before updating sequence again. */
-	smp_wmb();
-	++data->seq_count;
-}
 
 #endif /* __ASM_VDSO_H */

arch/mips/include/asm/vdso/gettimeofday.h

···
+/*
+ * Copyright (C) 2018 ARM Limited
+ * Copyright (C) 2015 Imagination Technologies
+ * Author: Alex Smith <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+#ifndef __ASM_VDSO_GETTIMEOFDAY_H
+#define __ASM_VDSO_GETTIMEOFDAY_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/compiler.h>
+#include <linux/time.h>
+
+#include <asm/vdso/vdso.h>
+#include <asm/clocksource.h>
+#include <asm/io.h>
+#include <asm/unistd.h>
+#include <asm/vdso.h>
+
+#define VDSO_HAS_CLOCK_GETRES		1
+
+#ifdef CONFIG_MIPS_CLOCK_VSYSCALL
+
+static __always_inline long gettimeofday_fallback(
+				struct __kernel_old_timeval *_tv,
+				struct timezone *_tz)
+{
+	register struct timezone *tz asm("a1") = _tz;
+	register struct __kernel_old_timeval *tv asm("a0") = _tv;
+	register long ret asm("v0");
+	register long nr asm("v0") = __NR_gettimeofday;
+	register long error asm("a3");
+
+	asm volatile(
+	"       syscall\n"
+	: "=r" (ret), "=r" (error)
+	: "r" (tv), "r" (tz), "r" (nr)
+	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	return error ? -ret : ret;
+}
+
+#else
+
+static __always_inline long gettimeofday_fallback(
+				struct __kernel_old_timeval *_tv,
+				struct timezone *_tz)
+{
+	return -1;
+}
+
+#endif
+
+static __always_inline long clock_gettime_fallback(
+					clockid_t _clkid,
+					struct __kernel_timespec *_ts)
+{
+	register struct __kernel_timespec *ts asm("a1") = _ts;
+	register clockid_t clkid asm("a0") = _clkid;
+	register long ret asm("v0");
+#if _MIPS_SIM == _MIPS_SIM_ABI64
+	register long nr asm("v0") = __NR_clock_gettime;
+#else
+	register long nr asm("v0") = __NR_clock_gettime64;
+#endif
+	register long error asm("a3");
+
+	asm volatile(
+	"       syscall\n"
+	: "=r" (ret), "=r" (error)
+	: "r" (clkid), "r" (ts), "r" (nr)
+	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	return error ? -ret : ret;
+}
+
+static __always_inline int clock_getres_fallback(
+					clockid_t _clkid,
+					struct __kernel_timespec *_ts)
+{
+	register struct __kernel_timespec *ts asm("a1") = _ts;
+	register clockid_t clkid asm("a0") = _clkid;
+	register long ret asm("v0");
+#if _MIPS_SIM == _MIPS_SIM_ABI64
+	register long nr asm("v0") = __NR_clock_getres;
+#else
+	register long nr asm("v0") = __NR_clock_getres_time64;
+#endif
+	register long error asm("a3");
+
+	asm volatile(
+	"       syscall\n"
+	: "=r" (ret), "=r" (error)
+	: "r" (clkid), "r" (ts), "r" (nr)
+	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	return error ? -ret : ret;
+}
+
+#if _MIPS_SIM != _MIPS_SIM_ABI64
+
+#define VDSO_HAS_32BIT_FALLBACK	1
+
+static __always_inline long clock_gettime32_fallback(
+					clockid_t _clkid,
+					struct old_timespec32 *_ts)
+{
+	register struct old_timespec32 *ts asm("a1") = _ts;
+	register clockid_t clkid asm("a0") = _clkid;
+	register long ret asm("v0");
+	register long nr asm("v0") = __NR_clock_gettime;
+	register long error asm("a3");
+
+	asm volatile(
+	"       syscall\n"
+	: "=r" (ret), "=r" (error)
+	: "r" (clkid), "r" (ts), "r" (nr)
+	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	return error ? -ret : ret;
+}
+
+static __always_inline int clock_getres32_fallback(
+					clockid_t _clkid,
+					struct old_timespec32 *_ts)
+{
+	register struct old_timespec32 *ts asm("a1") = _ts;
+	register clockid_t clkid asm("a0") = _clkid;
+	register long ret asm("v0");
+	register long nr asm("v0") = __NR_clock_getres;
+	register long error asm("a3");
+
+	asm volatile(
+	"       syscall\n"
+	: "=r" (ret), "=r" (error)
+	: "r" (clkid), "r" (ts), "r" (nr)
+	: "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13",
+	  "$14", "$15", "$24", "$25", "hi", "lo", "memory");
+
+	return error ? -ret : ret;
+}
+#endif
+
+#ifdef CONFIG_CSRC_R4K
+
+static __always_inline u64 read_r4k_count(void)
+{
+	unsigned int count;
+
+	__asm__ __volatile__(
+	"	.set push\n"
+	"	.set mips32r2\n"
+	"	rdhwr	%0, $2\n"
+	"	.set pop\n"
+	: "=r" (count));
+
+	return count;
+}
+
+#endif
+
+#ifdef CONFIG_CLKSRC_MIPS_GIC
+
+static __always_inline u64 read_gic_count(const struct vdso_data *data)
+{
+	void __iomem *gic = get_gic(data);
+	u32 hi, hi2, lo;
+
+	do {
+		hi = __raw_readl(gic + sizeof(lo));
+		lo = __raw_readl(gic);
+		hi2 = __raw_readl(gic + sizeof(lo));
+	} while (hi2 != hi);
+
+	return (((u64)hi) << 32) + lo;
+}
+
+#endif
+
+static __always_inline u64 __arch_get_hw_counter(s32 clock_mode)
+{
+#ifdef CONFIG_CLKSRC_MIPS_GIC
+	const struct vdso_data *data = get_vdso_data();
+#endif
+	u64 cycle_now;
+
+	switch (clock_mode) {
+#ifdef CONFIG_CSRC_R4K
+	case VDSO_CLOCK_R4K:
+		cycle_now = read_r4k_count();
+		break;
+#endif
+#ifdef CONFIG_CLKSRC_MIPS_GIC
+	case VDSO_CLOCK_GIC:
+		cycle_now = read_gic_count(data);
+		break;
+#endif
+	default:
+		cycle_now = 0;
+		break;
+	}
+
+	return cycle_now;
+}
+
+static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
+{
+	return get_vdso_data();
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_GETTIMEOFDAY_H */

arch/mips/include/asm/vdso/vsyscall.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_VDSO_VSYSCALL_H
+#define __ASM_VDSO_VSYSCALL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/timekeeper_internal.h>
+#include <vdso/datapage.h>
+
+extern struct vdso_data *vdso_data;
+
+/*
+ * Update the vDSO data page to keep in sync with kernel timekeeping.
+ */
+static __always_inline
+struct vdso_data *__mips_get_k_vdso_data(void)
+{
+	return vdso_data;
+}
+#define __arch_get_k_vdso_data __mips_get_k_vdso_data
+
+static __always_inline
+int __mips_get_clock_mode(struct timekeeper *tk)
+{
+	u32 clock_mode = tk->tkr_mono.clock->archdata.vdso_clock_mode;
+
+	return clock_mode;
+}
+#define __arch_get_clock_mode __mips_get_clock_mode
+
+static __always_inline
+int __mips_use_vsyscall(struct vdso_data *vdata)
+{
+	return (vdata[CS_HRES_COARSE].clock_mode != VDSO_CLOCK_NONE);
+}
+#define __arch_use_vsyscall __mips_use_vsyscall
+
+/* The asm-generic header needs to be included after the definitions above */
+#include <asm-generic/vdso/vsyscall.h>
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_VSYSCALL_H */

arch/mips/include/asm/war.h

···
 #endif
 
 /*
- * When an interrupt happens on a CP0 register read instruction, CPU may
- * lock up or read corrupted values of CP0 registers after it enters
- * the exception handler.
- *
- * This workaround makes sure that we read a "safe" CP0 register as the
- * first thing in the exception handler, which breaks one of the
- * pre-conditions for this problem.
- */
-#ifndef R5432_CP0_INTERRUPT_WAR
-#error Check setting of R5432_CP0_INTERRUPT_WAR for your platform
-#endif
-
-/*
  * Workaround for the Sibyte M3 errata the text of which can be found at
  *
  *   http://sibyte.broadcom.com/hw/bcm1250/docs/pass2errata.txt

arch/mips/jz4740/Makefile

···
 
 # Object file lists.
 
-obj-y += prom.o time.o reset.o setup.o \
-	platform.o timer.o
+obj-y += prom.o time.o reset.o setup.o timer.o
 
 CFLAGS_setup.o = -I$(src)/../../../scripts/dtc/libfdt
-
-# board specific support
-
-obj-$(CONFIG_JZ4740_QI_LB60)	+= board-qi_lb60.o
 
 # PM support
 

arch/mips/jz4740/board-qi_lb60.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * linux/arch/mips/jz4740/board-qi_lb60.c
- *
- * QI_LB60 board support
- *
- * Copyright (c) 2009 Qi Hardware inc.,
- * Author: Xiangfu Liu <[e-mail]>
- * Copyright 2010, Lars-Peter Clausen <[e-mail]>
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/gpio.h>
-#include <linux/gpio/machine.h>
-
-#include <linux/input.h>
-#include <linux/gpio_keys.h>
-#include <linux/input/matrix_keypad.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/spi_gpio.h>
-#include <linux/pinctrl/machine.h>
-#include <linux/pinctrl/pinconf-generic.h>
-#include <linux/power_supply.h>
-#include <linux/power/jz4740-battery.h>
-#include <linux/power/gpio-charger.h>
-#include <linux/pwm.h>
-
-#include <linux/platform_data/jz4740/jz4740_nand.h>
-
-#include <asm/mach-jz4740/gpio.h>
-#include <asm/mach-jz4740/jz4740_fb.h>
-#include <asm/mach-jz4740/jz4740_mmc.h>
-
-#include <linux/regulator/fixed.h>
-#include <linux/regulator/machine.h>
-
-#include <asm/mach-jz4740/platform.h>
-
-/* GPIOs */
-#define QI_LB60_GPIO_KEYOUT(x)		(JZ_GPIO_PORTC(10) + (x))
-#define QI_LB60_GPIO_KEYIN(x)		(JZ_GPIO_PORTD(18) + (x))
-#define QI_LB60_GPIO_KEYIN8		JZ_GPIO_PORTD(26)
-
-/* NAND */
-
-/* Early prototypes of the QI LB60 had only 1GB of NAND.
- * In order to support these devices as well the partition and ecc layout is
- * initialized depending on the NAND size */
-static struct mtd_partition qi_lb60_partitions_1gb[] = {
-	{
-		.name = "NAND BOOT partition",
-		.offset = 0 * 0x100000,
-		.size = 4 * 0x100000,
-	},
-	{
-		.name = "NAND KERNEL partition",
-		.offset = 4 * 0x100000,
-		.size = 4 * 0x100000,
-	},
-	{
-		.name = "NAND ROOTFS partition",
-		.offset = 8 * 0x100000,
-		.size = (504 + 512) * 0x100000,
-	},
-};
-
-static struct mtd_partition qi_lb60_partitions_2gb[] = {
-	{
-		.name = "NAND BOOT partition",
-		.offset = 0 * 0x100000,
-		.size = 4 * 0x100000,
-	},
-	{
-		.name = "NAND KERNEL partition",
-		.offset = 4 * 0x100000,
-		.size = 4 * 0x100000,
-	},
-	{
-		.name = "NAND ROOTFS partition",
-		.offset = 8 * 0x100000,
-		.size = (504 + 512 + 1024) * 0x100000,
-	},
-};
-
-static int qi_lb60_ooblayout_ecc(struct mtd_info *mtd, int section,
-				 struct mtd_oob_region *oobregion)
-{
-	if (section)
-		return -ERANGE;
-
-	oobregion->length = 36;
-	oobregion->offset = 6;
-
-	if (mtd->oobsize == 128) {
-		oobregion->length *= 2;
-		oobregion->offset *= 2;
-	}
-
-	return 0;
-}
-
-static int qi_lb60_ooblayout_free(struct mtd_info *mtd, int section,
-				  struct mtd_oob_region *oobregion)
-{
-	int eccbytes = 36, eccoff = 6;
-
-	if (section > 1)
-		return -ERANGE;
-
-	if (mtd->oobsize == 128) {
-		eccbytes *= 2;
-		eccoff *= 2;
-	}
-
-	if (!section) {
-		oobregion->offset = 2;
-		oobregion->length = eccoff - 2;
-	} else {
-		oobregion->offset = eccoff + eccbytes;
-		oobregion->length = mtd->oobsize - oobregion->offset;
-	}
-
-	return 0;
-}
-
-static const struct mtd_ooblayout_ops qi_lb60_ooblayout_ops = {
-	.ecc = qi_lb60_ooblayout_ecc,
-	.free = qi_lb60_ooblayout_free,
-};
-
-static void qi_lb60_nand_ident(struct platform_device *pdev,
-		struct mtd_info *mtd, struct mtd_partition **partitions,
-		int *num_partitions)
-{
-	struct nand_chip *chip = mtd_to_nand(mtd);
-
-	if (chip->page_shift == 12) {
-		*partitions = qi_lb60_partitions_2gb;
-		*num_partitions = ARRAY_SIZE(qi_lb60_partitions_2gb);
-	} else {
-		*partitions = qi_lb60_partitions_1gb;
-		*num_partitions = ARRAY_SIZE(qi_lb60_partitions_1gb);
-	}
-
-	mtd_set_ooblayout(mtd, &qi_lb60_ooblayout_ops);
-}
-
-static struct jz_nand_platform_data qi_lb60_nand_pdata = {
-	.ident_callback = qi_lb60_nand_ident,
-	.banks = { 1 },
-};
-
-static struct gpiod_lookup_table qi_lb60_nand_gpio_table = {
-	.dev_id = "jz4740-nand.0",
-	.table = {
-		GPIO_LOOKUP("GPIOC", 30, "busy", 0),
-		{ },
-	},
-};
-
-
-/* Keyboard*/
-
-#define KEY_QI_QI	KEY_F13
-#define KEY_QI_UPRED	KEY_RIGHTALT
-#define KEY_QI_VOLUP	KEY_VOLUMEUP
-#define KEY_QI_VOLDOWN	KEY_VOLUMEDOWN
-#define KEY_QI_FN	KEY_LEFTCTRL
-
-static const uint32_t qi_lb60_keymap[] = {
-	KEY(0, 0, KEY_F1),	/* S2 */
-	KEY(0, 1, KEY_F2),	/* S3 */
-	KEY(0, 2, KEY_F3),	/* S4 */
-	KEY(0, 3, KEY_F4),	/* S5 */
-	KEY(0, 4, KEY_F5),	/* S6 */
-	KEY(0, 5, KEY_F6),	/* S7 */
-	KEY(0, 6, KEY_F7),	/* S8 */
-
-	KEY(1, 0, KEY_Q),	/* S10 */
-	KEY(1, 1, KEY_W),	/* S11 */
-	KEY(1, 2, KEY_E),	/* S12 */
-	KEY(1, 3, KEY_R),	/* S13 */
-	KEY(1, 4, KEY_T),	/* S14 */
-	KEY(1, 5, KEY_Y),	/* S15 */
-	KEY(1, 6, KEY_U),	/* S16 */
-	KEY(1, 7, KEY_I),	/* S17 */
-	KEY(2, 0, KEY_A),	/* S18 */
-	KEY(2, 1, KEY_S),	/* S19 */
-	KEY(2, 2, KEY_D),	/* S20 */
-	KEY(2, 3, KEY_F),	/* S21 */
-	KEY(2, 4, KEY_G),	/* S22 */
-	KEY(2, 5, KEY_H),	/* S23 */
-	KEY(2, 6, KEY_J),	/* S24 */
-	KEY(2, 7, KEY_K),	/* S25 */
-	KEY(3, 0, KEY_ESC),	/* S26 */
-	KEY(3, 1, KEY_Z),	/* S27 */
-	KEY(3, 2, KEY_X),	/* S28 */
-	KEY(3, 3, KEY_C),	/* S29 */
-	KEY(3, 4, KEY_V),	/* S30 */
-	KEY(3, 5, KEY_B),	/* S31 */
-	KEY(3, 6, KEY_N),	/* S32 */
-	KEY(3, 7, KEY_M),	/* S33 */
-	KEY(4, 0, KEY_TAB),	/* S34 */
-	KEY(4, 1, KEY_CAPSLOCK),	/* S35 */
-	KEY(4, 2, KEY_BACKSLASH),	/* S36 */
-	KEY(4, 3, KEY_APOSTROPHE),	/* S37 */
-	KEY(4, 4, KEY_COMMA),	/* S38 */
-	KEY(4, 5, KEY_DOT),	/* S39 */
-	KEY(4, 6, KEY_SLASH),	/* S40 */
-	KEY(4, 7, KEY_UP),	/* S41 */
-	KEY(5, 0, KEY_O),	/* S42 */
-	KEY(5, 1, KEY_L),	/* S43 */
-	KEY(5, 2, KEY_EQUAL),	/* S44 */
-	KEY(5, 3, KEY_QI_UPRED),	/* S45 */
-	KEY(5, 4, KEY_SPACE),	/* S46 */
-	KEY(5, 5, KEY_QI_QI),	/* S47 */
-	KEY(5, 6, KEY_RIGHTCTRL),	/* S48 */
-	KEY(5, 7, KEY_LEFT),	/* S49 */
-	KEY(6, 0, KEY_F8),	/* S50 */
-	KEY(6, 1, KEY_P),	/* S51 */
-	KEY(6, 2, KEY_BACKSPACE),/* S52 */
-	KEY(6, 3, KEY_ENTER),	/* S53 */
-	KEY(6, 4, KEY_QI_VOLUP),	/* S54 */
-	KEY(6, 5, KEY_QI_VOLDOWN),	/* S55 */
-	KEY(6, 6, KEY_DOWN),	/* S56 */
-	KEY(6, 7, KEY_RIGHT),	/* S57 */
-
-	KEY(7, 0, KEY_LEFTSHIFT),	/* S58 */
-	KEY(7, 1, KEY_LEFTALT), /* S59 */
-	KEY(7, 2, KEY_QI_FN),	/* S60 */
-};
-
-static const struct matrix_keymap_data qi_lb60_keymap_data = {
-	.keymap		= qi_lb60_keymap,
-	.keymap_size	= ARRAY_SIZE(qi_lb60_keymap),
-};
-
-static const unsigned int qi_lb60_keypad_cols[] = {
-	QI_LB60_GPIO_KEYOUT(0),
-	QI_LB60_GPIO_KEYOUT(1),
-	QI_LB60_GPIO_KEYOUT(2),
-	QI_LB60_GPIO_KEYOUT(3),
-	QI_LB60_GPIO_KEYOUT(4),
-	QI_LB60_GPIO_KEYOUT(5),
-	QI_LB60_GPIO_KEYOUT(6),
-	QI_LB60_GPIO_KEYOUT(7),
-};
-
-static const unsigned int qi_lb60_keypad_rows[] = {
-	QI_LB60_GPIO_KEYIN(0),
-	QI_LB60_GPIO_KEYIN(1),
-	QI_LB60_GPIO_KEYIN(2),
-	QI_LB60_GPIO_KEYIN(3),
-	QI_LB60_GPIO_KEYIN(4),
-	QI_LB60_GPIO_KEYIN(5),
-	QI_LB60_GPIO_KEYIN(6),
-	QI_LB60_GPIO_KEYIN8,
-};
-
-static struct matrix_keypad_platform_data qi_lb60_pdata = {
-	.keymap_data = &qi_lb60_keymap_data,
-	.col_gpios	= qi_lb60_keypad_cols,
-	.row_gpios	= qi_lb60_keypad_rows,
-	.num_col_gpios	= ARRAY_SIZE(qi_lb60_keypad_cols),
-	.num_row_gpios	= ARRAY_SIZE(qi_lb60_keypad_rows),
-	.col_scan_delay_us	= 10,
-	.debounce_ms		= 10,
-	.wakeup			= 1,
-	.active_low		= 1,
-};
-
-static struct platform_device qi_lb60_keypad = {
-	.name		= "matrix-keypad",
-	.id		= -1,
-	.dev		= {
-		.platform_data = &qi_lb60_pdata,
-	},
-};
-
-/* Display */
-static struct fb_videomode qi_lb60_video_modes[] = {
-	{
-		.name = "320x240",
-		.xres = 320,
-		.yres = 240,
-		.refresh = 30,
-		.left_margin = 140,
-		.right_margin = 273,
-		.upper_margin = 20,
-		.lower_margin = 2,
-		.hsync_len = 1,
-		.vsync_len = 1,
-		.sync = 0,
-		.vmode = FB_VMODE_NONINTERLACED,
-	},
-};
-
-static struct jz4740_fb_platform_data qi_lb60_fb_pdata = {
-	.width		= 60,
-	.height		= 45,
-	.num_modes	= ARRAY_SIZE(qi_lb60_video_modes),
-	.modes		= qi_lb60_video_modes,
-	.bpp		= 24,
-	.lcd_type	= JZ_LCD_TYPE_8BIT_SERIAL,
-	.pixclk_falling_edge = 1,
-};
-
-struct spi_gpio_platform_data qi_lb60_spigpio_platform_data = {
-	.num_chipselect = 1,
-};
-
-static struct platform_device qi_lb60_spigpio_device = {
-	.name = "spi_gpio",
-	.id   = 1,
-	.dev = {
-		.platform_data = &qi_lb60_spigpio_platform_data,
-	},
-};
-
-static struct gpiod_lookup_table qi_lb60_spigpio_gpio_table = {
-	.dev_id         = "spi_gpio",
-	.table          = {
-		GPIO_LOOKUP("GPIOC", 23,
-			    "sck", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("GPIOC", 22,
-			    "mosi", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("GPIOC", 21,
-			    "cs", GPIO_ACTIVE_HIGH),
-		{ },
-	},
-};
-
-static struct spi_board_info qi_lb60_spi_board_info[] = {
-	{
-		.modalias = "ili8960",
-		.chip_select = 0,
-		.bus_num = 1,
-		.max_speed_hz = 30 * 1000,
-		.mode = SPI_3WIRE,
-	},
-};
-
-/* Battery */
-static struct jz_battery_platform_data qi_lb60_battery_pdata = {
-	.gpio_charge =	JZ_GPIO_PORTC(27),
-	.gpio_charge_active_low = 1,
-	.info = {
-		.name = "battery",
-		.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
-		.voltage_max_design = 4200000,
-		.voltage_min_design = 3600000,
-	},
-};
-
-/* GPIO Key: power */
-static struct gpio_keys_button qi_lb60_gpio_keys_buttons[] = {
-	[0] = {
-		.code		= KEY_POWER,
-		.gpio		= JZ_GPIO_PORTD(29),
-		.active_low	= 1,
-		.desc		= "Power",
-		.wakeup		= 1,
-	},
-};
-
-static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
-	.nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
-	.buttons = qi_lb60_gpio_keys_buttons,
-};
-
-static struct platform_device qi_lb60_gpio_keys = {
-	.name = "gpio-keys",
-	.id =	-1,
-	.dev = {
-		.platform_data = &qi_lb60_gpio_keys_data,
-	}
-};
-
-static struct jz4740_mmc_platform_data qi_lb60_mmc_pdata = {
-	/* Intentionally left blank */
-};
-
-static struct gpiod_lookup_table qi_lb60_mmc_gpio_table = {
-	.dev_id = "jz4740-mmc.0",
-	.table = {
-		GPIO_LOOKUP("GPIOD", 0, "cd", GPIO_ACTIVE_HIGH),
-		GPIO_LOOKUP("GPIOD", 2, "power", GPIO_ACTIVE_LOW),
-		{ },
-	},
-};
-
-/* beeper */
-static struct pwm_lookup qi_lb60_pwm_lookup[] = {
-	PWM_LOOKUP("jz4740-pwm", 4, "pwm-beeper", NULL, 0,
-		   PWM_POLARITY_NORMAL),
-};
-
-static struct platform_device qi_lb60_pwm_beeper = {
-	.name = "pwm-beeper",
-	.id = -1,
-};
-
-/* charger */
-static char *qi_lb60_batteries[] = {
-	"battery",
-};
-
-static struct gpio_charger_platform_data qi_lb60_charger_pdata = {
-	.name = "usb",
-	.type = POWER_SUPPLY_TYPE_USB,
-	.gpio = JZ_GPIO_PORTD(28),
-	.gpio_active_low = 1,
-	.supplied_to = qi_lb60_batteries,
-	.num_supplicants = ARRAY_SIZE(qi_lb60_batteries),
-};
-
-static struct platform_device qi_lb60_charger_device = {
-	.name = "gpio-charger",
-	.dev = {
-		.platform_data = &qi_lb60_charger_pdata,
-	},
-};
-
-/* audio */
-static struct platform_device qi_lb60_audio_device = {
-	.name = "qi-lb60-audio",
-	.id = -1,
-};
-
-static struct gpiod_lookup_table qi_lb60_audio_gpio_table = {
-	.dev_id = "qi-lb60-audio",
-	.table = {
-		GPIO_LOOKUP("GPIOB", 29, "snd", 0),
-		GPIO_LOOKUP("GPIOD", 4, "amp", 0),
-		{ },
-	},
-};
-
-static struct platform_device *jz_platform_devices[] __initdata = {
-	&jz4740_udc_device,
-	&jz4740_udc_xceiv_device,
-	&jz4740_mmc_device,
-	&jz4740_nand_device,
-	&qi_lb60_keypad,
-	&qi_lb60_spigpio_device,
-	&jz4740_framebuffer_device,
-	&jz4740_pcm_device,
-	&jz4740_i2s_device,
-	&jz4740_codec_device,
-	&jz4740_adc_device,
-	&jz4740_pwm_device,
-	&jz4740_dma_device,
-	&qi_lb60_gpio_keys,
-	&qi_lb60_pwm_beeper,
-	&qi_lb60_charger_device,
-	&qi_lb60_audio_device,
-};
-
-static unsigned long pin_cfg_bias_disable[] = {
-	    PIN_CONFIG_BIAS_DISABLE,
-};
-
-static struct pinctrl_map pin_map[] __initdata = {
-	/* NAND pin configuration */
-	PIN_MAP_MUX_GROUP_DEFAULT("jz4740-nand",
-			"10010000.pin-controller", "nand-cs1", "nand"),
-
-	/* fbdev pin configuration */
-	PIN_MAP_MUX_GROUP("jz4740-fb", PINCTRL_STATE_DEFAULT,
-			"10010000.pin-controller", "lcd-8bit", "lcd"),
-	PIN_MAP_MUX_GROUP("jz4740-fb", PINCTRL_STATE_SLEEP,
-			"10010000.pin-controller", "lcd-no-pins", "lcd"),
-
-	/* MMC pin configuration */
-	PIN_MAP_MUX_GROUP_DEFAULT("jz4740-mmc.0",
-			"10010000.pin-controller", "mmc-1bit", "mmc"),
-	PIN_MAP_MUX_GROUP_DEFAULT("jz4740-mmc.0",
-			"10010000.pin-controller", "mmc-4bit", "mmc"),
-	PIN_MAP_CONFIGS_PIN_DEFAULT("jz4740-mmc.0",
-			"10010000.pin-controller", "PD0", pin_cfg_bias_disable),
-	PIN_MAP_CONFIGS_PIN_DEFAULT("jz4740-mmc.0",
-			"10010000.pin-controller", "PD2", pin_cfg_bias_disable),
-
-	/* PWM pin configuration */
-	PIN_MAP_MUX_GROUP_DEFAULT("jz4740-pwm",
-			"10010000.pin-controller", "pwm4", "pwm4"),
-};
-
-
-static int __init qi_lb60_init_platform_devices(void)
-{
-	jz4740_framebuffer_device.dev.platform_data = &qi_lb60_fb_pdata;
-	jz4740_nand_device.dev.platform_data = &qi_lb60_nand_pdata;
-	jz4740_adc_device.dev.platform_data = &qi_lb60_battery_pdata;
-	jz4740_mmc_device.dev.platform_data = &qi_lb60_mmc_pdata;
-
-	gpiod_add_lookup_table(&qi_lb60_audio_gpio_table);
-	gpiod_add_lookup_table(&qi_lb60_nand_gpio_table);
-	gpiod_add_lookup_table(&qi_lb60_spigpio_gpio_table);
-	gpiod_add_lookup_table(&qi_lb60_mmc_gpio_table);
-
-	spi_register_board_info(qi_lb60_spi_board_info,
-				ARRAY_SIZE(qi_lb60_spi_board_info));
-
-	pwm_add_table(qi_lb60_pwm_lookup, ARRAY_SIZE(qi_lb60_pwm_lookup));
-	pinctrl_register_mappings(pin_map, ARRAY_SIZE(pin_map));
-
-	return platform_add_devices(jz_platform_devices,
-					ARRAY_SIZE(jz_platform_devices));
-
-}
-
-static int __init qi_lb60_board_setup(void)
-{
-	printk(KERN_INFO "Qi Hardware JZ4740 QI LB60 setup\n");
-
-	if (qi_lb60_init_platform_devices())
-		panic("Failed to initialize platform devices");
-
-	return 0;
-}
-arch_initcall(qi_lb60_board_setup);

arch/mips/jz4740/platform.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2009-2010, Lars-Peter Clausen <[e-mail]>
- *  JZ4740 platform devices
- */
-
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/resource.h>
-
-#include <linux/dma-mapping.h>
-
-#include <linux/usb/musb.h>
-
-#include <asm/mach-jz4740/platform.h>
-#include <asm/mach-jz4740/base.h>
-#include <asm/mach-jz4740/irq.h>
-
-#include <linux/serial_core.h>
-#include <linux/serial_8250.h>
-
-/* USB Device Controller */
-struct platform_device jz4740_udc_xceiv_device = {
-	.name = "usb_phy_generic",
-	.id   = 0,
-};
-
-static struct resource jz4740_udc_resources[] = {
-	[0] = {
-		.start = JZ4740_UDC_BASE_ADDR,
-		.end   = JZ4740_UDC_BASE_ADDR + 0x10000 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start = JZ4740_IRQ_UDC,
-		.end   = JZ4740_IRQ_UDC,
-		.flags = IORESOURCE_IRQ,
-		.name  = "mc",
-	},
-};
-
-struct platform_device jz4740_udc_device = {
-	.name = "musb-jz4740",
-	.id   = -1,
-	.dev  = {
-		.dma_mask          = &jz4740_udc_device.dev.coherent_dma_mask,
-		.coherent_dma_mask = DMA_BIT_MASK(32),
-	},
-	.num_resources = ARRAY_SIZE(jz4740_udc_resources),
-	.resource      = jz4740_udc_resources,
-};
-
-/* MMC/SD controller */
-static struct resource jz4740_mmc_resources[] = {
-	{
-		.start	= JZ4740_MSC_BASE_ADDR,
-		.end	= JZ4740_MSC_BASE_ADDR + 0x1000 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.start	= JZ4740_IRQ_MSC,
-		.end	= JZ4740_IRQ_MSC,
-		.flags	= IORESOURCE_IRQ,
-	}
-};
-
-struct platform_device jz4740_mmc_device = {
-	.name		= "jz4740-mmc",
-	.id		= 0,
-	.dev = {
-		.dma_mask = &jz4740_mmc_device.dev.coherent_dma_mask,
-		.coherent_dma_mask = DMA_BIT_MASK(32),
-	},
-	.num_resources	= ARRAY_SIZE(jz4740_mmc_resources),
-	.resource	= jz4740_mmc_resources,
-};
-
-/* I2C controller */
-static struct resource jz4740_i2c_resources[] = {
-	{
-		.start	= JZ4740_I2C_BASE_ADDR,
-		.end	= JZ4740_I2C_BASE_ADDR + 0x1000 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.start	= JZ4740_IRQ_I2C,
-		.end	= JZ4740_IRQ_I2C,
-		.flags	= IORESOURCE_IRQ,
-	}
-};
-
-struct platform_device jz4740_i2c_device = {
-	.name		= "jz4740-i2c",
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(jz4740_i2c_resources),
-	.resource	= jz4740_i2c_resources,
-};
-
-/* NAND controller */
-static struct resource jz4740_nand_resources[] = {
-	{
-		.name	= "mmio",
-		.start	= JZ4740_EMC_BASE_ADDR,
-		.end	= JZ4740_EMC_BASE_ADDR + 0x1000 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.name	= "bank1",
-		.start	= 0x18000000,
-		.end	= 0x180C0000 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.name	= "bank2",
-		.start	= 0x14000000,
-		.end	= 0x140C0000 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.name	= "bank3",
-		.start	= 0x0C000000,
-		.end	= 0x0C0C0000 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-	{
-		.name	= "bank4",
-		.start	= 0x08000000,
-		.end	= 0x080C0000 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-};
-
-struct platform_device jz4740_nand_device = {
-	.name = "jz4740-nand",
-	.num_resources = ARRAY_SIZE(jz4740_nand_resources),
-	.resource = jz4740_nand_resources,
-};
-
-/* LCD controller */
-static struct resource jz4740_framebuffer_resources[] = {
-	{
-		.start	= JZ4740_LCD_BASE_ADDR,
-		.end	= JZ4740_LCD_BASE_ADDR + 0x1000 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-struct platform_device jz4740_framebuffer_device = {
-	.name		= "jz4740-fb",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(jz4740_framebuffer_resources),
-	.resource	= jz4740_framebuffer_resources,
-	.dev = {
-		.dma_mask = &jz4740_framebuffer_device.dev.coherent_dma_mask,
-		.coherent_dma_mask = DMA_BIT_MASK(32),
-	},
-};
-
-/* I2S controller */
-static struct resource jz4740_i2s_resources[] = {
-	{
-		.start	= JZ4740_AIC_BASE_ADDR,
-		.end	= JZ4740_AIC_BASE_ADDR + 0x38 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-struct platform_device jz4740_i2s_device = {
-	.name		= "jz4740-i2s",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(jz4740_i2s_resources),
-	.resource	= jz4740_i2s_resources,
-};
-
-/* PCM */
-struct platform_device jz4740_pcm_device = {
-	.name		= "jz4740-pcm-audio",
-	.id		= -1,
-};
-
-/* Codec */
-static struct resource jz4740_codec_resources[] = {
-	{
-		.start	= JZ4740_AIC_BASE_ADDR + 0x80,
-		.end	= JZ4740_AIC_BASE_ADDR + 0x88 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-};
-
-struct platform_device jz4740_codec_device = {
-	.name		= "jz4740-codec",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(jz4740_codec_resources),
-	.resource	= jz4740_codec_resources,
-};
-
-/* ADC controller */
-static struct resource jz4740_adc_resources[] = {
-	{
-		.start	= JZ4740_SADC_BASE_ADDR,
-		.end	= JZ4740_SADC_BASE_ADDR + 0x30,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.start	= JZ4740_IRQ_SADC,
-		.end	= JZ4740_IRQ_SADC,
-		.flags	= IORESOURCE_IRQ,
-	},
-	{
-		.start	= JZ4740_IRQ_ADC_BASE,
-		.end	= JZ4740_IRQ_ADC_BASE,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-struct platform_device jz4740_adc_device = {
-	.name		= "jz4740-adc",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(jz4740_adc_resources),
-	.resource	= jz4740_adc_resources,
-};
-
-/* PWM */
-struct platform_device jz4740_pwm_device = {
-	.name = "jz4740-pwm",
-	.id   = -1,
-};
-
-/* DMA */
-static struct resource jz4740_dma_resources[] = {
-	{
-		.start	= JZ4740_DMAC_BASE_ADDR,
-		.end	= JZ4740_DMAC_BASE_ADDR + 0x400 - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	{
-		.start	= JZ4740_IRQ_DMAC,
-		.end	= JZ4740_IRQ_DMAC,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-struct platform_device jz4740_dma_device = {
-	.name		= "jz4740-dma",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(jz4740_dma_resources),
-	.resource	= jz4740_dma_resources,
-};

arch/mips/jz4740/prom.c

···
  *  JZ4740 SoC prom code
  */
 
-#include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/string.h>
-
-#include <linux/serial_reg.h>
 
 #include <asm/bootinfo.h>
 #include <asm/fw/fw.h>
-#include <asm/mach-jz4740/base.h>
 
 void __init prom_init(void)
 {

arch/mips/jz4740/setup.c

···
 #include <asm/bootinfo.h>
 #include <asm/prom.h>
 
-#include <asm/mach-jz4740/base.h>
-
 #include "reset.h"
 
+#define JZ4740_EMC_BASE_ADDR 0x13010000
 
 #define JZ4740_EMC_SDRAM_CTRL 0x80
 
···
 
 static unsigned long __init get_board_mach_type(const void *fdt)
 {
+	if (!fdt_node_check_compatible(fdt, 0, "ingenic,x1000"))
+		return MACH_INGENIC_X1000;
 	if (!fdt_node_check_compatible(fdt, 0, "ingenic,jz4780"))
 		return MACH_INGENIC_JZ4780;
 	if (!fdt_node_check_compatible(fdt, 0, "ingenic,jz4770"))
···
 const char *get_system_type(void)
 {
 	switch (mips_machtype) {
+	case MACH_INGENIC_X1000:
+		return "X1000";
 	case MACH_INGENIC_JZ4780:
 		return "JZ4780";
 	case MACH_INGENIC_JZ4770:

arch/mips/jz4740/time.c

···
  *  JZ4740 platform time support
  */
 
-#include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
+#include <linux/clocksource.h>
 
-#include <linux/clockchips.h>
-#include <linux/sched_clock.h>
-
-#include <asm/mach-jz4740/irq.h>
 #include <asm/mach-jz4740/timer.h>
-#include <asm/time.h>
-
-#define TIMER_CLOCKEVENT 0
-#define TIMER_CLOCKSOURCE 1
-
-static uint16_t jz4740_jiffies_per_tick;
-
-static u64 jz4740_clocksource_read(struct clocksource *cs)
-{
-	return jz4740_timer_get_count(TIMER_CLOCKSOURCE);
-}
-
-static struct clocksource jz4740_clocksource = {
-	.name = "jz4740-timer",
-	.rating = 200,
-	.read = jz4740_clocksource_read,
-	.mask = CLOCKSOURCE_MASK(16),
-	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static u64 notrace jz4740_read_sched_clock(void)
-{
-	return jz4740_timer_get_count(TIMER_CLOCKSOURCE);
-}
-
-static irqreturn_t jz4740_clockevent_irq(int irq, void *devid)
-{
-	struct clock_event_device *cd = devid;
-
-	jz4740_timer_ack_full(TIMER_CLOCKEVENT);
-
-	if (!clockevent_state_periodic(cd))
-		jz4740_timer_disable(TIMER_CLOCKEVENT);
-
-	cd->event_handler(cd);
-
-	return IRQ_HANDLED;
-}
-
-static int jz4740_clockevent_set_periodic(struct clock_event_device *evt)
-{
-	jz4740_timer_set_count(TIMER_CLOCKEVENT, 0);
-	jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick);
-	jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
-	jz4740_timer_enable(TIMER_CLOCKEVENT);
-
-	return 0;
-}
-
-static int jz4740_clockevent_resume(struct clock_event_device *evt)
-{
-	jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
-	jz4740_timer_enable(TIMER_CLOCKEVENT);
-
-	return 0;
-}
-
-static int jz4740_clockevent_shutdown(struct clock_event_device *evt)
-{
-	jz4740_timer_disable(TIMER_CLOCKEVENT);
-
-	return 0;
-}
-
-static int jz4740_clockevent_set_next(unsigned long evt,
-	struct clock_event_device *cd)
-{
-	jz4740_timer_set_count(TIMER_CLOCKEVENT, 0);
-	jz4740_timer_set_period(TIMER_CLOCKEVENT, evt);
-	jz4740_timer_enable(TIMER_CLOCKEVENT);
-
-	return 0;
-}
-
-static struct clock_event_device jz4740_clockevent = {
-	.name = "jz4740-timer",
-	.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-	.set_next_event = jz4740_clockevent_set_next,
-	.set_state_shutdown = jz4740_clockevent_shutdown,
-	.set_state_periodic = jz4740_clockevent_set_periodic,
-	.set_state_oneshot = jz4740_clockevent_shutdown,
-	.tick_resume = jz4740_clockevent_resume,
-	.rating = 200,
-#ifdef CONFIG_MACH_JZ4740
-	.irq = JZ4740_IRQ_TCU0,
-#endif
-#if defined(CONFIG_MACH_JZ4770) || defined(CONFIG_MACH_JZ4780)
-	.irq = JZ4780_IRQ_TCU2,
-#endif
-};
-
-static struct irqaction timer_irqaction = {
-	.handler	= jz4740_clockevent_irq,
-	.flags		= IRQF_PERCPU | IRQF_TIMER,
-	.name		= "jz4740-timerirq",
-	.dev_id		= &jz4740_clockevent,
-};
 
 void __init plat_time_init(void)
 {
-	int ret;
-	uint32_t clk_rate;
-	uint16_t ctrl;
-	struct clk *ext_clk;
-
 	of_clk_init(NULL);
 	jz4740_timer_init();
-
-	ext_clk = clk_get(NULL, "ext");
-	if (IS_ERR(ext_clk))
-		panic("unable to get ext clock");
-	clk_rate = clk_get_rate(ext_clk) >> 4;
-	clk_put(ext_clk);
-
-	jz4740_jiffies_per_tick = DIV_ROUND_CLOSEST(clk_rate, HZ);
-
-	clockevent_set_clock(&jz4740_clockevent, clk_rate);
-	jz4740_clockevent.min_delta_ns = clockevent_delta2ns(100, &jz4740_clockevent);
-	jz4740_clockevent.min_delta_ticks = 100;
-	jz4740_clockevent.max_delta_ns = clockevent_delta2ns(0xffff, &jz4740_clockevent);
-	jz4740_clockevent.max_delta_ticks = 0xffff;
-	jz4740_clockevent.cpumask = cpumask_of(0);
-
-	clockevents_register_device(&jz4740_clockevent);
-
-	ret = clocksource_register_hz(&jz4740_clocksource, clk_rate);
-
-	if (ret)
-		printk(KERN_ERR "Failed to register clocksource: %d\n", ret);
-
-	sched_clock_register(jz4740_read_sched_clock, 16, clk_rate);
-
-	setup_irq(jz4740_clockevent.irq, &timer_irqaction);
-
-	ctrl = JZ_TIMER_CTRL_PRESCALE_16 | JZ_TIMER_CTRL_SRC_EXT;
-
-	jz4740_timer_set_ctrl(TIMER_CLOCKEVENT, ctrl);
-	jz4740_timer_set_ctrl(TIMER_CLOCKSOURCE, ctrl);
-
-	jz4740_timer_set_period(TIMER_CLOCKEVENT, jz4740_jiffies_per_tick);
-	jz4740_timer_irq_full_enable(TIMER_CLOCKEVENT);
-
-	jz4740_timer_set_period(TIMER_CLOCKSOURCE, 0xffff);
-
-	jz4740_timer_enable(TIMER_CLOCKEVENT);
-	jz4740_timer_enable(TIMER_CLOCKSOURCE);
+	timer_probe();
 }

arch/mips/kernel/branch.c

···
 		       unsigned long *contpc)
 {
 	union mips_instruction insn = (union mips_instruction)dec_insn.insn;
+	int __maybe_unused bc_false = 0;
 
 	if (!cpu_has_mmips)
 		return 0;
···
 #ifdef CONFIG_MIPS_FP_SUPPORT
 		case mm_bc2f_op:
 		case mm_bc1f_op: {
-			int bc_false = 0;
 			unsigned int fcr31;
 			unsigned int bit;
 

arch/mips/kernel/cpu-probe.c

···
 			break;
 		}
 		break;
-	case PRID_IMP_R4300:
-		c->cputype = CPU_R4300;
-		__cpu_name[cpu] = "R4300";
-		set_isa(c, MIPS_CPU_ISA_III);
-		c->fpu_msk31 |= FPU_CSR_CONDX;
-		c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_LLSC;
-		c->tlbsize = 32;
-		break;
 	case PRID_IMP_R4600:
 		c->cputype = CPU_R4600;
 		__cpu_name[cpu] = "R4600";
···
 			     MIPS_CPU_LLSC;
 		c->tlbsize = 48;
 		break;
-	case PRID_IMP_R5432:
-		c->cputype = CPU_R5432;
-		__cpu_name[cpu] = "R5432";
-		set_isa(c, MIPS_CPU_ISA_IV);
-		c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_WATCH | MIPS_CPU_LLSC;
-		c->tlbsize = 48;
-		break;
 	case PRID_IMP_R5500:
 		c->cputype = CPU_R5500;
 		__cpu_name[cpu] = "R5500";
···
 		 *	   0 =>	   48 entry JTLB
 		 */
 		c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48;
-		break;
-	case PRID_IMP_R8000:
-		c->cputype = CPU_R8000;
-		__cpu_name[cpu] = "RM8000";
-		set_isa(c, MIPS_CPU_ISA_IV);
-		c->options = MIPS_CPU_TLB | MIPS_CPU_4KEX |
-			     MIPS_CPU_FPU | MIPS_CPU_32FPR |
-			     MIPS_CPU_LLSC;
-		c->tlbsize = 384;      /* has weird TLB: 3-way x 128 */
 		break;
 	case PRID_IMP_R10000:
 		c->cputype = CPU_R10000;
···
 			__cpu_name[cpu] = "ICT Loongson-3";
 			set_elf_platform(cpu, "loongson3a");
 			set_isa(c, MIPS_CPU_ISA_M64R1);
+			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+				MIPS_ASE_LOONGSON_EXT);
 			break;
 		case PRID_REV_LOONGSON3B_R1:
 		case PRID_REV_LOONGSON3B_R2:
···
 			__cpu_name[cpu] = "ICT Loongson-3";
 			set_elf_platform(cpu, "loongson3b");
 			set_isa(c, MIPS_CPU_ISA_M64R1);
+			c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+				MIPS_ASE_LOONGSON_EXT);
 			break;
 		}
 
···
 		decode_configs(c);
 		c->options |= MIPS_CPU_FTLB | MIPS_CPU_TLBINV | MIPS_CPU_LDPTE;
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
+		c->ases |= (MIPS_ASE_LOONGSON_MMI | MIPS_ASE_LOONGSON_CAM |
+			MIPS_ASE_LOONGSON_EXT | MIPS_ASE_LOONGSON_EXT2);
 		break;
 	default:
 		panic("Unknown Loongson Processor ID!");
···
 static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
 {
 	decode_configs(c);
-	/* JZRISC does not implement the CP0 counter. */
+
+	/*
+	 * XBurst misses a config2 register, so config3 decode was skipped in
+	 * decode_configs().
+	 */
+	decode_config3(c);
+
+	/* XBurst does not implement the CP0 counter. */
 	c->options &= ~MIPS_CPU_COUNTER;
 	BUG_ON(!__builtin_constant_p(cpu_has_counter) || cpu_has_counter);
+
 	switch (c->processor_id & PRID_IMP_MASK) {
-	case PRID_IMP_JZRISC:
-		c->cputype = CPU_JZRISC;
+	case PRID_IMP_XBURST:
+		c->cputype = CPU_XBURST;
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
 		__cpu_name[cpu] = "Ingenic JZRISC";
+		/*
+		 * The XBurst core by default attempts to avoid branch target
+		 * buffer lookups by detecting & special casing loops. This
+		 * feature will cause BogoMIPS and lpj calculate in error.
+		 * Set cp0 config7 bit 4 to disable this feature.
+		 */
+		set_c0_config7(MIPS_CONF7_BTB_LOOP_EN);
 		break;
 	default:
 		panic("Unknown Ingenic Processor ID!");

arch/mips/kernel/genex.S

···
 NESTED(except_vec3_generic, 0, sp)
 	.set	push
 	.set	noat
-#if R5432_CP0_INTERRUPT_WAR
-	mfc0	k0, CP0_INDEX
-#endif
 	mfc0	k1, CP0_CAUSE
 	andi	k1, k1, 0x7c
 #ifdef CONFIG_64BIT

arch/mips/kernel/idle.c

···
 		cpu_wait = r39xx_wait;
 		break;
 	case CPU_R4200:
-/*	case CPU_R4300: */
 	case CPU_R4600:
 	case CPU_R4640:
 	case CPU_R4650:
···
 	case CPU_CAVIUM_OCTEON_PLUS:
 	case CPU_CAVIUM_OCTEON2:
 	case CPU_CAVIUM_OCTEON3:
-	case CPU_JZRISC:
+	case CPU_XBURST:
 	case CPU_LOONGSON1:
 	case CPU_XLR:
 	case CPU_XLP:

arch/mips/kernel/proc.c

···
 	if (cpu_has_eva)	seq_printf(m, "%s", " eva");
 	if (cpu_has_htw)	seq_printf(m, "%s", " htw");
 	if (cpu_has_xpa)	seq_printf(m, "%s", " xpa");
+	if (cpu_has_loongson_mmi)	seq_printf(m, "%s", " loongson-mmi");
+	if (cpu_has_loongson_cam)	seq_printf(m, "%s", " loongson-cam");
+	if (cpu_has_loongson_ext)	seq_printf(m, "%s", " loongson-ext");
+	if (cpu_has_loongson_ext2)	seq_printf(m, "%s", " loongson-ext2");
 	seq_printf(m, "\n");
 
 	if (cpu_has_mmips) {

arch/mips/kernel/scall32-o32.S

···
 #define sys_sched_getaffinity	mipsmt_sys_sched_getaffinity
 #endif /* CONFIG_MIPS_MT_FPAFF */
 
-#define __SYSCALL(nr, entry, nargs)	PTR entry
+#define __SYSCALL(nr, entry) 	PTR entry
 	.align	2
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)

arch/mips/kernel/scall64-n32.S

···
 
 	END(handle_sysn32)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.type	sysn32_call_table, @object
 EXPORT(sysn32_call_table)
 #include <asm/syscall_table_64_n32.h>

arch/mips/kernel/scall64-n64.S

···
 	j	n64_syscall_exit
 	END(handle_sys64)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.align	3
 	.type	sys_call_table, @object
 EXPORT(sys_call_table)

arch/mips/kernel/scall64-o32.S

···
 	jr	ra
 	END(sys32_syscall)
 
-#define __SYSCALL(nr, entry, nargs) PTR entry
+#define __SYSCALL(nr, entry)	PTR entry
 	.align	3
 	.type	sys32_call_table,@object
 EXPORT(sys32_call_table)

arch/mips/kernel/setup.c

···
 
 EXPORT_SYMBOL(mips_machtype);
 
-struct boot_mem_map boot_mem_map;
-
 static char __initdata command_line[COMMAND_LINE_SIZE];
 char __initdata arcs_cmdline[COMMAND_LINE_SIZE];
 
···
  * mips_io_port_base is the begin of the address space to which x86 style
  * I/O ports are mapped.
  */
-const unsigned long mips_io_port_base = -1;
+unsigned long mips_io_port_base = -1;
 EXPORT_SYMBOL(mips_io_port_base);
 
 static struct resource code_resource = { .name = "Kernel code", };
···
 
 void __init add_memory_region(phys_addr_t start, phys_addr_t size, long type)
 {
-	int x = boot_mem_map.nr_map;
-	int i;
+	/*
+	 * Note: This function only exists for historical reason,
+	 * new code should use memblock_add or memblock_add_node instead.
+	 */
 
 	/*
 	 * If the region reaches the top of the physical address space, adjust
···
 		return;
 	}
 
-	/*
-	 * Try to merge with existing entry, if any.
-	 */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		struct boot_mem_map_entry *entry = boot_mem_map.map + i;
-		unsigned long top;
+	memblock_add(start, size);
+	/* Reserve any memory except the ordinary RAM ranges. */
+	switch (type) {
+	case BOOT_MEM_RAM:
+		break;
 
-		if (entry->type != type)
-			continue;
+	case BOOT_MEM_NOMAP: /* Discard the range from the system. */
+		memblock_remove(start, size);
+		break;
 
-		if (start + size < entry->addr)
-			continue;			/* no overlap */
-
-		if (entry->addr + entry->size < start)
-			continue;			/* no overlap */
-
-		top = max(entry->addr + entry->size, start + size);
-		entry->addr = min(entry->addr, start);
-		entry->size = top - entry->addr;
-
-		return;
+	default: /* Reserve the rest of the memory types at boot time */
+		memblock_reserve(start, size);
+		break;
 	}
-
-	if (boot_mem_map.nr_map == BOOT_MEM_MAP_MAX) {
-		pr_err("Ooops! Too many entries in the memory map!\n");
-		return;
-	}
-
-	boot_mem_map.map[x].addr = start;
-	boot_mem_map.map[x].size = size;
-	boot_mem_map.map[x].type = type;
-	boot_mem_map.nr_map++;
 }
 
 void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max)
···
 		((unsigned long long) sz_max) / SZ_1M);
 
 	add_memory_region(start, size, BOOT_MEM_RAM);
-}
-
-static bool __init __maybe_unused memory_region_available(phys_addr_t start,
-							  phys_addr_t size)
-{
-	int i;
-	bool in_ram = false, free = true;
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		phys_addr_t start_, end_;
-
-		start_ = boot_mem_map.map[i].addr;
-		end_ = boot_mem_map.map[i].addr + boot_mem_map.map[i].size;
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			if (start >= start_ && start + size <= end_)
-				in_ram = true;
-			break;
-		case BOOT_MEM_RESERVED:
-		case BOOT_MEM_NOMAP:
-			if ((start >= start_ && start < end_) ||
-			    (start < start_ && start + size >= start_))
-				free = false;
-			break;
-		default:
-			continue;
-		}
-	}
-
-	return in_ram && free;
-}
-
-static void __init print_memory_map(void)
-{
-	int i;
-	const int field = 2 * sizeof(unsigned long);
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		printk(KERN_INFO " memory: %0*Lx @ %0*Lx ",
-		       field, (unsigned long long) boot_mem_map.map[i].size,
-		       field, (unsigned long long) boot_mem_map.map[i].addr);
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			printk(KERN_CONT "(usable)\n");
-			break;
-		case BOOT_MEM_INIT_RAM:
-			printk(KERN_CONT "(usable after init)\n");
-			break;
-		case BOOT_MEM_ROM_DATA:
-			printk(KERN_CONT "(ROM data)\n");
-			break;
-		case BOOT_MEM_RESERVED:
-			printk(KERN_CONT "(reserved)\n");
-			break;
-		case BOOT_MEM_NOMAP:
-			printk(KERN_CONT "(nomap)\n");
-			break;
-		default:
-			printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type);
-			break;
-		}
-	}
 }
 
 /*
···
 
 static void __init bootmem_init(void)
 {
-	phys_addr_t ramstart = PHYS_ADDR_MAX;
-	int i;
+	struct memblock_region *mem;
+	phys_addr_t ramstart, ramend;
+
+	ramstart = memblock_start_of_DRAM();
+	ramend = memblock_end_of_DRAM();
 
 	/*
 	 * Sanity check any INITRD first. We don't take it into account
···
 	memblock_reserve(__pa_symbol(&_text),
 			__pa_symbol(&_end) - __pa_symbol(&_text));
 
-	/*
-	 * max_low_pfn is not a number of pages. The number of pages
-	 * of the system is given by 'max_low_pfn - min_low_pfn'.
-	 */
-	min_low_pfn = ~0UL;
-	max_low_pfn = 0;
-
-	/* Find the highest and lowest page frame numbers we have available. */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start, end;
-
-		if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
-			continue;
-
-		start = PFN_UP(boot_mem_map.map[i].addr);
-		end = PFN_DOWN(boot_mem_map.map[i].addr
-				+ boot_mem_map.map[i].size);
-
-		ramstart = min(ramstart, boot_mem_map.map[i].addr);
-
-#ifndef CONFIG_HIGHMEM
-		/*
-		 * Skip highmem here so we get an accurate max_low_pfn if low
-		 * memory stops short of high memory.
-		 * If the region overlaps HIGHMEM_START, end is clipped so
-		 * max_pfn excludes the highmem portion.
-		 */
-		if (start >= PFN_DOWN(HIGHMEM_START))
-			continue;
-		if (end > PFN_DOWN(HIGHMEM_START))
-			end = PFN_DOWN(HIGHMEM_START);
-#endif
-
-		if (end > max_low_pfn)
-			max_low_pfn = end;
-		if (start < min_low_pfn)
-			min_low_pfn = start;
-	}
-
-	if (min_low_pfn >= max_low_pfn)
-		panic("Incorrect memory mapping !!!");
+	/* max_low_pfn is not a number of pages but the end pfn of low mem */
 
 #ifdef CONFIG_MIPS_AUTO_PFN_OFFSET
 	ARCH_PFN_OFFSET = PFN_UP(ramstart);
···
 	/*
 	 * Reserve any memory between the start of RAM and PHYS_OFFSET
 	 */
-	if (ramstart > PHYS_OFFSET) {
-		add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET,
-				  BOOT_MEM_RESERVED);
-		memblock_reserve(PHYS_OFFSET, ramstart - PHYS_OFFSET);
-	}
+	if (ramstart > PHYS_OFFSET)
+		memblock_reserve(PHYS_OFFSET, PFN_UP(ramstart) - PHYS_OFFSET);
 
-	if (min_low_pfn > ARCH_PFN_OFFSET) {
+	if (PFN_UP(ramstart) > ARCH_PFN_OFFSET) {
 		pr_info("Wasting %lu bytes for tracking %lu unused pages\n",
-			(min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page),
-			min_low_pfn - ARCH_PFN_OFFSET);
-	} else if (ARCH_PFN_OFFSET - min_low_pfn > 0UL) {
-		pr_info("%lu free pages won't be used\n",
-			ARCH_PFN_OFFSET - min_low_pfn);
+			(unsigned long)((PFN_UP(ramstart) - ARCH_PFN_OFFSET) * sizeof(struct page)),
+			(unsigned long)(PFN_UP(ramstart) - ARCH_PFN_OFFSET));
 	}
+#endif
+
 	min_low_pfn = ARCH_PFN_OFFSET;
-#endif
-
-	/*
-	 * Determine low and high memory ranges
-	 */
-	max_pfn = max_low_pfn;
-	if (max_low_pfn > PFN_DOWN(HIGHMEM_START)) {
-#ifdef CONFIG_HIGHMEM
-		highstart_pfn = PFN_DOWN(HIGHMEM_START);
-		highend_pfn = max_low_pfn;
-#endif
-		max_low_pfn = PFN_DOWN(HIGHMEM_START);
-	}
-
-	/* Install all valid RAM ranges to the memblock memory region */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start, end;
-
-		start = PFN_UP(boot_mem_map.map[i].addr);
-		end = PFN_DOWN(boot_mem_map.map[i].addr
-				+ boot_mem_map.map[i].size);
-
-		if (start < min_low_pfn)
-			start = min_low_pfn;
-#ifndef CONFIG_HIGHMEM
-		/* Ignore highmem regions if highmem is unsupported */
-		if (end > max_low_pfn)
-			end = max_low_pfn;
-#endif
-		if (end <= start)
-			continue;
-
-		memblock_add_node(PFN_PHYS(start), PFN_PHYS(end - start), 0);
-
-		/* Reserve any memory except the ordinary RAM ranges. */
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-			break;
-		case BOOT_MEM_NOMAP: /* Discard the range from the system. */
-			memblock_remove(PFN_PHYS(start), PFN_PHYS(end - start));
-			continue;
-		default: /* Reserve the rest of the memory types at boot time */
-			memblock_reserve(PFN_PHYS(start), PFN_PHYS(end - start));
-			break;
-		}
+	max_pfn = PFN_DOWN(ramend);
+	for_each_memblock(memory, mem) {
+		unsigned long start = memblock_region_memory_base_pfn(mem);
+		unsigned long end = memblock_region_memory_end_pfn(mem);
 
 		/*
-		 * In any case the added to the memblock memory regions
-		 * (highmem/lowmem, available/reserved, etc) are considered
-		 * as present, so inform sparsemem about them.
+		 * Skip highmem here so we get an accurate max_low_pfn if low
+		 * memory stops short of high memory.
+		 * If the region overlaps HIGHMEM_START, end is clipped so
+		 * max_pfn excludes the highmem portion.
 		 */
-		memory_present(0, start, end);
+		if (memblock_is_nomap(mem))
+			continue;
+		if (start >= PFN_DOWN(HIGHMEM_START))
+			continue;
+		if (end > PFN_DOWN(HIGHMEM_START))
+			end = PFN_DOWN(HIGHMEM_START);
+		if (end > max_low_pfn)
+			max_low_pfn = end;
 	}
+
+	if (min_low_pfn >= max_low_pfn)
+		panic("Incorrect memory mapping !!!");
+
+	if (max_pfn > PFN_DOWN(HIGHMEM_START)) {
+#ifdef CONFIG_HIGHMEM
+		highstart_pfn = PFN_DOWN(HIGHMEM_START);
+		highend_pfn = max_pfn;
+#else
+		max_low_pfn = PFN_DOWN(HIGHMEM_START);
+		max_pfn = max_low_pfn;
+#endif
+	}
+
+
+	/*
+	 * In any case the added to the memblock memory regions
+	 * (highmem/lowmem, available/reserved, etc) are considered
+	 * as present, so inform sparsemem about them.
+	 */
+	memblocks_present();
 
 	/*
 	 * Reserve initrd memory if needed.
···
 	 * size.
 	 */
 	if (usermem == 0) {
-		boot_mem_map.nr_map = 0;
 		usermem = 1;
+		memblock_remove(memblock_start_of_DRAM(),
+			memblock_end_of_DRAM() - memblock_start_of_DRAM());
 	}
 	start = 0;
 	size = memparse(p, &p);
···
 unsigned long setup_elfcorehdr, setup_elfcorehdr_size;
 static int __init early_parse_elfcorehdr(char *p)
 {
-	int i;
+	struct memblock_region *mem;
 
 	setup_elfcorehdr = memparse(p, &p);
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long start = boot_mem_map.map[i].addr;
-		unsigned long end = (boot_mem_map.map[i].addr +
-				     boot_mem_map.map[i].size);
+	 for_each_memblock(memory, mem) {
+		unsigned long start = mem->base;
+		unsigned long end = start + mem->size;
 		if (setup_elfcorehdr >= start && setup_elfcorehdr < end) {
 			/*
 			 * Reserve from the elf core header to the end of
···
 early_param("elfcorehdr", early_parse_elfcorehdr);
 #endif
 
-static void __init arch_mem_addpart(phys_addr_t mem, phys_addr_t end, int type)
-{
-	phys_addr_t size;
-	int i;
-
-	size = end - mem;
-	if (!size)
-		return;
-
-	/* Make sure it is in the boot_mem_map */
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (mem >= boot_mem_map.map[i].addr &&
-		    mem < (boot_mem_map.map[i].addr +
-			   boot_mem_map.map[i].size))
-			return;
-	}
-	add_memory_region(mem, size, type);
-}
-
 #ifdef CONFIG_KEXEC
-static inline unsigned long long get_total_mem(void)
-{
-	unsigned long long total;
-
-	total = max_pfn - min_low_pfn;
-	return total << PAGE_SHIFT;
-}
-
 static void __init mips_parse_crashkernel(void)
 {
 	unsigned long long total_mem;
 	unsigned long long crash_size, crash_base;
 	int ret;
 
-	total_mem = get_total_mem();
+	total_mem = memblock_phys_mem_size();
 	ret = parse_crashkernel(boot_command_line, total_mem,
 				&crash_size, &crash_base);
 	if (ret != 0 || crash_size <= 0)
 		return;
 
-	if (!memory_region_available(crash_base, crash_size)) {
+	if (!memblock_find_in_range(crash_base, crash_base + crash_size, crash_size, 0)) {
 		pr_warn("Invalid memory region reserved for crash kernel\n");
 		return;
 	}
···
 {
 }
 #endif /* !defined(CONFIG_KEXEC)  */
+
+static void __init check_kernel_sections_mem(void)
+{
+	phys_addr_t start = PFN_PHYS(PFN_DOWN(__pa_symbol(&_text)));
+	phys_addr_t size = PFN_PHYS(PFN_UP(__pa_symbol(&_end))) - start;
+
+	if (!memblock_is_region_memory(start, size)) {
+		pr_info("Kernel sections are not in the memory maps\n");
+		memblock_add(start, size);
+	}
+}
 
 #define USE_PROM_CMDLINE	IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER)
 #define USE_DTB_CMDLINE		IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_DTB)
···
 	plat_mem_setup();
 	memblock_set_bottom_up(true);
 
-	/*
-	 * Make sure all kernel memory is in the maps.  The "UP" and
-	 * "DOWN" are opposite for initdata since if it crosses over
-	 * into another memory section you don't want that to be
-	 * freed when the initdata is freed.
-	 */
-	arch_mem_addpart(PFN_DOWN(__pa_symbol(&_text)) << PAGE_SHIFT,
-			 PFN_UP(__pa_symbol(&_edata)) << PAGE_SHIFT,
-			 BOOT_MEM_RAM);
-	arch_mem_addpart(PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT,
-			 PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT,
-			 BOOT_MEM_INIT_RAM);
-	arch_mem_addpart(PFN_DOWN(__pa_symbol(&__bss_start)) << PAGE_SHIFT,
-			 PFN_UP(__pa_symbol(&__bss_stop)) << PAGE_SHIFT,
-			 BOOT_MEM_RAM);
-
-	pr_info("Determined physical RAM map:\n");
-	print_memory_map();
-
 #if defined(CONFIG_CMDLINE_BOOL) && defined(CONFIG_CMDLINE_OVERRIDE)
 	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 #else
···
 
 	parse_early_param();
 
-	if (usermem) {
-		pr_info("User-defined physical RAM map:\n");
-		print_memory_map();
-	}
+	if (usermem)
+		pr_info("User-defined physical RAM map overwrite\n");
+
+	check_kernel_sections_mem();
 
 	early_init_fdt_reserve_self();
 	early_init_fdt_scan_reserved_mem();
 
+#ifndef CONFIG_NUMA
+	memblock_set_node(0, PHYS_ADDR_MAX, &memblock.memory, 0);
+#endif
 	bootmem_init();
 
 	/*
···
 
 	memblock_dump_all();
 
-	early_memtest(PFN_PHYS(min_low_pfn), PFN_PHYS(max_low_pfn));
+	early_memtest(PFN_PHYS(ARCH_PFN_OFFSET), PFN_PHYS(max_low_pfn));
 }
 
 static void __init resource_init(void)
 {
-	int i;
+	struct memblock_region *region;
 
 	if (UNCAC_BASE != IO_BASE)
 		return;
···
 	bss_resource.start = __pa_symbol(&__bss_start);
 	bss_resource.end = __pa_symbol(&__bss_stop) - 1;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
+	for_each_memblock(memory, region) {
+		phys_addr_t start = PFN_PHYS(memblock_region_memory_base_pfn(region));
+		phys_addr_t end = PFN_PHYS(memblock_region_memory_end_pfn(region)) - 1;
 		struct resource *res;
-		unsigned long start, end;
-
-		start = boot_mem_map.map[i].addr;
-		end = boot_mem_map.map[i].addr + boot_mem_map.map[i].size - 1;
-		if (start >= HIGHMEM_START)
-			continue;
-		if (end >= HIGHMEM_START)
-			end = HIGHMEM_START - 1;
 
 		res = memblock_alloc(sizeof(struct resource), SMP_CACHE_BYTES);
 		if (!res)
···
 
 		res->start = start;
 		res->end = end;
-		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-		case BOOT_MEM_INIT_RAM:
-		case BOOT_MEM_ROM_DATA:
-			res->name = "System RAM";
-			res->flags |= IORESOURCE_SYSRAM;
-			break;
-		case BOOT_MEM_RESERVED:
-		case BOOT_MEM_NOMAP:
-		default:
-			res->name = "reserved";
-		}
+		res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
+		res->name = "System RAM";
 
 		request_resource(&iomem_resource, res);
 

arch/mips/kernel/syscall.c

···
 		  [efault] "i" (-EFAULT)
 		: "memory");
 	} else if (cpu_has_llsc) {
+		loongson_llsc_mb();
 		__asm__ __volatile__ (
 		"	.set	push					\n"
 		"	.set	"MIPS_ISA_ARCH_LEVEL"			\n"

arch/mips/kernel/syscalls/syscalltbl.sh

···
 	t_entry="$3"
 
 	while [ $t_nxt -lt $t_nr ]; do
-		printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
+		printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}"
 		t_nxt=$((t_nxt+1))
 	done
-	printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
+	printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}"
 }
 
 grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (

arch/mips/kernel/vdso.c

···
 #include <asm/mips-cps.h>
 #include <asm/page.h>
 #include <asm/vdso.h>
+#include <vdso/helpers.h>
+#include <vdso/vsyscall.h>
 
 /* Kernel-provided data used by the VDSO. */
-static union mips_vdso_data vdso_data __page_aligned_data;
+static union mips_vdso_data mips_vdso_data __page_aligned_data;
+struct vdso_data *vdso_data = mips_vdso_data.data;
 
 /*
  * Mapping for the VDSO data/GIC pages. The real pages are mapped manually, as
···
 	return 0;
 }
 subsys_initcall(init_vdso);
-
-void update_vsyscall(struct timekeeper *tk)
-{
-	vdso_data_write_begin(&vdso_data);
-
-	vdso_data.xtime_sec = tk->xtime_sec;
-	vdso_data.xtime_nsec = tk->tkr_mono.xtime_nsec;
-	vdso_data.wall_to_mono_sec = tk->wall_to_monotonic.tv_sec;
-	vdso_data.wall_to_mono_nsec = tk->wall_to_monotonic.tv_nsec;
-	vdso_data.cs_shift = tk->tkr_mono.shift;
-
-	vdso_data.clock_mode = tk->tkr_mono.clock->archdata.vdso_clock_mode;
-	if (vdso_data.clock_mode != VDSO_CLOCK_NONE) {
-		vdso_data.cs_mult = tk->tkr_mono.mult;
-		vdso_data.cs_cycle_last = tk->tkr_mono.cycle_last;
-		vdso_data.cs_mask = tk->tkr_mono.mask;
-	}
-
-	vdso_data_write_end(&vdso_data);
-}
-
-void update_vsyscall_tz(void)
-{
-	if (vdso_data.clock_mode != VDSO_CLOCK_NONE) {
-		vdso_data.tz_minuteswest = sys_tz.tz_minuteswest;
-		vdso_data.tz_dsttime = sys_tz.tz_dsttime;
-	}
-}
 
 static unsigned long vdso_base(void)
 {
···
 	 */
 	if (cpu_has_dc_aliases) {
 		base = __ALIGN_MASK(base, shm_align_mask);
-		base += ((unsigned long)&vdso_data - gic_size) & shm_align_mask;
+		base += ((unsigned long)vdso_data - gic_size) & shm_align_mask;
 	}
 
 	data_addr = base + gic_size;
···
 
 	/* Map data page. */
 	ret = remap_pfn_range(vma, data_addr,
-			      virt_to_phys(&vdso_data) >> PAGE_SHIFT,
+			      virt_to_phys(vdso_data) >> PAGE_SHIFT,
 			      PAGE_SIZE, PAGE_READONLY);
 	if (ret)
 		goto out;

arch/mips/lantiq/xway/sysctrl.c

···
 		clkdev_add_pmu("1f203018.usb2-phy", "phy", 1, 2, PMU_ANALOG_USB0_P);
 		clkdev_add_pmu("1f203034.usb2-phy", "phy", 1, 2, PMU_ANALOG_USB1_P);
 		/* rc 0 */
-		clkdev_add_pmu("1d900000.pcie", "phy", 1, 2, PMU_ANALOG_PCIE0_P);
+		clkdev_add_pmu("1f106800.phy", "phy", 1, 2, PMU_ANALOG_PCIE0_P);
 		clkdev_add_pmu("1d900000.pcie", "msi", 1, 1, PMU1_PCIE_MSI);
-		clkdev_add_pmu("1d900000.pcie", "pdi", 1, 1, PMU1_PCIE_PDI);
+		clkdev_add_pmu("1f106800.phy", "pdi", 1, 1, PMU1_PCIE_PDI);
 		clkdev_add_pmu("1d900000.pcie", "ctl", 1, 1, PMU1_PCIE_CTL);
 		/* rc 1 */
-		clkdev_add_pmu("19000000.pcie", "phy", 1, 2, PMU_ANALOG_PCIE1_P);
+		clkdev_add_pmu("1f700400.phy", "phy", 1, 2, PMU_ANALOG_PCIE1_P);
 		clkdev_add_pmu("19000000.pcie", "msi", 1, 1, PMU1_PCIE1_MSI);
-		clkdev_add_pmu("19000000.pcie", "pdi", 1, 1, PMU1_PCIE1_PDI);
+		clkdev_add_pmu("1f700400.phy", "pdi", 1, 1, PMU1_PCIE1_PDI);
 		clkdev_add_pmu("19000000.pcie", "ctl", 1, 1, PMU1_PCIE1_CTL);
 	}
 
···
 		clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0);
 		clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1);
 		/* rc 2 */
-		clkdev_add_pmu("1a800000.pcie", "phy", 1, 2, PMU_ANALOG_PCIE2_P);
+		clkdev_add_pmu("1f106a00.pcie", "phy", 1, 2, PMU_ANALOG_PCIE2_P);
 		clkdev_add_pmu("1a800000.pcie", "msi", 1, 1, PMU1_PCIE2_MSI);
-		clkdev_add_pmu("1a800000.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI);
+		clkdev_add_pmu("1f106a00.pcie", "pdi", 1, 1, PMU1_PCIE2_PDI);
 		clkdev_add_pmu("1a800000.pcie", "ctl", 1, 1, PMU1_PCIE2_CTL);
 		clkdev_add_pmu("1e10b308.eth", NULL, 0, 0, PMU_SWITCH | PMU_PPE_DP);
 		clkdev_add_pmu("1da00000.usif", "NULL", 1, 0, PMU_USIF);
···
 		clkdev_add_pmu("1e101000.usb", "otg", 1, 0, PMU_USB0 | PMU_AHBM);
 		clkdev_add_pmu("1f203034.usb2-phy", "phy", 1, 0, PMU_USB1_P);
 		clkdev_add_pmu("1e106000.usb", "otg", 1, 0, PMU_USB1 | PMU_AHBM);
-		clkdev_add_pmu("1d900000.pcie", "phy", 1, 1, PMU1_PCIE_PHY);
+		clkdev_add_pmu("1f106800.phy", "phy", 1, 1, PMU1_PCIE_PHY);
 		clkdev_add_pmu("1d900000.pcie", "bus", 1, 0, PMU_PCIE_CLK);
 		clkdev_add_pmu("1d900000.pcie", "msi", 1, 1, PMU1_PCIE_MSI);
-		clkdev_add_pmu("1d900000.pcie", "pdi", 1, 1, PMU1_PCIE_PDI);
+		clkdev_add_pmu("1f106800.phy", "pdi", 1, 1, PMU1_PCIE_PDI);
 		clkdev_add_pmu("1d900000.pcie", "ctl", 1, 1, PMU1_PCIE_CTL);
 		clkdev_add_pmu(NULL, "ahb", 1, 0, PMU_AHBM | PMU_AHBS);
 

arch/mips/mm/Makefile

···
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_DMA_NONCOHERENT)	+= dma-noncoherent.o
 
+obj-$(CONFIG_CPU_R3K_TLB)	+= tlb-r3k.o
 obj-$(CONFIG_CPU_R4K_CACHE_TLB) += c-r4k.o cex-gen.o tlb-r4k.o
-obj-$(CONFIG_CPU_R3000)		+= c-r3k.o tlb-r3k.o
-obj-$(CONFIG_CPU_R8000)		+= c-r4k.o cex-gen.o tlb-r8k.o
+obj-$(CONFIG_CPU_R3000)		+= c-r3k.o
 obj-$(CONFIG_CPU_SB1)		+= c-r4k.o cerr-sb1.o cex-sb1.o tlb-r4k.o
-obj-$(CONFIG_CPU_TX39XX)	+= c-tx39.o tlb-r3k.o
+obj-$(CONFIG_CPU_TX39XX)	+= c-tx39.o
 obj-$(CONFIG_CPU_CAVIUM_OCTEON) += c-octeon.o cex-oct.o tlb-r4k.o
 
 obj-$(CONFIG_IP22_CPU_SCACHE)	+= sc-ip22.o

arch/mips/mm/c-r4k.c

···
 		c->options |= MIPS_CPU_CACHE_CDEX_P;
 		break;
 
-	case CPU_R5432:
 	case CPU_R5500:
 		icache_size = 1 << (12 + ((config & CONF_IC) >> 9));
 		c->icache.linesz = 16 << ((config & CONF_IB) >> 5);
···
 	case CPU_R4400PC:
 	case CPU_R4400SC:
 	case CPU_R4400MC:
-	case CPU_R4300:
 		icache_size = 1 << (12 + ((config & CONF_IC) >> 9));
 		c->icache.linesz = 16 << ((config & CONF_IB) >> 5);
 		c->icache.ways = 1;

arch/mips/mm/init.c

···
 #endif
 }
 
+struct maar_walk_info {
+	struct maar_config cfg[16];
+	unsigned int num_cfg;
+};
+
+static int maar_res_walk(unsigned long start_pfn, unsigned long nr_pages,
+			 void *data)
+{
+	struct maar_walk_info *wi = data;
+	struct maar_config *cfg = &wi->cfg[wi->num_cfg];
+	unsigned int maar_align;
+
+	/* MAAR registers hold physical addresses right shifted by 4 bits */
+	maar_align = BIT(MIPS_MAAR_ADDR_SHIFT + 4);
+
+	/* Fill in the MAAR config entry */
+	cfg->lower = ALIGN(PFN_PHYS(start_pfn), maar_align);
+	cfg->upper = ALIGN_DOWN(PFN_PHYS(start_pfn + nr_pages), maar_align) - 1;
+	cfg->attrs = MIPS_MAAR_S;
+
+	/* Ensure we don't overflow the cfg array */
+	if (!WARN_ON(wi->num_cfg >= ARRAY_SIZE(wi->cfg)))
+		wi->num_cfg++;
+
+	return 0;
+}
+
+
 unsigned __weak platform_maar_init(unsigned num_pairs)
 {
-	struct maar_config cfg[BOOT_MEM_MAP_MAX];
-	unsigned i, num_configured, num_cfg = 0;
+	unsigned int num_configured;
+	struct maar_walk_info wi;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-		case BOOT_MEM_INIT_RAM:
-			break;
-		default:
-			continue;
-		}
+	wi.num_cfg = 0;
+	walk_system_ram_range(0, max_pfn, &wi, maar_res_walk);
 
-		/* Round lower up */
-		cfg[num_cfg].lower = boot_mem_map.map[i].addr;
-		cfg[num_cfg].lower = (cfg[num_cfg].lower + 0xffff) & ~0xffff;
-
-		/* Round upper down */
-		cfg[num_cfg].upper = boot_mem_map.map[i].addr +
-					boot_mem_map.map[i].size;
-		cfg[num_cfg].upper = (cfg[num_cfg].upper & ~0xffff) - 1;
-
-		cfg[num_cfg].attrs = MIPS_MAAR_S;
-		num_cfg++;
-	}
-
-	num_configured = maar_config(cfg, num_cfg, num_pairs);
-	if (num_configured < num_cfg)
-		pr_warn("Not enough MAAR pairs (%u) for all bootmem regions (%u)\n",
-			num_pairs, num_cfg);
+	num_configured = maar_config(wi.cfg, wi.num_cfg, num_pairs);
+	if (num_configured < wi.num_cfg)
+		pr_warn("Not enough MAAR pairs (%u) for all memory regions (%u)\n",
+			num_pairs, wi.num_cfg);
 
 	return num_configured;
 }
···
 }
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES
-int page_is_ram(unsigned long pagenr)
-{
-	int i;
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long addr, end;
-
-		switch (boot_mem_map.map[i].type) {
-		case BOOT_MEM_RAM:
-		case BOOT_MEM_INIT_RAM:
-			break;
-		default:
-			/* not usable memory */
-			continue;
-		}
-
-		addr = PFN_UP(boot_mem_map.map[i].addr);
-		end = PFN_DOWN(boot_mem_map.map[i].addr +
-			       boot_mem_map.map[i].size);
-
-		if (pagenr >= addr && pagenr < end)
-			return 1;
-	}
-
-	return 0;
-}
-
 void __init paging_init(void)
 {
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
···
 static struct kcore_list kcore_kseg0;
 #endif
 
-static inline void mem_init_free_highmem(void)
+static inline void __init mem_init_free_highmem(void)
 {
 #ifdef CONFIG_HIGHMEM
 	unsigned long tmp;
···
 	for (tmp = highstart_pfn; tmp < highend_pfn; tmp++) {
 		struct page *page = pfn_to_page(tmp);
 
-		if (!page_is_ram(tmp))
+		if (!memblock_is_memory(PFN_PHYS(tmp)))
 			SetPageReserved(page);
 		else
 			free_highmem_page(page);
···
 
 void __init mem_init(void)
 {
+	/*
+	 * When _PFN_SHIFT is greater than PAGE_SHIFT we won't have enough PTE
+	 * bits to hold a full 32b physical address on MIPS32 systems.
+	 */
+	BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT));
+
 #ifdef CONFIG_HIGHMEM
 #ifdef CONFIG_DISCONTIGMEM
 #error "CONFIG_HIGHMEM and CONFIG_DISCONTIGMEM dont work together yet"

arch/mips/mm/pgtable-32.c

···
 #include <asm/fixmap.h>
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
+#include <asm/tlbflush.h>
 
 void pgd_init(unsigned long page)
 {
···
 		p[i + 7] = (unsigned long) invalid_pte_table;
 	}
 }
+
+#if defined(CONFIG_TRANSPARENT_HUGEPAGE)
+pmd_t mk_pmd(struct page *page, pgprot_t prot)
+{
+	pmd_t pmd;
+
+	pmd_val(pmd) = (page_to_pfn(page) << _PFN_SHIFT) | pgprot_val(prot);
+
+	return pmd;
+}
+
+
+void set_pmd_at(struct mm_struct *mm, unsigned long addr,
+		pmd_t *pmdp, pmd_t pmd)
+{
+	*pmdp = pmd;
+	flush_tlb_all();
+}
+#endif /* defined(CONFIG_TRANSPARENT_HUGEPAGE) */
 
 void __init pagetable_init(void)
 {

arch/mips/mm/sc-mips.c

···
 	else
 		return 0;
 
-	/*
-	 * According to config2 it would be 5-ways, but that is contradicted
-	 * by all documentation.
-	 */
-	if (current_cpu_type() == CPU_JZRISC &&
-				mips_machtype == MACH_INGENIC_JZ4770)
-		c->scache.ways = 4;
+	if (current_cpu_type() == CPU_XBURST) {
+		switch (mips_machtype) {
+		/*
+		 * According to config2 it would be 5-ways, but that is
+		 * contradicted by all documentation.
+		 */
+		case MACH_INGENIC_JZ4770:
+			c->scache.ways = 4;
+			break;
+
+		/*
+		 * According to config2 it would be 5-ways and 512-sets,
+		 * but that is contradicted by all documentation.
+		 */
+		case MACH_INGENIC_X1000:
+			c->scache.sets = 256;
+			c->scache.ways = 4;
+			break;
+		}
+	}
 
 	c->scache.waysize = c->scache.sets * c->scache.linesz;
 	c->scache.waybit = __ffs(c->scache.waysize);

arch/mips/mm/tlb-r8k.c

···
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1996 David S. Miller ([e-mail])
- * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle [e-mail]
- * Carsten Langgaard, [e-mail]
- * Copyright (C) 2002 MIPS Technologies, Inc.  All rights reserved.
- */
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/mm.h>
-
-#include <asm/cpu.h>
-#include <asm/bootinfo.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-
-extern void build_tlb_refill_handler(void);
-
-#define TFP_TLB_SIZE		384
-#define TFP_TLB_SET_SHIFT	7
-
-/* CP0 hazard avoidance. */
-#define BARRIER __asm__ __volatile__(".set noreorder\n\t" \
-				     "nop; nop; nop; nop; nop; nop;\n\t" \
-				     ".set reorder\n\t")
-
-void local_flush_tlb_all(void)
-{
-	unsigned long flags;
-	unsigned long old_ctx;
-	int entry;
-
-	local_irq_save(flags);
-	/* Save old context and create impossible VPN2 value */
-	old_ctx = read_c0_entryhi();
-	write_c0_entrylo(0);
-
-	for (entry = 0; entry < TFP_TLB_SIZE; entry++) {
-		write_c0_tlbset(entry >> TFP_TLB_SET_SHIFT);
-		write_c0_vaddr(entry << PAGE_SHIFT);
-		write_c0_entryhi(CKSEG0 + (entry << (PAGE_SHIFT + 1)));
-		mtc0_tlbw_hazard();
-		tlb_write();
-	}
-	tlbw_use_hazard();
-	write_c0_entryhi(old_ctx);
-	local_irq_restore(flags);
-}
-
-void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
-	unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	int cpu = smp_processor_id();
-	unsigned long flags;
-	int oldpid, newpid, size;
-
-	if (!cpu_context(cpu, mm))
-		return;
-
-	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-	size = (size + 1) >> 1;
-
-	local_irq_save(flags);
-
-	if (size > TFP_TLB_SIZE / 2) {
-		drop_mmu_context(mm);
-		goto out_restore;
-	}
-
-	oldpid = read_c0_entryhi();
-	newpid = cpu_asid(cpu, mm);
-
-	write_c0_entrylo(0);
-
-	start &= PAGE_MASK;
-	end += (PAGE_SIZE - 1);
-	end &= PAGE_MASK;
-	while (start < end) {
-		signed long idx;
-
-		write_c0_vaddr(start);
-		write_c0_entryhi(start);
-		start += PAGE_SIZE;
-		tlb_probe();
-		idx = read_c0_tlbset();
-		if (idx < 0)
-			continue;
-
-		write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
-		tlb_write();
-	}
-	write_c0_entryhi(oldpid);
-
-out_restore:
-	local_irq_restore(flags);
-}
-
-/* Usable for KV1 addresses only! */
-void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
-{
-	unsigned long size, flags;
-
-	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-	size = (size + 1) >> 1;
-
-	if (size > TFP_TLB_SIZE / 2) {
-		local_flush_tlb_all();
-		return;
-	}
-
-	local_irq_save(flags);
-
-	write_c0_entrylo(0);
-
-	start &= PAGE_MASK;
-	end += (PAGE_SIZE - 1);
-	end &= PAGE_MASK;
-	while (start < end) {
-		signed long idx;
-
-		write_c0_vaddr(start);
-		write_c0_entryhi(start);
-		start += PAGE_SIZE;
-		tlb_probe();
-		idx = read_c0_tlbset();
-		if (idx < 0)
-			continue;
-
-		write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
-		tlb_write();
-	}
-
-	local_irq_restore(flags);
-}
-
-void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	int cpu = smp_processor_id();
-	unsigned long flags;
-	int oldpid, newpid;
-	signed long idx;
-
-	if (!cpu_context(cpu, vma->vm_mm))
-		return;
-
-	newpid = cpu_asid(cpu, vma->vm_mm);
-	page &= PAGE_MASK;
-	local_irq_save(flags);
-	oldpid = read_c0_entryhi();
-	write_c0_vaddr(page);
-	write_c0_entryhi(newpid);
-	tlb_probe();
-	idx = read_c0_tlbset();
-	if (idx < 0)
-		goto finish;
-
-	write_c0_entrylo(0);
-	write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
-	tlb_write();
-
-finish:
-	write_c0_entryhi(oldpid);
-	local_irq_restore(flags);
-}
-
-/*
- * We will need multiple versions of update_mmu_cache(), one that just
- * updates the TLB with the new pte(s), and another which also checks
- * for the R4k "end of page" hardware bug and does the needy.
- */
-void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte)
-{
-	unsigned long flags;
-	pgd_t *pgdp;
-	pmd_t *pmdp;
-	pte_t *ptep;
-	int pid;
-
-	/*
-	 * Handle debugger faulting in for debugee.
-	 */
-	if (current->active_mm != vma->vm_mm)
-		return;
-
-	pid = read_c0_entryhi() & cpu_asid_mask(&current_cpu_data);
-
-	local_irq_save(flags);
-	address &= PAGE_MASK;
-	write_c0_vaddr(address);
-	write_c0_entryhi(pid);
-	pgdp = pgd_offset(vma->vm_mm, address);
-	pmdp = pmd_offset(pgdp, address);
-	ptep = pte_offset_map(pmdp, address);
-	tlb_probe();
-
-	write_c0_entrylo(pte_val(*ptep++) >> 6);
-	tlb_write();
-
-	write_c0_entryhi(pid);
-	local_irq_restore(flags);
-}
-
-static void probe_tlb(unsigned long config)
-{
-	struct cpuinfo_mips *c = &current_cpu_data;
-
-	c->tlbsize = 3 * 128;		/* 3 sets each 128 entries */
-}
-
-void tlb_init(void)
-{
-	unsigned int config = read_c0_config();
-	unsigned long status;
-
-	probe_tlb(config);
-
-	status = read_c0_status();
-	status &= ~(ST0_UPS | ST0_KPS);
-#ifdef CONFIG_PAGE_SIZE_4KB
-	status |= (TFP_PAGESIZE_4K << 32) | (TFP_PAGESIZE_4K << 36);
-#elif defined(CONFIG_PAGE_SIZE_8KB)
-	status |= (TFP_PAGESIZE_8K << 32) | (TFP_PAGESIZE_8K << 36);
-#elif defined(CONFIG_PAGE_SIZE_16KB)
-	status |= (TFP_PAGESIZE_16K << 32) | (TFP_PAGESIZE_16K << 36);
-#elif defined(CONFIG_PAGE_SIZE_64KB)
-	status |= (TFP_PAGESIZE_64K << 32) | (TFP_PAGESIZE_64K << 36);
-#endif
-	write_c0_status(status);
-
-	write_c0_wired(0);
-
-	local_flush_tlb_all();
-
-	build_tlb_refill_handler();
-}

arch/mips/mm/tlbex.c

···
 		tlbw(p);
 		break;
 
-	case CPU_R4300:
 	case CPU_5KC:
 	case CPU_TX49XX:
 	case CPU_PR4450:
···
 
 	case CPU_VR4131:
 	case CPU_VR4133:
-	case CPU_R5432:
 		uasm_i_nop(p);
 		uasm_i_nop(p);
 		tlbw(p);
 		break;
 
-	case CPU_JZRISC:
+	case CPU_XBURST:
 		tlbw(p);
 		uasm_i_nop(p);
 		break;
···
 		return;
 	}
 
-	if (cpu_has_rixi && _PAGE_NO_EXEC) {
+	if (cpu_has_rixi && !!_PAGE_NO_EXEC) {
 		if (fill_includes_sw_bits) {
 			UASM_i_ROTR(p, reg, reg, ilog2(_PAGE_GLOBAL));
 		} else {
···
 	check_for_high_segbits = current_cpu_data.vmbits > (PGDIR_SHIFT + PGD_ORDER + PAGE_SHIFT - 3);
 #endif
 
-	switch (current_cpu_type()) {
-	case CPU_R2000:
-	case CPU_R3000:
-	case CPU_R3000A:
-	case CPU_R3081E:
-	case CPU_TX3912:
-	case CPU_TX3922:
-	case CPU_TX3927:
+	if (cpu_has_3kex) {
 #ifndef CONFIG_MIPS_PGD_C0_CONTEXT
-		if (cpu_has_local_ebase)
-			build_r3000_tlb_refill_handler();
 		if (!run_once) {
-			if (!cpu_has_local_ebase)
-				build_r3000_tlb_refill_handler();
 			build_setup_pgd();
+			build_r3000_tlb_refill_handler();
 			build_r3000_tlb_load_handler();
 			build_r3000_tlb_store_handler();
 			build_r3000_tlb_modify_handler();
···
 #else
 		panic("No R3000 TLB refill handler");
 #endif
-		break;
-
-	case CPU_R8000:
-		panic("No R8000 TLB refill handler yet");
-		break;
-
-	default:
-		if (cpu_has_ldpte)
-			setup_pw();
-
-		if (!run_once) {
-			scratch_reg = allocate_kscratch();
-			build_setup_pgd();
-			build_r4000_tlb_load_handler();
-			build_r4000_tlb_store_handler();
-			build_r4000_tlb_modify_handler();
-			if (cpu_has_ldpte)
-				build_loongson3_tlb_refill_handler();
-			else if (!cpu_has_local_ebase)
-				build_r4000_tlb_refill_handler();
-			flush_tlb_handlers();
-			run_once++;
-		}
-		if (cpu_has_local_ebase)
-			build_r4000_tlb_refill_handler();
-		if (cpu_has_xpa)
-			config_xpa_params();
-		if (cpu_has_htw)
-			config_htw_params();
+		return;
 	}
+
+	if (cpu_has_ldpte)
+		setup_pw();
+
+	if (!run_once) {
+		scratch_reg = allocate_kscratch();
+		build_setup_pgd();
+		build_r4000_tlb_load_handler();
+		build_r4000_tlb_store_handler();
+		build_r4000_tlb_modify_handler();
+		if (cpu_has_ldpte)
+			build_loongson3_tlb_refill_handler();
+		else
+			build_r4000_tlb_refill_handler();
+		flush_tlb_handlers();
+		run_once++;
+	}
+	if (cpu_has_xpa)
+		config_xpa_params();
+	if (cpu_has_htw)
+		config_htw_params();
 }

arch/mips/mti-malta/malta-memory.c

···
 
 void __init prom_free_prom_memory(void)
 {
-	unsigned long addr;
-	int i;
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
-			continue;
-
-		addr = boot_mem_map.map[i].addr;
-		free_init_pages("YAMON memory",
-				addr, addr + boot_mem_map.map[i].size);
-	}
 }
 
 phys_addr_t mips_cdmm_phys_base(void)

arch/mips/netlogic/xlp/setup.c

···
 
 #include <linux/kernel.h>
 #include <linux/of_fdt.h>
+#include <linux/memblock.h>
 
 #include <asm/idle.h>
 #include <asm/reboot.h>
···
 static void nlm_fixup_mem(void)
 {
 	const int pref_backup = 512;
-	int i;
+	struct memblock_region *mem;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (boot_mem_map.map[i].type != BOOT_MEM_RAM)
-			continue;
-		boot_mem_map.map[i].size -= pref_backup;
+	for_each_memblock(memory, mem) {
+		memblock_remove(mem->base + mem->size - pref_backup,
+			pref_backup);
 	}
 }
 
···
 	/* memory and bootargs from DT */
 	xlp_early_init_devtree();
 
-	if (boot_mem_map.nr_map == 0) {
+	if (memblock_end_of_DRAM() == 0) {
 		pr_info("Using DRAM BARs for memory map.\n");
 		xlp_init_mem_from_bars();
 	}

arch/mips/pci/pci-xtalk-bridge.c

···
  * Most of the IOC3 PCI config register aren't present
  * we emulate what is needed for a normal PCI enumeration
  */
-static u32 emulate_ioc3_cfg(int where, int size)
+static int ioc3_cfg_rd(void *addr, int where, int size, u32 *value)
 {
-	if (size == 1 && where == 0x3d)
-		return 0x01;
-	else if (size == 2 && where == 0x3c)
-		return 0x0100;
-	else if (size == 4 && where == 0x3c)
-		return 0x00000100;
+	u32 cf, shift, mask;
 
-	return 0;
+	switch (where & ~3) {
+	case 0x00 ... 0x10:
+	case 0x40 ... 0x44:
+		if (get_dbe(cf, (u32 *)addr))
+			return PCIBIOS_DEVICE_NOT_FOUND;
+		break;
+	case 0x3c:
+		/* emulate sane interrupt pin value */
+		cf = 0x00000100;
+		break;
+	default:
+		cf = 0;
+		break;
+	}
+	shift = (where & 3) << 3;
+	mask = 0xffffffffU >> ((4 - size) << 3);
+	*value = (cf >> shift) & mask;
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ioc3_cfg_wr(void *addr, int where, int size, u32 value)
+{
+	u32 cf, shift, mask, smask;
+
+	if ((where >= 0x14 && where < 0x40) || (where >= 0x48))
+		return PCIBIOS_SUCCESSFUL;
+
+	if (get_dbe(cf, (u32 *)addr))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	shift = ((where & 3) << 3);
+	mask = (0xffffffffU >> ((4 - size) << 3));
+	smask = mask << shift;
+
+	cf = (cf & ~smask) | ((value & mask) << shift);
+	if (put_dbe(cf, (u32 *)addr))
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	return PCIBIOS_SUCCESSFUL;
 }
 
 static void bridge_disable_swapping(struct pci_dev *dev)
···
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	void *addr;
-	u32 cf, shift, mask;
+	u32 cf;
 	int res;
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID];
···
 	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
-	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto is_ioc3;
+	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) {
+		addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
+		return ioc3_cfg_rd(addr, where, size, value);
+	}
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)];
 
···
 		res = get_dbe(*value, (u32 *)addr);
 
 	return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
-
-is_ioc3:
-
-	/*
-	 * IOC3 special handling
-	 */
-	if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
-		*value = emulate_ioc3_cfg(where, size);
-		return PCIBIOS_SUCCESSFUL;
-	}
-
-	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
-	if (get_dbe(cf, (u32 *)addr))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	shift = ((where & 3) << 3);
-	mask = (0xffffffffU >> ((4 - size) << 3));
-	*value = (cf >> shift) & mask;
-
-	return PCIBIOS_SUCCESSFUL;
 }
 
 static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn,
···
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	void *addr;
-	u32 cf, shift, mask;
+	u32 cf;
 	int res;
 
 	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
···
 	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
-	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto is_ioc3;
+	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) {
+		addr = &bridge->b_type1_cfg.c[(fn << 8) | (where & ~3)];
+		return ioc3_cfg_rd(addr, where, size, value);
+	}
 
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))];
 
···
 		res = get_dbe(*value, (u32 *)addr);
 
 	return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
-
-is_ioc3:
-
-	/*
-	 * IOC3 special handling
-	 */
-	if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
-		*value = emulate_ioc3_cfg(where, size);
-		return PCIBIOS_SUCCESSFUL;
-	}
-
-	addr = &bridge->b_type1_cfg.c[(fn << 8) | where];
-	if (get_dbe(cf, (u32 *)addr))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	shift = ((where & 3) << 3);
-	mask = (0xffffffffU >> ((4 - size) << 3));
-	*value = (cf >> shift) & mask;
-
-	return PCIBIOS_SUCCESSFUL;
 }
 
 static int pci_read_config(struct pci_bus *bus, unsigned int devfn,
···
 	int slot = PCI_SLOT(devfn);
 	int fn = PCI_FUNC(devfn);
 	void *addr;
-	u32 cf, shift, mask, smask;
+	u32 cf;
 	int res;
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID];
···
 	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
-	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto is_ioc3;
+	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) {
+		addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
+		return ioc3_cfg_wr(addr, where, size, value);
+	}
 
 	addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)];
 
···
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	return PCIBIOS_SUCCESSFUL;
-
-is_ioc3:
-
-	/*
-	 * IOC3 special handling
-	 */
-	if ((where >= 0x14 && where < 0x40) || (where >= 0x48))
-		return PCIBIOS_SUCCESSFUL;
-
-	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
-
-	if (get_dbe(cf, (u32 *)addr))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	shift = ((where & 3) << 3);
-	mask = (0xffffffffU >> ((4 - size) << 3));
-	smask = mask << shift;
-
-	cf = (cf & ~smask) | ((value & mask) << shift);
-	if (put_dbe(cf, (u32 *)addr))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	return PCIBIOS_SUCCESSFUL;
 }
 
 static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn,
···
 	int fn = PCI_FUNC(devfn);
 	int busno = bus->number;
 	void *addr;
-	u32 cf, shift, mask, smask;
+	u32 cf;
 	int res;
 
 	bridge_write(bc, b_pci_cfg, (busno << 16) | (slot << 11));
···
 	 * IOC3 is broken beyond belief ...  Don't even give the
 	 * generic PCI code a chance to look at it for real ...
 	 */
-	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16)))
-		goto is_ioc3;
+	if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) {
+		addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
+		return ioc3_cfg_wr(addr, where, size, value);
+	}
 
 	addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))];
 
···
 		res = put_dbe(value, (u32 *)addr);
 
 	if (res)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	return PCIBIOS_SUCCESSFUL;
-
-is_ioc3:
-
-	/*
-	 * IOC3 special handling
-	 */
-	if ((where >= 0x14 && where < 0x40) || (where >= 0x48))
-		return PCIBIOS_SUCCESSFUL;
-
-	addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2];
-	if (get_dbe(cf, (u32 *)addr))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	shift = ((where & 3) << 3);
-	mask = (0xffffffffU >> ((4 - size) << 3));
-	smask = mask << shift;
-
-	cf = (cf & ~smask) | ((value & mask) << shift);
-	if (put_dbe(cf, (u32 *)addr))
 		return PCIBIOS_DEVICE_NOT_FOUND;
 
 	return PCIBIOS_SUCCESSFUL;

arch/mips/pmcs-msp71xx/msp_prom.c

···
 /* memory blocks */
 struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS];
 
+static phys_addr_t prom_mem_base[MAX_PROM_MEM] __initdata;
+static phys_addr_t prom_mem_size[MAX_PROM_MEM] __initdata;
+static unsigned int nr_prom_mem __initdata;
+
 /* default feature sets */
 static char msp_default_features[] =
 #if defined(CONFIG_PMC_MSP4200_EVAL) \
···
 
 		add_memory_region(base, size, type);
 		p++;
+
+		if (type == BOOT_MEM_ROM_DATA) {
+			if (nr_prom_mem >= 5) {
+				pr_err("Too many ROM DATA regions");
+				continue;
+			}
+			prom_mem_base[nr_prom_mem] = base;
+			prom_mem_size[nr_prom_mem] = size;
+			nr_prom_mem++;
+		}
 	}
 }
 
···
 	envp[i] = NULL;			/* end array with null pointer */
 	prom_envp = envp;
 
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA)
-			continue;
-
-		addr = boot_mem_map.map[i].addr;
+	for (i = 0; i < nr_prom_mem; i++) {
 		free_init_pages("prom memory",
-				addr, addr + boot_mem_map.map[i].size);
+			prom_mem_base[i], prom_mem_base[i] + prom_mem_size[i]);
 	}
 }
 

arch/mips/ralink/Kconfig

···
 		select MIPS_GIC
 		select COMMON_CLK
 		select CLKSRC_MIPS_GIC
-		select HAVE_PCI
 endchoice
 
 choice

arch/mips/ralink/timer.c

···
 	}
 
 	rt->irq = platform_get_irq(pdev, 0);
-	if (rt->irq < 0) {
-		dev_err(&pdev->dev, "failed to load irq\n");
+	if (rt->irq < 0)
 		return rt->irq;
-	}
 
 	rt->membase = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(rt->membase))

arch/mips/sgi-ip22/ip28-berr.c

···
 
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/sched/debug.h>
 #include <linux/sched/signal.h>
···
 	       field, regs->cp0_epc, field, regs->regs[31]);
 }
 
-/*
- * Check, whether MC's (virtual) DMA address caused the bus error.
- * See "Virtual DMA Specification", Draft 1.5, Feb 13 1992, SGI
- */
-
-static int addr_is_ram(unsigned long addr, unsigned sz)
-{
-	int i;
-
-	for (i = 0; i < boot_mem_map.nr_map; i++) {
-		unsigned long a = boot_mem_map.map[i].addr;
-		if (a <= addr && addr+sz <= a+boot_mem_map.map[i].size)
-			return 1;
-	}
-	return 0;
-}
-
 static int check_microtlb(u32 hi, u32 lo, unsigned long vaddr)
 {
 	/* This is likely rather similar to correct code ;-) */
···
 			/* PTEIndex is VPN-low (bits [22:14]/[20:12] ?) */
 			unsigned long pte = (lo >> 6) << 12; /* PTEBase */
 			pte += 8*((vaddr >> pgsz) & 0x1ff);
-			if (addr_is_ram(pte, 8)) {
+			if (page_is_ram(PFN_DOWN(pte))) {
 				/*
 				 * Note: Since DMA hardware does look up
 				 * translation on its own, this PTE *must*

arch/mips/vdso/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 # Objects to go into the VDSO.
-obj-vdso-y := elf.o gettimeofday.o sigreturn.o
+
+# Absolute relocation type $(ARCH_REL_TYPE_ABS) needs to be defined before
+# the inclusion of generic Makefile.
+ARCH_REL_TYPE_ABS := R_MIPS_JUMP_SLOT|R_MIPS_GLOB_DAT
+include $(srctree)/lib/vdso/Makefile
+
+obj-vdso-y := elf.o vgettimeofday.o sigreturn.o
 
 # Common compiler flags between ABIs.
 ccflags-vdso := \
···
 ccflags-vdso += $(filter --target=%,$(KBUILD_CFLAGS))
 endif
 
+#
+# The -fno-jump-tables flag only prevents the compiler from generating
+# jump tables but does not prevent the compiler from emitting absolute
+# offsets.
 cflags-vdso := $(ccflags-vdso) \
 	$(filter -W%,$(filter-out -Wa$(comma)%,$(KBUILD_CFLAGS))) \
-	-O2 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \
-	-DDISABLE_BRANCH_PROFILING \
+	-O3 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \
+	-fno-stack-protector -fno-jump-tables -DDISABLE_BRANCH_PROFILING \
 	$(call cc-option, -fno-asynchronous-unwind-tables) \
 	$(call cc-option, -fno-stack-protector)
 aflags-vdso := $(ccflags-vdso) \
 	-D__ASSEMBLY__ -Wa,-gdwarf-2
+
+ifneq ($(c-gettimeofday-y),)
+CFLAGS_vgettimeofday.o = -include $(c-gettimeofday-y)
+
+# config-n32-o32-env.c prepares the environment to build a 32bit vDSO
+# library on a 64bit kernel.
+# Note: Needs to be included before than the generic library.
+CFLAGS_vgettimeofday-o32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
+CFLAGS_vgettimeofday-n32.o = -include $(srctree)/$(src)/config-n32-o32-env.c -include $(c-gettimeofday-y)
+endif
+
+CFLAGS_REMOVE_vgettimeofday.o = -pg
 
 #
 # For the pre-R6 code in arch/mips/vdso/vdso.h for locating
···
 	$(addprefix -Wl$(comma),$(filter -E%,$(KBUILD_CFLAGS))) \
 	-nostdlib -shared -Wl,--hash-style=sysv -Wl,--build-id
 
+CFLAGS_REMOVE_vdso.o = -pg
+
 GCOV_PROFILE := n
 UBSAN_SANITIZE := n
 
···
 # Shared build commands.
 #
 
+quiet_cmd_vdsold_and_vdso_check = LD      $@
+      cmd_vdsold_and_vdso_check = $(cmd_vdsold); $(cmd_vdso_check)
+
 quiet_cmd_vdsold = VDSO    $@
       cmd_vdsold = $(CC) $(c_flags) $(VDSO_LDFLAGS) \
                    -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
 
-quiet_cmd_vdsoas_o_S = AS       $@
+quiet_cmd_vdsoas_o_S = AS      $@
       cmd_vdsoas_o_S = $(CC) $(a_flags) -c -o $@ $<
 
 # Strip rule for the raw .so files
···
 $(obj)/vdso.lds: KBUILD_CPPFLAGS := $(ccflags-vdso) $(native-abi)
 
 $(obj)/vdso.so.dbg.raw: $(obj)/vdso.lds $(obj-vdso) FORCE
-	$(call if_changed,vdsold)
+	$(call if_changed,vdsold_and_vdso_check)
 
 $(obj)/vdso-image.c: $(obj)/vdso.so.dbg.raw $(obj)/vdso.so.raw \
                      $(obj)/genvdso FORCE
···
 	$(call if_changed_dep,cpp_lds_S)
 
 $(obj)/vdso-o32.so.dbg.raw: $(obj)/vdso-o32.lds $(obj-vdso-o32) FORCE
-	$(call if_changed,vdsold)
+	$(call if_changed,vdsold_and_vdso_check)
 
 $(obj)/vdso-o32-image.c: VDSO_NAME := o32
 $(obj)/vdso-o32-image.c: $(obj)/vdso-o32.so.dbg.raw $(obj)/vdso-o32.so.raw \
···
 	$(call if_changed_dep,cpp_lds_S)
 
 $(obj)/vdso-n32.so.dbg.raw: $(obj)/vdso-n32.lds $(obj-vdso-n32) FORCE
-	$(call if_changed,vdsold)
+	$(call if_changed,vdsold_and_vdso_check)
 
 $(obj)/vdso-n32-image.c: VDSO_NAME := n32
 $(obj)/vdso-n32-image.c: $(obj)/vdso-n32.so.dbg.raw $(obj)/vdso-n32.so.raw \

arch/mips/vdso/config-n32-o32-env.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Configuration file for O32 and N32 binaries.
+ * Note: To be included before lib/vdso/gettimeofday.c
+ */
+#if defined(CONFIG_MIPS32_O32) || defined(CONFIG_MIPS32_N32)
+/*
+ * In case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
+ * configuration.
+ */
+#undef CONFIG_64BIT
+
+#define BUILD_VDSO32
+#define CONFIG_32BIT 1
+#define CONFIG_GENERIC_ATOMIC64 1
+#define BUILD_VDSO32_64
+
+#endif
+

arch/mips/vdso/elf.S

···
  * Author: Alex Smith <[e-mail]>
  */
 
-#include "vdso.h"
+#include <asm/vdso/vdso.h>
 
 #include <asm/isa-rev.h>
 

arch/mips/vdso/sigreturn.S

···
  * Author: Alex Smith <[e-mail]>
  */
 
-#include "vdso.h"
+#include <asm/vdso/vdso.h>
 
 #include <uapi/asm/unistd.h>
 

arch/mips/vdso/vdso.h arch/mips/include/asm/vdso/vdso.h

···
 
 #include <asm/sgidefs.h>
 
-#if _MIPS_SIM != _MIPS_SIM_ABI64 && defined(CONFIG_64BIT)
-
-/* Building 32-bit VDSO for the 64-bit kernel. Fake a 32-bit Kconfig. */
-#define BUILD_VDSO32_64
-#undef CONFIG_64BIT
-#define CONFIG_32BIT 1
-#ifndef __ASSEMBLY__
-#include <asm-generic/atomic64.h>
-#endif
-#endif
-
 #ifndef __ASSEMBLY__
 
 #include <asm/asm.h>
···
 	return addr;
 }
 
-static inline const union mips_vdso_data *get_vdso_data(void)
+static inline const struct vdso_data *get_vdso_data(void)
 {
-	return (const union mips_vdso_data *)(get_vdso_base() - PAGE_SIZE);
+	return (const struct vdso_data *)(get_vdso_base() - PAGE_SIZE);
 }
 
 #ifdef CONFIG_CLKSRC_MIPS_GIC
 
-static inline void __iomem *get_gic(const union mips_vdso_data *data)
+static inline void __iomem *get_gic(const struct vdso_data *data)
 {
 	return (void __iomem *)data - PAGE_SIZE;
 }

arch/mips/vdso/vdso.lds.S

···
 	global:
 		__vdso_clock_gettime;
 		__vdso_gettimeofday;
+		__vdso_clock_getres;
+#if _MIPS_SIM != _MIPS_SIM_ABI64
+		__vdso_clock_gettime64;
+#endif
 #endif
 	local: *;
 	};

arch/mips/vdso/vgettimeofday.c

···
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MIPS64 and compat userspace implementations of gettimeofday()
+ * and similar.
+ *
+ * Copyright (C) 2015 Imagination Technologies
+ * Copyright (C) 2018 ARM Limited
+ *
+ */
+#include <linux/time.h>
+#include <linux/types.h>
+
+#if _MIPS_SIM != _MIPS_SIM_ABI64
+int __vdso_clock_gettime(clockid_t clock,
+			 struct old_timespec32 *ts)
+{
+	return __cvdso_clock_gettime32(clock, ts);
+}
+
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz)
+{
+	return __cvdso_gettimeofday(tv, tz);
+}
+
+int __vdso_clock_getres(clockid_t clock_id,
+			struct old_timespec32 *res)
+{
+	return __cvdso_clock_getres_time32(clock_id, res);
+}
+
+int __vdso_clock_gettime64(clockid_t clock,
+			   struct __kernel_timespec *ts)
+{
+	return __cvdso_clock_gettime(clock, ts);
+}
+
+#else
+
+int __vdso_clock_gettime(clockid_t clock,
+			 struct __kernel_timespec *ts)
+{
+	return __cvdso_clock_gettime(clock, ts);
+}
+
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
+			struct timezone *tz)
+{
+	return __cvdso_gettimeofday(tv, tz);
+}
+
+int __vdso_clock_getres(clockid_t clock_id,
+			struct __kernel_timespec *res)
+{
+	return __cvdso_clock_getres(clock_id, res);
+}
+
+#endif

drivers/clk/ingenic/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
-menu "Ingenic JZ47xx CGU drivers"
+menu "Ingenic SoCs drivers"
 	depends on MIPS
 
 config INGENIC_CGU_COMMON
···
 	  and compatible SoCs.
 
 	  If building for a JZ4780 SoC, you want to say Y here.
+
+config INGENIC_TCU_CLK
+	bool "Ingenic JZ47xx TCU clocks driver"
+	default MACH_INGENIC
+	select MFD_SYSCON
+	help
+	  Support the clocks of the Timer/Counter Unit (TCU) of the Ingenic
+	  JZ47xx SoCs.
 
 endmenu

drivers/clk/ingenic/Makefile

···
 obj-$(CONFIG_INGENIC_CGU_JZ4725B)	+= jz4725b-cgu.o
 obj-$(CONFIG_INGENIC_CGU_JZ4770)	+= jz4770-cgu.o
 obj-$(CONFIG_INGENIC_CGU_JZ4780)	+= jz4780-cgu.o
+obj-$(CONFIG_INGENIC_TCU_CLK)		+= tcu.o

drivers/clk/ingenic/jz4740-cgu.c

···
 		.parents = { JZ4740_CLK_EXT, -1, -1, -1 },
 		.gate = { CGU_REG_CLKGR, 5 },
 	},
+
+	[JZ4740_CLK_TCU] = {
+		"tcu", CGU_CLK_GATE,
+		.parents = { JZ4740_CLK_EXT, -1, -1, -1 },
+		.gate = { CGU_REG_CLKGR, 1 },
+	},
 };
 
 static void __init jz4740_cgu_init(struct device_node *np)

drivers/clk/ingenic/tcu.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * JZ47xx SoCs TCU clocks driver
+ * Copyright (C) 2019 Paul Cercueil <[e-mail]>
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clockchips.h>
+#include <linux/mfd/ingenic-tcu.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/syscore_ops.h>
+
+#include <dt-bindings/clock/ingenic,tcu.h>
+
+/* 8 channels max + watchdog + OST */
+#define TCU_CLK_COUNT	10
+
+#undef pr_fmt
+#define pr_fmt(fmt) "ingenic-tcu-clk: " fmt
+
+enum tcu_clk_parent {
+	TCU_PARENT_PCLK,
+	TCU_PARENT_RTC,
+	TCU_PARENT_EXT,
+};
+
+struct ingenic_soc_info {
+	unsigned int num_channels;
+	bool has_ost;
+	bool has_tcu_clk;
+};
+
+struct ingenic_tcu_clk_info {
+	struct clk_init_data init_data;
+	u8 gate_bit;
+	u8 tcsr_reg;
+};
+
+struct ingenic_tcu_clk {
+	struct clk_hw hw;
+	unsigned int idx;
+	struct ingenic_tcu *tcu;
+	const struct ingenic_tcu_clk_info *info;
+};
+
+struct ingenic_tcu {
+	const struct ingenic_soc_info *soc_info;
+	struct regmap *map;
+	struct clk *clk;
+
+	struct clk_hw_onecell_data *clocks;
+};
+
+static struct ingenic_tcu *ingenic_tcu;
+
+static inline struct ingenic_tcu_clk *to_tcu_clk(struct clk_hw *hw)
+{
+	return container_of(hw, struct ingenic_tcu_clk, hw);
+}
+
+static int ingenic_tcu_enable(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	struct ingenic_tcu *tcu = tcu_clk->tcu;
+
+	regmap_write(tcu->map, TCU_REG_TSCR, BIT(info->gate_bit));
+
+	return 0;
+}
+
+static void ingenic_tcu_disable(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	struct ingenic_tcu *tcu = tcu_clk->tcu;
+
+	regmap_write(tcu->map, TCU_REG_TSSR, BIT(info->gate_bit));
+}
+
+static int ingenic_tcu_is_enabled(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	unsigned int value;
+
+	regmap_read(tcu_clk->tcu->map, TCU_REG_TSR, &value);
+
+	return !(value & BIT(info->gate_bit));
+}
+
+static bool ingenic_tcu_enable_regs(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	struct ingenic_tcu *tcu = tcu_clk->tcu;
+	bool enabled = false;
+
+	/*
+	 * If the SoC has no global TCU clock, we must ungate the channel's
+	 * clock to be able to access its registers.
+	 * If we have a TCU clock, it will be enabled automatically as it has
+	 * been attached to the regmap.
+	 */
+	if (!tcu->clk) {
+		enabled = !!ingenic_tcu_is_enabled(hw);
+		regmap_write(tcu->map, TCU_REG_TSCR, BIT(info->gate_bit));
+	}
+
+	return enabled;
+}
+
+static void ingenic_tcu_disable_regs(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	struct ingenic_tcu *tcu = tcu_clk->tcu;
+
+	if (!tcu->clk)
+		regmap_write(tcu->map, TCU_REG_TSSR, BIT(info->gate_bit));
+}
+
+static u8 ingenic_tcu_get_parent(struct clk_hw *hw)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	unsigned int val = 0;
+	int ret;
+
+	ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &val);
+	WARN_ONCE(ret < 0, "Unable to read TCSR %d", tcu_clk->idx);
+
+	return ffs(val & TCU_TCSR_PARENT_CLOCK_MASK) - 1;
+}
+
+static int ingenic_tcu_set_parent(struct clk_hw *hw, u8 idx)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	bool was_enabled;
+	int ret;
+
+	was_enabled = ingenic_tcu_enable_regs(hw);
+
+	ret = regmap_update_bits(tcu_clk->tcu->map, info->tcsr_reg,
+				 TCU_TCSR_PARENT_CLOCK_MASK, BIT(idx));
+	WARN_ONCE(ret < 0, "Unable to update TCSR %d", tcu_clk->idx);
+
+	if (!was_enabled)
+		ingenic_tcu_disable_regs(hw);
+
+	return 0;
+}
+
+static unsigned long ingenic_tcu_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	unsigned int prescale;
+	int ret;
+
+	ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &prescale);
+	WARN_ONCE(ret < 0, "Unable to read TCSR %d", tcu_clk->idx);
+
+	prescale = (prescale & TCU_TCSR_PRESCALE_MASK) >> TCU_TCSR_PRESCALE_LSB;
+
+	return parent_rate >> (prescale * 2);
+}
+
+static u8 ingenic_tcu_get_prescale(unsigned long rate, unsigned long req_rate)
+{
+	u8 prescale;
+
+	for (prescale = 0; prescale < 5; prescale++)
+		if ((rate >> (prescale * 2)) <= req_rate)
+			return prescale;
+
+	return 5; /* /1024 divider */
+}
+
+static long ingenic_tcu_round_rate(struct clk_hw *hw, unsigned long req_rate,
+		unsigned long *parent_rate)
+{
+	unsigned long rate = *parent_rate;
+	u8 prescale;
+
+	if (req_rate > rate)
+		return -EINVAL;
+
+	prescale = ingenic_tcu_get_prescale(rate, req_rate);
+
+	return rate >> (prescale * 2);
+}
+
+static int ingenic_tcu_set_rate(struct clk_hw *hw, unsigned long req_rate,
+		unsigned long parent_rate)
+{
+	struct ingenic_tcu_clk *tcu_clk = to_tcu_clk(hw);
+	const struct ingenic_tcu_clk_info *info = tcu_clk->info;
+	u8 prescale = ingenic_tcu_get_prescale(parent_rate, req_rate);
+	bool was_enabled;
+	int ret;
+
+	was_enabled = ingenic_tcu_enable_regs(hw);
+
+	ret = regmap_update_bits(tcu_clk->tcu->map, info->tcsr_reg,
+				 TCU_TCSR_PRESCALE_MASK,
+				 prescale << TCU_TCSR_PRESCALE_LSB);
+	WARN_ONCE(ret < 0, "Unable to update TCSR %d", tcu_clk->idx);
+
+	if (!was_enabled)
+		ingenic_tcu_disable_regs(hw);
+
+	return 0;
+}
+
+static const struct clk_ops ingenic_tcu_clk_ops = {
+	.get_parent	= ingenic_tcu_get_parent,
+	.set_parent	= ingenic_tcu_set_parent,
+
+	.recalc_rate	= ingenic_tcu_recalc_rate,
+	.round_rate	= ingenic_tcu_round_rate,
+	.set_rate	= ingenic_tcu_set_rate,
+
+	.enable		= ingenic_tcu_enable,
+	.disable	= ingenic_tcu_disable,
+	.is_enabled	= ingenic_tcu_is_enabled,
+};
+
+static const char * const ingenic_tcu_timer_parents[] = {
+	[TCU_PARENT_PCLK] = "pclk",
+	[TCU_PARENT_RTC]  = "rtc",
+	[TCU_PARENT_EXT]  = "ext",
+};
+
+#define DEF_TIMER(_name, _gate_bit, _tcsr)				\
+	{								\
+		.init_data = {						\
+			.name = _name,					\
+			.parent_names = ingenic_tcu_timer_parents,	\
+			.num_parents = ARRAY_SIZE(ingenic_tcu_timer_parents),\
+			.ops = &ingenic_tcu_clk_ops,			\
+			.flags = CLK_SET_RATE_UNGATE,			\
+		},							\
+		.gate_bit = _gate_bit,					\
+		.tcsr_reg = _tcsr,					\
+	}
+static const struct ingenic_tcu_clk_info ingenic_tcu_clk_info[] = {
+	[TCU_CLK_TIMER0] = DEF_TIMER("timer0", 0, TCU_REG_TCSRc(0)),
+	[TCU_CLK_TIMER1] = DEF_TIMER("timer1", 1, TCU_REG_TCSRc(1)),
+	[TCU_CLK_TIMER2] = DEF_TIMER("timer2", 2, TCU_REG_TCSRc(2)),
+	[TCU_CLK_TIMER3] = DEF_TIMER("timer3", 3, TCU_REG_TCSRc(3)),
+	[TCU_CLK_TIMER4] = DEF_TIMER("timer4", 4, TCU_REG_TCSRc(4)),
+	[TCU_CLK_TIMER5] = DEF_TIMER("timer5", 5, TCU_REG_TCSRc(5)),
+	[TCU_CLK_TIMER6] = DEF_TIMER("timer6", 6, TCU_REG_TCSRc(6)),
+	[TCU_CLK_TIMER7] = DEF_TIMER("timer7", 7, TCU_REG_TCSRc(7)),
+};
+
+static const struct ingenic_tcu_clk_info ingenic_tcu_watchdog_clk_info =
+					 DEF_TIMER("wdt", 16, TCU_REG_WDT_TCSR);
+static const struct ingenic_tcu_clk_info ingenic_tcu_ost_clk_info =
+					 DEF_TIMER("ost", 15, TCU_REG_OST_TCSR);
+#undef DEF_TIMER
+
+static int __init ingenic_tcu_register_clock(struct ingenic_tcu *tcu,
+			unsigned int idx, enum tcu_clk_parent parent,
+			const struct ingenic_tcu_clk_info *info,
+			struct clk_hw_onecell_data *clocks)
+{
+	struct ingenic_tcu_clk *tcu_clk;
+	int err;
+
+	tcu_clk = kzalloc(sizeof(*tcu_clk), GFP_KERNEL);
+	if (!tcu_clk)
+		return -ENOMEM;
+
+	tcu_clk->hw.init = &info->init_data;
+	tcu_clk->idx = idx;
+	tcu_clk->info = info;
+	tcu_clk->tcu = tcu;
+
+	/* Reset channel and clock divider, set default parent */
+	ingenic_tcu_enable_regs(&tcu_clk->hw);
+	regmap_update_bits(tcu->map, info->tcsr_reg, 0xffff, BIT(parent));
+	ingenic_tcu_disable_regs(&tcu_clk->hw);
+
+	err = clk_hw_register(NULL, &tcu_clk->hw);
+	if (err) {
+		kfree(tcu_clk);
+		return err;
+	}
+
+	clocks->hws[idx] = &tcu_clk->hw;
+
+	return 0;
+}
+
+static const struct ingenic_soc_info jz4740_soc_info = {
+	.num_channels = 8,
+	.has_ost = false,
+	.has_tcu_clk = true,
+};
+
+static const struct ingenic_soc_info jz4725b_soc_info = {
+	.num_channels = 6,
+	.has_ost = true,
+	.has_tcu_clk = true,
+};
+
+static const struct ingenic_soc_info jz4770_soc_info = {
+	.num_channels = 8,
+	.has_ost = true,
+	.has_tcu_clk = false,
+};
+
+static const struct of_device_id ingenic_tcu_of_match[] __initconst = {
+	{ .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, },
+	{ .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, },
+	{ .compatible = "ingenic,jz4770-tcu", .data = &jz4770_soc_info, },
+	{ /* sentinel */ }
+};
+
+static int __init ingenic_tcu_probe(struct device_node *np)
+{
+	const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np);
+	struct ingenic_tcu *tcu;
+	struct regmap *map;
+	unsigned int i;
+	int ret;
+
+	map = device_node_to_regmap(np);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	tcu = kzalloc(sizeof(*tcu), GFP_KERNEL);
+	if (!tcu)
+		return -ENOMEM;
+
+	tcu->map = map;
+	tcu->soc_info = id->data;
+
+	if (tcu->soc_info->has_tcu_clk) {
+		tcu->clk = of_clk_get_by_name(np, "tcu");
+		if (IS_ERR(tcu->clk)) {
+			ret = PTR_ERR(tcu->clk);
+			pr_crit("Cannot get TCU clock\n");
+			goto err_free_tcu;
+		}
+
+		ret = clk_prepare_enable(tcu->clk);
+		if (ret) {
+			pr_crit("Unable to enable TCU clock\n");
+			goto err_put_clk;
+		}
+	}
+
+	tcu->clocks = kzalloc(sizeof(*tcu->clocks) +
+			      sizeof(*tcu->clocks->hws) * TCU_CLK_COUNT,
+			      GFP_KERNEL);
+	if (!tcu->clocks) {
+		ret = -ENOMEM;
+		goto err_clk_disable;
+	}
+
+	tcu->clocks->num = TCU_CLK_COUNT;
+
+	for (i = 0; i < tcu->soc_info->num_channels; i++) {
+		ret = ingenic_tcu_register_clock(tcu, i, TCU_PARENT_EXT,
+						 &ingenic_tcu_clk_info[i],
+						 tcu->clocks);
+		if (ret) {
+			pr_crit("cannot register clock %d\n", i);
+			goto err_unregister_timer_clocks;
+		}
+	}
+
+	/*
+	 * We set EXT as the default parent clock for all the TCU clocks
+	 * except for the watchdog one, where we set the RTC clock as the
+	 * parent. Since the EXT and PCLK are much faster than the RTC clock,
+	 * the watchdog would kick after a maximum time of 5s, and we might
+	 * want a slower kicking time.
+	 */
+	ret = ingenic_tcu_register_clock(tcu, TCU_CLK_WDT, TCU_PARENT_RTC,
+					 &ingenic_tcu_watchdog_clk_info,
+					 tcu->clocks);
+	if (ret) {
+		pr_crit("cannot register watchdog clock\n");
+		goto err_unregister_timer_clocks;
+	}
+
+	if (tcu->soc_info->has_ost) {
+		ret = ingenic_tcu_register_clock(tcu, TCU_CLK_OST,
+						 TCU_PARENT_EXT,
+						 &ingenic_tcu_ost_clk_info,
+						 tcu->clocks);
+		if (ret) {
+			pr_crit("cannot register ost clock\n");
+			goto err_unregister_watchdog_clock;
+		}
+	}
+
+	ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, tcu->clocks);
+	if (ret) {
+		pr_crit("cannot add OF clock provider\n");
+		goto err_unregister_ost_clock;
+	}
+
+	ingenic_tcu = tcu;
+
+	return 0;
+
+err_unregister_ost_clock:
+	if (tcu->soc_info->has_ost)
+		clk_hw_unregister(tcu->clocks->hws[i + 1]);
+err_unregister_watchdog_clock:
+	clk_hw_unregister(tcu->clocks->hws[i]);
+err_unregister_timer_clocks:
+	for (i = 0; i < tcu->clocks->num; i++)
+		if (tcu->clocks->hws[i])
+			clk_hw_unregister(tcu->clocks->hws[i]);
+	kfree(tcu->clocks);
+err_clk_disable:
+	if (tcu->soc_info->has_tcu_clk)
+		clk_disable_unprepare(tcu->clk);
+err_put_clk:
+	if (tcu->soc_info->has_tcu_clk)
+		clk_put(tcu->clk);
+err_free_tcu:
+	kfree(tcu);
+	return ret;
+}
+
+static int __maybe_unused tcu_pm_suspend(void)
+{
+	struct ingenic_tcu *tcu = ingenic_tcu;
+
+	if (tcu->clk)
+		clk_disable(tcu->clk);
+
+	return 0;
+}
+
+static void __maybe_unused tcu_pm_resume(void)
+{
+	struct ingenic_tcu *tcu = ingenic_tcu;
+
+	if (tcu->clk)
+		clk_enable(tcu->clk);
+}
+
+static struct syscore_ops __maybe_unused tcu_pm_ops = {
+	.suspend = tcu_pm_suspend,
+	.resume = tcu_pm_resume,
+};
+
+static void __init ingenic_tcu_init(struct device_node *np)
+{
+	int ret = ingenic_tcu_probe(np);
+
+	if (ret)
+		pr_crit("Failed to initialize TCU clocks: %d\n", ret);
+
+	if (IS_ENABLED(CONFIG_PM_SLEEP))
+		register_syscore_ops(&tcu_pm_ops);
+}
+
+CLK_OF_DECLARE_DRIVER(jz4740_cgu, "ingenic,jz4740-tcu", ingenic_tcu_init);
+CLK_OF_DECLARE_DRIVER(jz4725b_cgu, "ingenic,jz4725b-tcu", ingenic_tcu_init);
+CLK_OF_DECLARE_DRIVER(jz4770_cgu, "ingenic,jz4770-tcu", ingenic_tcu_init);

drivers/clocksource/Kconfig

···
 	help
 	  Enables the support for Milbeaut timer driver.
 
+config INGENIC_TIMER
+	bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
+	default MACH_INGENIC
+	depends on MIPS || COMPILE_TEST
+	depends on COMMON_CLK
+	select MFD_SYSCON
+	select TIMER_OF
+	select IRQ_DOMAIN
+	help
+	  Support for the timer/counter unit of the Ingenic JZ SoCs.
+
 endmenu

drivers/clocksource/Makefile

···
 obj-$(CONFIG_H8300_TMR8)		+= h8300_timer8.o
 obj-$(CONFIG_H8300_TMR16)		+= h8300_timer16.o
 obj-$(CONFIG_H8300_TPU)			+= h8300_tpu.o
+obj-$(CONFIG_INGENIC_TIMER)		+= ingenic-timer.o
 obj-$(CONFIG_CLKSRC_ST_LPC)		+= clksrc_st_lpc.o
 obj-$(CONFIG_X86_NUMACHIP)		+= numachip.o
 obj-$(CONFIG_ATCPIT100_TIMER)		+= timer-atcpit100.o

drivers/clocksource/ingenic-timer.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * JZ47xx SoCs TCU IRQ driver
+ * Copyright (C) 2019 Paul Cercueil <[e-mail]>
+ */
+
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/clockchips.h>
+#include <linux/clocksource.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/ingenic-tcu.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/sched_clock.h>
+
+#include <dt-bindings/clock/ingenic,tcu.h>
+
+struct ingenic_soc_info {
+	unsigned int num_channels;
+};
+
+struct ingenic_tcu {
+	struct regmap *map;
+	struct clk *timer_clk, *cs_clk;
+	unsigned int timer_channel, cs_channel;
+	struct clock_event_device cevt;
+	struct clocksource cs;
+	char name[4];
+	unsigned long pwm_channels_mask;
+};
+
+static struct ingenic_tcu *ingenic_tcu;
+
+static u64 notrace ingenic_tcu_timer_read(void)
+{
+	struct ingenic_tcu *tcu = ingenic_tcu;
+	unsigned int count;
+
+	regmap_read(tcu->map, TCU_REG_TCNTc(tcu->cs_channel), &count);
+
+	return count;
+}
+
+static u64 notrace ingenic_tcu_timer_cs_read(struct clocksource *cs)
+{
+	return ingenic_tcu_timer_read();
+}
+
+static inline struct ingenic_tcu *to_ingenic_tcu(struct clock_event_device *evt)
+{
+	return container_of(evt, struct ingenic_tcu, cevt);
+}
+
+static int ingenic_tcu_cevt_set_state_shutdown(struct clock_event_device *evt)
+{
+	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
+
+	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));
+
+	return 0;
+}
+
+static int ingenic_tcu_cevt_set_next(unsigned long next,
+				     struct clock_event_device *evt)
+{
+	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
+
+	if (next > 0xffff)
+		return -EINVAL;
+
+	regmap_write(tcu->map, TCU_REG_TDFRc(tcu->timer_channel), next);
+	regmap_write(tcu->map, TCU_REG_TCNTc(tcu->timer_channel), 0);
+	regmap_write(tcu->map, TCU_REG_TESR, BIT(tcu->timer_channel));
+
+	return 0;
+}
+
+static irqreturn_t ingenic_tcu_cevt_cb(int irq, void *dev_id)
+{
+	struct clock_event_device *evt = dev_id;
+	struct ingenic_tcu *tcu = to_ingenic_tcu(evt);
+
+	regmap_write(tcu->map, TCU_REG_TECR, BIT(tcu->timer_channel));
+
+	if (evt->event_handler)
+		evt->event_handler(evt);
+
+	return IRQ_HANDLED;
+}
+
+static struct clk * __init ingenic_tcu_get_clock(struct device_node *np, int id)
+{
+	struct of_phandle_args args;
+
+	args.np = np;
+	args.args_count = 1;
+	args.args[0] = id;
+
+	return of_clk_get_from_provider(&args);
+}
+
+static int __init ingenic_tcu_timer_init(struct device_node *np,
+					 struct ingenic_tcu *tcu)
+{
+	unsigned int timer_virq, channel = tcu->timer_channel;
+	struct irq_domain *domain;
+	unsigned long rate;
+	int err;
+
+	tcu->timer_clk = ingenic_tcu_get_clock(np, channel);
+	if (IS_ERR(tcu->timer_clk))
+		return PTR_ERR(tcu->timer_clk);
+
+	err = clk_prepare_enable(tcu->timer_clk);
+	if (err)
+		goto err_clk_put;
+
+	rate = clk_get_rate(tcu->timer_clk);
+	if (!rate) {
+		err = -EINVAL;
+		goto err_clk_disable;
+	}
+
+	domain = irq_find_host(np);
+	if (!domain) {
+		err = -ENODEV;
+		goto err_clk_disable;
+	}
+
+	timer_virq = irq_create_mapping(domain, channel);
+	if (!timer_virq) {
+		err = -EINVAL;
+		goto err_clk_disable;
+	}
+
+	snprintf(tcu->name, sizeof(tcu->name), "TCU");
+
+	err = request_irq(timer_virq, ingenic_tcu_cevt_cb, IRQF_TIMER,
+			  tcu->name, &tcu->cevt);
+	if (err)
+		goto err_irq_dispose_mapping;
+
+	tcu->cevt.cpumask = cpumask_of(smp_processor_id());
+	tcu->cevt.features = CLOCK_EVT_FEAT_ONESHOT;
+	tcu->cevt.name = tcu->name;
+	tcu->cevt.rating = 200;
+	tcu->cevt.set_state_shutdown = ingenic_tcu_cevt_set_state_shutdown;
+	tcu->cevt.set_next_event = ingenic_tcu_cevt_set_next;
+
+	clockevents_config_and_register(&tcu->cevt, rate, 10, 0xffff);
+
+	return 0;
+
+err_irq_dispose_mapping:
+	irq_dispose_mapping(timer_virq);
+err_clk_disable:
+	clk_disable_unprepare(tcu->timer_clk);
+err_clk_put:
+	clk_put(tcu->timer_clk);
+	return err;
+}
+
+static int __init ingenic_tcu_clocksource_init(struct device_node *np,
+					       struct ingenic_tcu *tcu)
+{
+	unsigned int channel = tcu->cs_channel;
+	struct clocksource *cs = &tcu->cs;
+	unsigned long rate;
+	int err;
+
+	tcu->cs_clk = ingenic_tcu_get_clock(np, channel);
+	if (IS_ERR(tcu->cs_clk))
+		return PTR_ERR(tcu->cs_clk);
+
+	err = clk_prepare_enable(tcu->cs_clk);
+	if (err)
+		goto err_clk_put;
+
+	rate = clk_get_rate(tcu->cs_clk);
+	if (!rate) {
+		err = -EINVAL;
+		goto err_clk_disable;
+	}
+
+	/* Reset channel */
+	regmap_update_bits(tcu->map, TCU_REG_TCSRc(channel),
+			   0xffff & ~TCU_TCSR_RESERVED_BITS, 0);
+
+	/* Reset counter */
+	regmap_write(tcu->map, TCU_REG_TDFRc(channel), 0xffff);
+	regmap_write(tcu->map, TCU_REG_TCNTc(channel), 0);
+
+	/* Enable channel */
+	regmap_write(tcu->map, TCU_REG_TESR, BIT(channel));
+
+	cs->name = "ingenic-timer";
+	cs->rating = 200;
+	cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
+	cs->mask = CLOCKSOURCE_MASK(16);
+	cs->read = ingenic_tcu_timer_cs_read;
+
+	err = clocksource_register_hz(cs, rate);
+	if (err)
+		goto err_clk_disable;
+
+	return 0;
+
+err_clk_disable:
+	clk_disable_unprepare(tcu->cs_clk);
+err_clk_put:
+	clk_put(tcu->cs_clk);
+	return err;
+}
+
+static const struct ingenic_soc_info jz4740_soc_info = {
+	.num_channels = 8,
+};
+
+static const struct ingenic_soc_info jz4725b_soc_info = {
+	.num_channels = 6,
+};
+
+static const struct of_device_id ingenic_tcu_of_match[] = {
+	{ .compatible = "ingenic,jz4740-tcu", .data = &jz4740_soc_info, },
+	{ .compatible = "ingenic,jz4725b-tcu", .data = &jz4725b_soc_info, },
+	{ .compatible = "ingenic,jz4770-tcu", .data = &jz4740_soc_info, },
+	{ /* sentinel */ }
+};
+
+static int __init ingenic_tcu_init(struct device_node *np)
+{
+	const struct of_device_id *id = of_match_node(ingenic_tcu_of_match, np);
+	const struct ingenic_soc_info *soc_info = id->data;
+	struct ingenic_tcu *tcu;
+	struct regmap *map;
+	long rate;
+	int ret;
+
+	of_node_clear_flag(np, OF_POPULATED);
+
+	map = device_node_to_regmap(np);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	tcu = kzalloc(sizeof(*tcu), GFP_KERNEL);
+	if (!tcu)
+		return -ENOMEM;
+
+	/* Enable all TCU channels for PWM use by default except channels 0/1 */
+	tcu->pwm_channels_mask = GENMASK(soc_info->num_channels - 1, 2);
+	of_property_read_u32(np, "ingenic,pwm-channels-mask",
+			     (u32 *)&tcu->pwm_channels_mask);
+
+	/* Verify that we have at least two free channels */
+	if (hweight8(tcu->pwm_channels_mask) > soc_info->num_channels - 2) {
+		pr_crit("%s: Invalid PWM channel mask: 0x%02lx\n", __func__,
+			tcu->pwm_channels_mask);
+		ret = -EINVAL;
+		goto err_free_ingenic_tcu;
+	}
+
+	tcu->map = map;
+	ingenic_tcu = tcu;
+
+	tcu->timer_channel = find_first_zero_bit(&tcu->pwm_channels_mask,
+						 soc_info->num_channels);
+	tcu->cs_channel = find_next_zero_bit(&tcu->pwm_channels_mask,
+					     soc_info->num_channels,
+					     tcu->timer_channel + 1);
+
+	ret = ingenic_tcu_clocksource_init(np, tcu);
+	if (ret) {
+		pr_crit("%s: Unable to init clocksource: %d\n", __func__, ret);
+		goto err_free_ingenic_tcu;
+	}
+
+	ret = ingenic_tcu_timer_init(np, tcu);
+	if (ret)
+		goto err_tcu_clocksource_cleanup;
+
+	/* Register the sched_clock at the end as there's no way to undo it */
+	rate = clk_get_rate(tcu->cs_clk);
+	sched_clock_register(ingenic_tcu_timer_read, 16, rate);
+
+	return 0;
+
+err_tcu_clocksource_cleanup:
+	clocksource_unregister(&tcu->cs);
+	clk_disable_unprepare(tcu->cs_clk);
+	clk_put(tcu->cs_clk);
+err_free_ingenic_tcu:
+	kfree(tcu);
+	return ret;
+}
+
+TIMER_OF_DECLARE(jz4740_tcu_intc,  "ingenic,jz4740-tcu",  ingenic_tcu_init);
+TIMER_OF_DECLARE(jz4725b_tcu_intc, "ingenic,jz4725b-tcu", ingenic_tcu_init);
+TIMER_OF_DECLARE(jz4770_tcu_intc,  "ingenic,jz4770-tcu",  ingenic_tcu_init);
+
+
+static int __init ingenic_tcu_probe(struct platform_device *pdev)
+{
+	platform_set_drvdata(pdev, ingenic_tcu);
+
+	return 0;
+}
+
+static int __maybe_unused ingenic_tcu_suspend(struct device *dev)
+{
+	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
+
+	clk_disable(tcu->cs_clk);
+	clk_disable(tcu->timer_clk);
+	return 0;
+}
+
+static int __maybe_unused ingenic_tcu_resume(struct device *dev)
+{
+	struct ingenic_tcu *tcu = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_enable(tcu->timer_clk);
+	if (ret)
+		return ret;
+
+	ret = clk_enable(tcu->cs_clk);
+	if (ret) {
+		clk_disable(tcu->timer_clk);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct dev_pm_ops __maybe_unused ingenic_tcu_pm_ops = {
+	/* _noirq: We want the TCU clocks to be gated last / ungated first */
+	.suspend_noirq = ingenic_tcu_suspend,
+	.resume_noirq  = ingenic_tcu_resume,
+};
+
+static struct platform_driver ingenic_tcu_driver = {
+	.driver = {
+		.name	= "ingenic-tcu-timer",
+#ifdef CONFIG_PM_SLEEP
+		.pm	= &ingenic_tcu_pm_ops,
+#endif
+		.of_match_table = ingenic_tcu_of_match,
+	},
+};
+builtin_platform_driver_probe(ingenic_tcu_driver, ingenic_tcu_probe);

drivers/dma/Kconfig

···
 	select DMA_ENGINE
 	select DMA_VIRTUAL_CHANNELS
 
-config DMA_JZ4740
-	tristate "JZ4740 DMA support"
-	depends on MACH_JZ4740 || COMPILE_TEST
-	select DMA_ENGINE
-	select DMA_VIRTUAL_CHANNELS
-
 config DMA_JZ4780
 	tristate "JZ4780 DMA support"
 	depends on MIPS || COMPILE_TEST

drivers/dma/Makefile

···
 obj-$(CONFIG_BCM_SBA_RAID) += bcm-sba-raid.o
 obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o
 obj-$(CONFIG_DMA_BCM2835) += bcm2835-dma.o
-obj-$(CONFIG_DMA_JZ4740) += dma-jz4740.o
 obj-$(CONFIG_DMA_JZ4780) += dma-jz4780.o
 obj-$(CONFIG_DMA_SA11X0) += sa11x0-dma.o
 obj-$(CONFIG_DMA_SUN4I) += sun4i-dma.o

drivers/dma/dma-jz4740.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2013, Lars-Peter Clausen <[e-mail]>
- *  JZ4740 DMAC support
- */
-
-#include <linux/dmaengine.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/irq.h>
-#include <linux/clk.h>
-
-#include "virt-dma.h"
-
-#define JZ_DMA_NR_CHANS 6
-
-#define JZ_REG_DMA_SRC_ADDR(x)		(0x00 + (x) * 0x20)
-#define JZ_REG_DMA_DST_ADDR(x)		(0x04 + (x) * 0x20)
-#define JZ_REG_DMA_TRANSFER_COUNT(x)	(0x08 + (x) * 0x20)
-#define JZ_REG_DMA_REQ_TYPE(x)		(0x0C + (x) * 0x20)
-#define JZ_REG_DMA_STATUS_CTRL(x)	(0x10 + (x) * 0x20)
-#define JZ_REG_DMA_CMD(x)		(0x14 + (x) * 0x20)
-#define JZ_REG_DMA_DESC_ADDR(x)		(0x18 + (x) * 0x20)
-
-#define JZ_REG_DMA_CTRL			0x300
-#define JZ_REG_DMA_IRQ			0x304
-#define JZ_REG_DMA_DOORBELL		0x308
-#define JZ_REG_DMA_DOORBELL_SET		0x30C
-
-#define JZ_DMA_STATUS_CTRL_NO_DESC		BIT(31)
-#define JZ_DMA_STATUS_CTRL_DESC_INV		BIT(6)
-#define JZ_DMA_STATUS_CTRL_ADDR_ERR		BIT(4)
-#define JZ_DMA_STATUS_CTRL_TRANSFER_DONE	BIT(3)
-#define JZ_DMA_STATUS_CTRL_HALT			BIT(2)
-#define JZ_DMA_STATUS_CTRL_COUNT_TERMINATE	BIT(1)
-#define JZ_DMA_STATUS_CTRL_ENABLE		BIT(0)
-
-#define JZ_DMA_CMD_SRC_INC			BIT(23)
-#define JZ_DMA_CMD_DST_INC			BIT(22)
-#define JZ_DMA_CMD_RDIL_MASK			(0xf << 16)
-#define JZ_DMA_CMD_SRC_WIDTH_MASK		(0x3 << 14)
-#define JZ_DMA_CMD_DST_WIDTH_MASK		(0x3 << 12)
-#define JZ_DMA_CMD_INTERVAL_LENGTH_MASK		(0x7 << 8)
-#define JZ_DMA_CMD_BLOCK_MODE			BIT(7)
-#define JZ_DMA_CMD_DESC_VALID			BIT(4)
-#define JZ_DMA_CMD_DESC_VALID_MODE		BIT(3)
-#define JZ_DMA_CMD_VALID_IRQ_ENABLE		BIT(2)
-#define JZ_DMA_CMD_TRANSFER_IRQ_ENABLE		BIT(1)
-#define JZ_DMA_CMD_LINK_ENABLE			BIT(0)
-
-#define JZ_DMA_CMD_FLAGS_OFFSET 22
-#define JZ_DMA_CMD_RDIL_OFFSET 16
-#define JZ_DMA_CMD_SRC_WIDTH_OFFSET 14
-#define JZ_DMA_CMD_DST_WIDTH_OFFSET 12
-#define JZ_DMA_CMD_TRANSFER_SIZE_OFFSET 8
-#define JZ_DMA_CMD_MODE_OFFSET 7
-
-#define JZ_DMA_CTRL_PRIORITY_MASK		(0x3 << 8)
-#define JZ_DMA_CTRL_HALT			BIT(3)
-#define JZ_DMA_CTRL_ADDRESS_ERROR		BIT(2)
-#define JZ_DMA_CTRL_ENABLE			BIT(0)
-
-enum jz4740_dma_width {
-	JZ4740_DMA_WIDTH_32BIT	= 0,
-	JZ4740_DMA_WIDTH_8BIT	= 1,
-	JZ4740_DMA_WIDTH_16BIT	= 2,
-};
-
-enum jz4740_dma_transfer_size {
-	JZ4740_DMA_TRANSFER_SIZE_4BYTE	= 0,
-	JZ4740_DMA_TRANSFER_SIZE_1BYTE	= 1,
-	JZ4740_DMA_TRANSFER_SIZE_2BYTE	= 2,
-	JZ4740_DMA_TRANSFER_SIZE_16BYTE = 3,
-	JZ4740_DMA_TRANSFER_SIZE_32BYTE = 4,
-};
-
-enum jz4740_dma_flags {
-	JZ4740_DMA_SRC_AUTOINC = 0x2,
-	JZ4740_DMA_DST_AUTOINC = 0x1,
-};
-
-enum jz4740_dma_mode {
-	JZ4740_DMA_MODE_SINGLE	= 0,
-	JZ4740_DMA_MODE_BLOCK	= 1,
-};
-
-struct jz4740_dma_sg {
-	dma_addr_t addr;
-	unsigned int len;
-};
-
-struct jz4740_dma_desc {
-	struct virt_dma_desc vdesc;
-
-	enum dma_transfer_direction direction;
-	bool cyclic;
-
-	unsigned int num_sgs;
-	struct jz4740_dma_sg sg[];
-};
-
-struct jz4740_dmaengine_chan {
-	struct virt_dma_chan vchan;
-	unsigned int id;
-	struct dma_slave_config config;
-
-	dma_addr_t fifo_addr;
-	unsigned int transfer_shift;
-
-	struct jz4740_dma_desc *desc;
-	unsigned int next_sg;
-};
-
-struct jz4740_dma_dev {
-	struct dma_device ddev;
-	void __iomem *base;
-	struct clk *clk;
-
-	struct jz4740_dmaengine_chan chan[JZ_DMA_NR_CHANS];
-};
-
-static struct jz4740_dma_dev *jz4740_dma_chan_get_dev(
-	struct jz4740_dmaengine_chan *chan)
-{
-	return container_of(chan->vchan.chan.device, struct jz4740_dma_dev,
-		ddev);
-}
-
-static struct jz4740_dmaengine_chan *to_jz4740_dma_chan(struct dma_chan *c)
-{
-	return container_of(c, struct jz4740_dmaengine_chan, vchan.chan);
-}
-
-static struct jz4740_dma_desc *to_jz4740_dma_desc(struct virt_dma_desc *vdesc)
-{
-	return container_of(vdesc, struct jz4740_dma_desc, vdesc);
-}
-
-static inline uint32_t jz4740_dma_read(struct jz4740_dma_dev *dmadev,
-	unsigned int reg)
-{
-	return readl(dmadev->base + reg);
-}
-
-static inline void jz4740_dma_write(struct jz4740_dma_dev *dmadev,
-	unsigned reg, uint32_t val)
-{
-	writel(val, dmadev->base + reg);
-}
-
-static inline void jz4740_dma_write_mask(struct jz4740_dma_dev *dmadev,
-	unsigned int reg, uint32_t val, uint32_t mask)
-{
-	uint32_t tmp;
-
-	tmp = jz4740_dma_read(dmadev, reg);
-	tmp &= ~mask;
-	tmp |= val;
-	jz4740_dma_write(dmadev, reg, tmp);
-}
-
-static struct jz4740_dma_desc *jz4740_dma_alloc_desc(unsigned int num_sgs)
-{
-	return kzalloc(sizeof(struct jz4740_dma_desc) +
-		sizeof(struct jz4740_dma_sg) * num_sgs, GFP_ATOMIC);
-}
-
-static enum jz4740_dma_width jz4740_dma_width(enum dma_slave_buswidth width)
-{
-	switch (width) {
-	case DMA_SLAVE_BUSWIDTH_1_BYTE:
-		return JZ4740_DMA_WIDTH_8BIT;
-	case DMA_SLAVE_BUSWIDTH_2_BYTES:
-		return JZ4740_DMA_WIDTH_16BIT;
-	case DMA_SLAVE_BUSWIDTH_4_BYTES:
-		return JZ4740_DMA_WIDTH_32BIT;
-	default:
-		return JZ4740_DMA_WIDTH_32BIT;
-	}
-}
-
-static enum jz4740_dma_transfer_size jz4740_dma_maxburst(u32 maxburst)
-{
-	if (maxburst <= 1)
-		return JZ4740_DMA_TRANSFER_SIZE_1BYTE;
-	else if (maxburst <= 3)
-		return JZ4740_DMA_TRANSFER_SIZE_2BYTE;
-	else if (maxburst <= 15)
-		return JZ4740_DMA_TRANSFER_SIZE_4BYTE;
-	else if (maxburst <= 31)
-		return JZ4740_DMA_TRANSFER_SIZE_16BYTE;
-
-	return JZ4740_DMA_TRANSFER_SIZE_32BYTE;
-}
-
-static int jz4740_dma_slave_config_write(struct dma_chan *c,
-				   struct dma_slave_config *config,
-				   enum dma_transfer_direction direction)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
-	enum jz4740_dma_width src_width;
-	enum jz4740_dma_width dst_width;
-	enum jz4740_dma_transfer_size transfer_size;
-	enum jz4740_dma_flags flags;
-	uint32_t cmd;
-
-	switch (direction) {
-	case DMA_MEM_TO_DEV:
-		flags = JZ4740_DMA_SRC_AUTOINC;
-		transfer_size = jz4740_dma_maxburst(config->dst_maxburst);
-		chan->fifo_addr = config->dst_addr;
-		break;
-	case DMA_DEV_TO_MEM:
-		flags = JZ4740_DMA_DST_AUTOINC;
-		transfer_size = jz4740_dma_maxburst(config->src_maxburst);
-		chan->fifo_addr = config->src_addr;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	src_width = jz4740_dma_width(config->src_addr_width);
-	dst_width = jz4740_dma_width(config->dst_addr_width);
-
-	switch (transfer_size) {
-	case JZ4740_DMA_TRANSFER_SIZE_2BYTE:
-		chan->transfer_shift = 1;
-		break;
-	case JZ4740_DMA_TRANSFER_SIZE_4BYTE:
-		chan->transfer_shift = 2;
-		break;
-	case JZ4740_DMA_TRANSFER_SIZE_16BYTE:
-		chan->transfer_shift = 4;
-		break;
-	case JZ4740_DMA_TRANSFER_SIZE_32BYTE:
-		chan->transfer_shift = 5;
-		break;
-	default:
-		chan->transfer_shift = 0;
-		break;
-	}
-
-	cmd = flags << JZ_DMA_CMD_FLAGS_OFFSET;
-	cmd |= src_width << JZ_DMA_CMD_SRC_WIDTH_OFFSET;
-	cmd |= dst_width << JZ_DMA_CMD_DST_WIDTH_OFFSET;
-	cmd |= transfer_size << JZ_DMA_CMD_TRANSFER_SIZE_OFFSET;
-	cmd |= JZ4740_DMA_MODE_SINGLE << JZ_DMA_CMD_MODE_OFFSET;
-	cmd |= JZ_DMA_CMD_TRANSFER_IRQ_ENABLE;
-
-	jz4740_dma_write(dmadev, JZ_REG_DMA_CMD(chan->id), cmd);
-	jz4740_dma_write(dmadev, JZ_REG_DMA_STATUS_CTRL(chan->id), 0);
-	jz4740_dma_write(dmadev, JZ_REG_DMA_REQ_TYPE(chan->id),
-		config->slave_id);
-
-	return 0;
-}
-
-static int jz4740_dma_slave_config(struct dma_chan *c,
-				   struct dma_slave_config *config)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-
-	memcpy(&chan->config, config, sizeof(*config));
-	return 0;
-}
-
-static int jz4740_dma_terminate_all(struct dma_chan *c)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
-	unsigned long flags;
-	LIST_HEAD(head);
-
-	spin_lock_irqsave(&chan->vchan.lock, flags);
-	jz4740_dma_write_mask(dmadev, JZ_REG_DMA_STATUS_CTRL(chan->id), 0,
-			JZ_DMA_STATUS_CTRL_ENABLE);
-	chan->desc = NULL;
-	vchan_get_all_descriptors(&chan->vchan, &head);
-	spin_unlock_irqrestore(&chan->vchan.lock, flags);
-
-	vchan_dma_desc_free_list(&chan->vchan, &head);
-
-	return 0;
-}
-
-static int jz4740_dma_start_transfer(struct jz4740_dmaengine_chan *chan)
-{
-	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
-	dma_addr_t src_addr, dst_addr;
-	struct virt_dma_desc *vdesc;
-	struct jz4740_dma_sg *sg;
-
-	jz4740_dma_write_mask(dmadev, JZ_REG_DMA_STATUS_CTRL(chan->id), 0,
-			JZ_DMA_STATUS_CTRL_ENABLE);
-
-	if (!chan->desc) {
-		vdesc = vchan_next_desc(&chan->vchan);
-		if (!vdesc)
-			return 0;
-		chan->desc = to_jz4740_dma_desc(vdesc);
-		chan->next_sg = 0;
-	}
-
-	if (chan->next_sg == chan->desc->num_sgs)
-		chan->next_sg = 0;
-
-	sg = &chan->desc->sg[chan->next_sg];
-
-	if (chan->desc->direction == DMA_MEM_TO_DEV) {
-		src_addr = sg->addr;
-		dst_addr = chan->fifo_addr;
-	} else {
-		src_addr = chan->fifo_addr;
-		dst_addr = sg->addr;
-	}
-	jz4740_dma_write(dmadev, JZ_REG_DMA_SRC_ADDR(chan->id), src_addr);
-	jz4740_dma_write(dmadev, JZ_REG_DMA_DST_ADDR(chan->id), dst_addr);
-	jz4740_dma_write(dmadev, JZ_REG_DMA_TRANSFER_COUNT(chan->id),
-			sg->len >> chan->transfer_shift);
-
-	chan->next_sg++;
-
-	jz4740_dma_write_mask(dmadev, JZ_REG_DMA_STATUS_CTRL(chan->id),
-			JZ_DMA_STATUS_CTRL_NO_DESC | JZ_DMA_STATUS_CTRL_ENABLE,
-			JZ_DMA_STATUS_CTRL_HALT | JZ_DMA_STATUS_CTRL_NO_DESC |
-			JZ_DMA_STATUS_CTRL_ENABLE);
-
-	jz4740_dma_write_mask(dmadev, JZ_REG_DMA_CTRL,
-			JZ_DMA_CTRL_ENABLE,
-			JZ_DMA_CTRL_HALT | JZ_DMA_CTRL_ENABLE);
-
-	return 0;
-}
-
-static void jz4740_dma_chan_irq(struct jz4740_dmaengine_chan *chan)
-{
-	spin_lock(&chan->vchan.lock);
-	if (chan->desc) {
-		if (chan->desc->cyclic) {
-			vchan_cyclic_callback(&chan->desc->vdesc);
-		} else {
-			if (chan->next_sg == chan->desc->num_sgs) {
-				list_del(&chan->desc->vdesc.node);
-				vchan_cookie_complete(&chan->desc->vdesc);
-				chan->desc = NULL;
-			}
-		}
-	}
-	jz4740_dma_start_transfer(chan);
-	spin_unlock(&chan->vchan.lock);
-}
-
-static irqreturn_t jz4740_dma_irq(int irq, void *devid)
-{
-	struct jz4740_dma_dev *dmadev = devid;
-	uint32_t irq_status;
-	unsigned int i;
-
-	irq_status = readl(dmadev->base + JZ_REG_DMA_IRQ);
-
-	for (i = 0; i < 6; ++i) {
-		if (irq_status & (1 << i)) {
-			jz4740_dma_write_mask(dmadev,
-				JZ_REG_DMA_STATUS_CTRL(i), 0,
-				JZ_DMA_STATUS_CTRL_ENABLE |
-				JZ_DMA_STATUS_CTRL_TRANSFER_DONE);
-
-			jz4740_dma_chan_irq(&dmadev->chan[i]);
-		}
-	}
-
-	return IRQ_HANDLED;
-}
-
-static void jz4740_dma_issue_pending(struct dma_chan *c)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	unsigned long flags;
-
-	spin_lock_irqsave(&chan->vchan.lock, flags);
-	if (vchan_issue_pending(&chan->vchan) && !chan->desc)
-		jz4740_dma_start_transfer(chan);
-	spin_unlock_irqrestore(&chan->vchan.lock, flags);
-}
-
-static struct dma_async_tx_descriptor *jz4740_dma_prep_slave_sg(
-	struct dma_chan *c, struct scatterlist *sgl,
-	unsigned int sg_len, enum dma_transfer_direction direction,
-	unsigned long flags, void *context)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	struct jz4740_dma_desc *desc;
-	struct scatterlist *sg;
-	unsigned int i;
-
-	desc = jz4740_dma_alloc_desc(sg_len);
-	if (!desc)
-		return NULL;
-
-	for_each_sg(sgl, sg, sg_len, i) {
-		desc->sg[i].addr = sg_dma_address(sg);
-		desc->sg[i].len = sg_dma_len(sg);
-	}
-
-	desc->num_sgs = sg_len;
-	desc->direction = direction;
-	desc->cyclic = false;
-
-	jz4740_dma_slave_config_write(c, &chan->config, direction);
-
-	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
-}
-
-static struct dma_async_tx_descriptor *jz4740_dma_prep_dma_cyclic(
-	struct dma_chan *c, dma_addr_t buf_addr, size_t buf_len,
-	size_t period_len, enum dma_transfer_direction direction,
-	unsigned long flags)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	struct jz4740_dma_desc *desc;
-	unsigned int num_periods, i;
-
-	if (buf_len % period_len)
-		return NULL;
-
-	num_periods = buf_len / period_len;
-
-	desc = jz4740_dma_alloc_desc(num_periods);
-	if (!desc)
-		return NULL;
-
-	for (i = 0; i < num_periods; i++) {
-		desc->sg[i].addr = buf_addr;
-		desc->sg[i].len = period_len;
-		buf_addr += period_len;
-	}
-
-	desc->num_sgs = num_periods;
-	desc->direction = direction;
-	desc->cyclic = true;
-
-	jz4740_dma_slave_config_write(c, &chan->config, direction);
-
-	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
-}
-
-static size_t jz4740_dma_desc_residue(struct jz4740_dmaengine_chan *chan,
-	struct jz4740_dma_desc *desc, unsigned int next_sg)
-{
-	struct jz4740_dma_dev *dmadev = jz4740_dma_chan_get_dev(chan);
-	unsigned int residue, count;
-	unsigned int i;
-
-	residue = 0;
-
-	for (i = next_sg; i < desc->num_sgs; i++)
-		residue += desc->sg[i].len;
-
-	if (next_sg != 0) {
-		count = jz4740_dma_read(dmadev,
-			JZ_REG_DMA_TRANSFER_COUNT(chan->id));
-		residue += count << chan->transfer_shift;
-	}
-
-	return residue;
-}
-
-static enum dma_status jz4740_dma_tx_status(struct dma_chan *c,
-	dma_cookie_t cookie, struct dma_tx_state *state)
-{
-	struct jz4740_dmaengine_chan *chan = to_jz4740_dma_chan(c);
-	struct virt_dma_desc *vdesc;
-	enum dma_status status;
-	unsigned long flags;
-
-	status = dma_cookie_status(c, cookie, state);
-	if (status == DMA_COMPLETE || !state)
-		return status;
-
-	spin_lock_irqsave(&chan->vchan.lock, flags);
-	vdesc = vchan_find_desc(&chan->vchan, cookie);
-	if (cookie == chan->desc->vdesc.tx.cookie) {
-		state->residue = jz4740_dma_desc_residue(chan, chan->desc,
-				chan->next_sg);
-	} else if (vdesc) {
-		state->residue = jz4740_dma_desc_residue(chan,
-				to_jz4740_dma_desc(vdesc), 0);
-	} else {
-		state->residue = 0;
-	}
-	spin_unlock_irqrestore(&chan->vchan.lock, flags);
-
-	return status;
-}
-
-static void jz4740_dma_free_chan_resources(struct dma_chan *c)
-{
-	vchan_free_chan_resources(to_virt_chan(c));
-}
-
-static void jz4740_dma_desc_free(struct virt_dma_desc *vdesc)
-{
-	kfree(container_of(vdesc, struct jz4740_dma_desc, vdesc));
-}
-
-#define JZ4740_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
-	BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
-
-static int jz4740_dma_probe(struct platform_device *pdev)
-{
-	struct jz4740_dmaengine_chan *chan;
-	struct jz4740_dma_dev *dmadev;
-	struct dma_device *dd;
-	unsigned int i;
-	struct resource *res;
-	int ret;
-	int irq;
-
-	dmadev = devm_kzalloc(&pdev->dev, sizeof(*dmadev), GFP_KERNEL);
-	if (!dmadev)
-		return -EINVAL;
-
-	dd = &dmadev->ddev;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dmadev->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(dmadev->base))
-		return PTR_ERR(dmadev->base);
-
-	dmadev->clk = clk_get(&pdev->dev, "dma");
-	if (IS_ERR(dmadev->clk))
-		return PTR_ERR(dmadev->clk);
-
-	clk_prepare_enable(dmadev->clk);
-
-	dma_cap_set(DMA_SLAVE, dd->cap_mask);
-	dma_cap_set(DMA_CYCLIC, dd->cap_mask);
-	dd->device_free_chan_resources = jz4740_dma_free_chan_resources;
-	dd->device_tx_status = jz4740_dma_tx_status;
-	dd->device_issue_pending = jz4740_dma_issue_pending;
-	dd->device_prep_slave_sg = jz4740_dma_prep_slave_sg;
-	dd->device_prep_dma_cyclic = jz4740_dma_prep_dma_cyclic;
-	dd->device_config = jz4740_dma_slave_config;
-	dd->device_terminate_all = jz4740_dma_terminate_all;
-	dd->src_addr_widths = JZ4740_DMA_BUSWIDTHS;
-	dd->dst_addr_widths = JZ4740_DMA_BUSWIDTHS;
-	dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
-	dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
-	dd->dev = &pdev->dev;
-	INIT_LIST_HEAD(&dd->channels);
-
-	for (i = 0; i < JZ_DMA_NR_CHANS; i++) {
-		chan = &dmadev->chan[i];
-		chan->id = i;
-		chan->vchan.desc_free = jz4740_dma_desc_free;
-		vchan_init(&chan->vchan, dd);
-	}
-
-	ret = dma_async_device_register(dd);
-	if (ret)
-		goto err_clk;
-
-	irq = platform_get_irq(pdev, 0);
-	ret = request_irq(irq, jz4740_dma_irq, 0, dev_name(&pdev->dev), dmadev);
-	if (ret)
-		goto err_unregister;
-
-	platform_set_drvdata(pdev, dmadev);
-
-	return 0;
-
-err_unregister:
-	dma_async_device_unregister(dd);
-err_clk:
-	clk_disable_unprepare(dmadev->clk);
-	return ret;
-}
-
-static void jz4740_cleanup_vchan(struct dma_device *dmadev)
-{
-	struct jz4740_dmaengine_chan *chan, *_chan;
-
-	list_for_each_entry_safe(chan, _chan,
-				&dmadev->channels, vchan.chan.device_node) {
-		list_del(&chan->vchan.chan.device_node);
-		tasklet_kill(&chan->vchan.task);
-	}
-}
-
-
-static int jz4740_dma_remove(struct platform_device *pdev)
-{
-	struct jz4740_dma_dev *dmadev = platform_get_drvdata(pdev);
-	int irq = platform_get_irq(pdev, 0);
-
-	free_irq(irq, dmadev);
-
-	jz4740_cleanup_vchan(&dmadev->ddev);
-	dma_async_device_unregister(&dmadev->ddev);
-	clk_disable_unprepare(dmadev->clk);
-
-	return 0;
-}
-
-static struct platform_driver jz4740_dma_driver = {
-	.probe = jz4740_dma_probe,
-	.remove = jz4740_dma_remove,
-	.driver = {
-		.name = "jz4740-dma",
-	},
-};
-module_platform_driver(jz4740_dma_driver);
-
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_DESCRIPTION("JZ4740 DMA driver");
-MODULE_LICENSE("GPL v2");

drivers/firmware/broadcom/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
 config BCM47XX_NVRAM
 	bool "Broadcom NVRAM driver"
-	depends on BCM47XX || ARCH_BCM_5301X
+	depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
 	help
 	  Broadcom home routers contain flash partition called "nvram" with all
 	  important hardware configuration as well as some minor user setup.

drivers/firmware/broadcom/bcm47xx_nvram.c

···
 		nvram_len = size;
 	}
 	if (nvram_len >= NVRAM_SPACE) {
-		pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
+		pr_err("nvram on flash (%zu bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
 		       nvram_len, NVRAM_SPACE - 1);
 		nvram_len = NVRAM_SPACE - 1;
 	}
···
 	    header.len > sizeof(header)) {
 		nvram_len = header.len;
 		if (nvram_len >= NVRAM_SPACE) {
-			pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
+			pr_err("nvram on flash (%zu bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n",
 				header.len, NVRAM_SPACE);
 			nvram_len = NVRAM_SPACE - 1;
 		}

drivers/hwmon/Kconfig

···
 	  This driver can also be built as a module. If so, the module
 	  will be called it87.
 
-config SENSORS_JZ4740
-	tristate "Ingenic JZ4740 SoC ADC driver"
-	depends on MACH_JZ4740 && MFD_JZ4740_ADC
-	help
-	  If you say yes here you get support for reading adc values from the ADCIN
-	  pin on Ingenic JZ4740 SoC based boards.
-
-	  This driver can also be built as a module. If so, the module will be
-	  called jz4740-hwmon.
-
 config SENSORS_JC42
 	tristate "JEDEC JC42.4 compliant memory module temperature sensors"
 	depends on I2C

drivers/hwmon/Makefile

···
 obj-$(CONFIG_SENSORS_INA3221)	+= ina3221.o
 obj-$(CONFIG_SENSORS_IT87)	+= it87.o
 obj-$(CONFIG_SENSORS_JC42)	+= jc42.o
-obj-$(CONFIG_SENSORS_JZ4740)	+= jz4740-hwmon.o
 obj-$(CONFIG_SENSORS_K8TEMP)	+= k8temp.o
 obj-$(CONFIG_SENSORS_K10TEMP)	+= k10temp.o
 obj-$(CONFIG_SENSORS_LINEAGE)	+= lineage-pem.o

drivers/hwmon/jz4740-hwmon.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2009-2010, Lars-Peter Clausen <[e-mail]>
- * JZ4740 SoC HWMON driver
- */
-
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-
-#include <linux/completion.h>
-#include <linux/mfd/core.h>
-
-#include <linux/hwmon.h>
-
-struct jz4740_hwmon {
-	void __iomem *base;
-	int irq;
-	const struct mfd_cell *cell;
-	struct platform_device *pdev;
-	struct completion read_completion;
-	struct mutex lock;
-};
-
-static irqreturn_t jz4740_hwmon_irq(int irq, void *data)
-{
-	struct jz4740_hwmon *hwmon = data;
-
-	complete(&hwmon->read_completion);
-	return IRQ_HANDLED;
-}
-
-static ssize_t in0_input_show(struct device *dev,
-			      struct device_attribute *dev_attr, char *buf)
-{
-	struct jz4740_hwmon *hwmon = dev_get_drvdata(dev);
-	struct platform_device *pdev = hwmon->pdev;
-	struct completion *completion = &hwmon->read_completion;
-	long t;
-	unsigned long val;
-	int ret;
-
-	mutex_lock(&hwmon->lock);
-
-	reinit_completion(completion);
-
-	enable_irq(hwmon->irq);
-	hwmon->cell->enable(pdev);
-
-	t = wait_for_completion_interruptible_timeout(completion, HZ);
-
-	if (t > 0) {
-		val = readw(hwmon->base) & 0xfff;
-		val = (val * 3300) >> 12;
-		ret = sprintf(buf, "%lu\n", val);
-	} else {
-		ret = t ? t : -ETIMEDOUT;
-	}
-
-	hwmon->cell->disable(pdev);
-	disable_irq(hwmon->irq);
-
-	mutex_unlock(&hwmon->lock);
-
-	return ret;
-}
-
-static DEVICE_ATTR_RO(in0_input);
-
-static struct attribute *jz4740_attrs[] = {
-	&dev_attr_in0_input.attr,
-	NULL
-};
-
-ATTRIBUTE_GROUPS(jz4740);
-
-static int jz4740_hwmon_probe(struct platform_device *pdev)
-{
-	int ret;
-	struct device *dev = &pdev->dev;
-	struct jz4740_hwmon *hwmon;
-	struct device *hwmon_dev;
-
-	hwmon = devm_kzalloc(dev, sizeof(*hwmon), GFP_KERNEL);
-	if (!hwmon)
-		return -ENOMEM;
-
-	hwmon->cell = mfd_get_cell(pdev);
-
-	hwmon->irq = platform_get_irq(pdev, 0);
-	if (hwmon->irq < 0) {
-		dev_err(&pdev->dev, "Failed to get platform irq: %d\n",
-			hwmon->irq);
-		return hwmon->irq;
-	}
-
-	hwmon->base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(hwmon->base))
-		return PTR_ERR(hwmon->base);
-
-	hwmon->pdev = pdev;
-	init_completion(&hwmon->read_completion);
-	mutex_init(&hwmon->lock);
-
-	ret = devm_request_irq(dev, hwmon->irq, jz4740_hwmon_irq, 0,
-			       pdev->name, hwmon);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-		return ret;
-	}
-	disable_irq(hwmon->irq);
-
-	hwmon_dev = devm_hwmon_device_register_with_groups(dev, "jz4740", hwmon,
-							   jz4740_groups);
-	return PTR_ERR_OR_ZERO(hwmon_dev);
-}
-
-static struct platform_driver jz4740_hwmon_driver = {
-	.probe	= jz4740_hwmon_probe,
-	.driver = {
-		.name = "jz4740-hwmon",
-	},
-};
-
-module_platform_driver(jz4740_hwmon_driver);
-
-MODULE_DESCRIPTION("JZ4740 SoC HWMON driver");
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:jz4740-hwmon");

drivers/irqchip/Kconfig

···
 	depends on MACH_INGENIC
 	default y
 
+config INGENIC_TCU_IRQ
+	bool "Ingenic JZ47xx TCU interrupt controller"
+	default MACH_INGENIC
+	depends on MIPS || COMPILE_TEST
+	select MFD_SYSCON
+	select GENERIC_IRQ_CHIP
+	help
+	  Support for interrupts in the Timer/Counter Unit (TCU) of the Ingenic
+	  JZ47xx SoCs.
+
+	  If unsure, say N.
+
 config RENESAS_H8300H_INTC
         bool
 	select IRQ_DOMAIN

drivers/irqchip/Makefile

···
 obj-$(CONFIG_RENESAS_H8S_INTC)		+= irq-renesas-h8s.o
 obj-$(CONFIG_ARCH_SA1100)		+= irq-sa11x0.o
 obj-$(CONFIG_INGENIC_IRQ)		+= irq-ingenic.o
+obj-$(CONFIG_INGENIC_TCU_IRQ)		+= irq-ingenic-tcu.o
 obj-$(CONFIG_IMX_GPCV2)			+= irq-imx-gpcv2.o
 obj-$(CONFIG_PIC32_EVIC)		+= irq-pic32-evic.o
 obj-$(CONFIG_MSCC_OCELOT_IRQ)		+= irq-mscc-ocelot.o

drivers/irqchip/irq-ingenic-tcu.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * JZ47xx SoCs TCU IRQ driver
+ * Copyright (C) 2019 Paul Cercueil <[e-mail]>
+ */
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/mfd/ingenic-tcu.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+
+struct ingenic_tcu {
+	struct regmap *map;
+	struct clk *clk;
+	struct irq_domain *domain;
+	unsigned int nb_parent_irqs;
+	u32 parent_irqs[3];
+};
+
+static void ingenic_tcu_intc_cascade(struct irq_desc *desc)
+{
+	struct irq_chip *irq_chip = irq_data_get_irq_chip(&desc->irq_data);
+	struct irq_domain *domain = irq_desc_get_handler_data(desc);
+	struct irq_chip_generic *gc = irq_get_domain_generic_chip(domain, 0);
+	struct regmap *map = gc->private;
+	uint32_t irq_reg, irq_mask;
+	unsigned int i;
+
+	regmap_read(map, TCU_REG_TFR, &irq_reg);
+	regmap_read(map, TCU_REG_TMR, &irq_mask);
+
+	chained_irq_enter(irq_chip, desc);
+
+	irq_reg &= ~irq_mask;
+
+	for_each_set_bit(i, (unsigned long *)&irq_reg, 32)
+		generic_handle_irq(irq_linear_revmap(domain, i));
+
+	chained_irq_exit(irq_chip, desc);
+}
+
+static void ingenic_tcu_gc_unmask_enable_reg(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = irq_data_get_chip_type(d);
+	struct regmap *map = gc->private;
+	u32 mask = d->mask;
+
+	irq_gc_lock(gc);
+	regmap_write(map, ct->regs.ack, mask);
+	regmap_write(map, ct->regs.enable, mask);
+	*ct->mask_cache |= mask;
+	irq_gc_unlock(gc);
+}
+
+static void ingenic_tcu_gc_mask_disable_reg(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = irq_data_get_chip_type(d);
+	struct regmap *map = gc->private;
+	u32 mask = d->mask;
+
+	irq_gc_lock(gc);
+	regmap_write(map, ct->regs.disable, mask);
+	*ct->mask_cache &= ~mask;
+	irq_gc_unlock(gc);
+}
+
+static void ingenic_tcu_gc_mask_disable_reg_and_ack(struct irq_data *d)
+{
+	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+	struct irq_chip_type *ct = irq_data_get_chip_type(d);
+	struct regmap *map = gc->private;
+	u32 mask = d->mask;
+
+	irq_gc_lock(gc);
+	regmap_write(map, ct->regs.ack, mask);
+	regmap_write(map, ct->regs.disable, mask);
+	irq_gc_unlock(gc);
+}
+
+static int __init ingenic_tcu_irq_init(struct device_node *np,
+				       struct device_node *parent)
+{
+	struct irq_chip_generic *gc;
+	struct irq_chip_type *ct;
+	struct ingenic_tcu *tcu;
+	struct regmap *map;
+	unsigned int i;
+	int ret, irqs;
+
+	map = device_node_to_regmap(np);
+	if (IS_ERR(map))
+		return PTR_ERR(map);
+
+	tcu = kzalloc(sizeof(*tcu), GFP_KERNEL);
+	if (!tcu)
+		return -ENOMEM;
+
+	tcu->map = map;
+
+	irqs = of_property_count_elems_of_size(np, "interrupts", sizeof(u32));
+	if (irqs < 0 || irqs > ARRAY_SIZE(tcu->parent_irqs)) {
+		pr_crit("%s: Invalid 'interrupts' property\n", __func__);
+		ret = -EINVAL;
+		goto err_free_tcu;
+	}
+
+	tcu->nb_parent_irqs = irqs;
+
+	tcu->domain = irq_domain_add_linear(np, 32, &irq_generic_chip_ops,
+					    NULL);
+	if (!tcu->domain) {
+		ret = -ENOMEM;
+		goto err_free_tcu;
+	}
+
+	ret = irq_alloc_domain_generic_chips(tcu->domain, 32, 1, "TCU",
+					     handle_level_irq, 0,
+					     IRQ_NOPROBE | IRQ_LEVEL, 0);
+	if (ret) {
+		pr_crit("%s: Invalid 'interrupts' property\n", __func__);
+		goto out_domain_remove;
+	}
+
+	gc = irq_get_domain_generic_chip(tcu->domain, 0);
+	ct = gc->chip_types;
+
+	gc->wake_enabled = IRQ_MSK(32);
+	gc->private = tcu->map;
+
+	ct->regs.disable = TCU_REG_TMSR;
+	ct->regs.enable = TCU_REG_TMCR;
+	ct->regs.ack = TCU_REG_TFCR;
+	ct->chip.irq_unmask = ingenic_tcu_gc_unmask_enable_reg;
+	ct->chip.irq_mask = ingenic_tcu_gc_mask_disable_reg;
+	ct->chip.irq_mask_ack = ingenic_tcu_gc_mask_disable_reg_and_ack;
+	ct->chip.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE;
+
+	/* Mask all IRQs by default */
+	regmap_write(tcu->map, TCU_REG_TMSR, IRQ_MSK(32));
+
+	/*
+	 * On JZ4740, timer 0 and timer 1 have their own interrupt line;
+	 * timers 2-7 share one interrupt.
+	 * On SoCs >= JZ4770, timer 5 has its own interrupt line;
+	 * timers 0-4 and 6-7 share one single interrupt.
+	 *
+	 * To keep things simple, we just register the same handler to
+	 * all parent interrupts. The handler will properly detect which
+	 * channel fired the interrupt.
+	 */
+	for (i = 0; i < irqs; i++) {
+		tcu->parent_irqs[i] = irq_of_parse_and_map(np, i);
+		if (!tcu->parent_irqs[i]) {
+			ret = -EINVAL;
+			goto out_unmap_irqs;
+		}
+
+		irq_set_chained_handler_and_data(tcu->parent_irqs[i],
+						 ingenic_tcu_intc_cascade,
+						 tcu->domain);
+	}
+
+	return 0;
+
+out_unmap_irqs:
+	for (; i > 0; i--)
+		irq_dispose_mapping(tcu->parent_irqs[i - 1]);
+out_domain_remove:
+	irq_domain_remove(tcu->domain);
+err_free_tcu:
+	kfree(tcu);
+	return ret;
+}
+IRQCHIP_DECLARE(jz4740_tcu_irq, "ingenic,jz4740-tcu", ingenic_tcu_irq_init);
+IRQCHIP_DECLARE(jz4725b_tcu_irq, "ingenic,jz4725b-tcu", ingenic_tcu_irq_init);
+IRQCHIP_DECLARE(jz4770_tcu_irq, "ingenic,jz4770-tcu", ingenic_tcu_irq_init);

drivers/mfd/syscon.c

···
 	.reg_stride = 4,
 };
 
-static struct syscon *of_syscon_register(struct device_node *np)
+static struct syscon *of_syscon_register(struct device_node *np, bool check_clk)
 {
 	struct clk *clk;
 	struct syscon *syscon;
···
 	int ret;
 	struct regmap_config syscon_config = syscon_regmap_config;
 	struct resource res;
-
-	if (!of_device_is_compatible(np, "syscon"))
-		return ERR_PTR(-EINVAL);
 
 	syscon = kzalloc(sizeof(*syscon), GFP_KERNEL);
 	if (!syscon)
···
 		goto err_regmap;
 	}
 
-	clk = of_clk_get(np, 0);
-	if (IS_ERR(clk)) {
-		ret = PTR_ERR(clk);
-		/* clock is optional */
-		if (ret != -ENOENT)
-			goto err_clk;
-	} else {
-		ret = regmap_mmio_attach_clk(regmap, clk);
-		if (ret)
-			goto err_attach;
+	if (check_clk) {
+		clk = of_clk_get(np, 0);
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			/* clock is optional */
+			if (ret != -ENOENT)
+				goto err_clk;
+		} else {
+			ret = regmap_mmio_attach_clk(regmap, clk);
+			if (ret)
+				goto err_attach;
+		}
 	}
 
 	syscon->regmap = regmap;
···
 	return ERR_PTR(ret);
 }
 
-struct regmap *syscon_node_to_regmap(struct device_node *np)
+static struct regmap *device_node_get_regmap(struct device_node *np,
+					     bool check_clk)
 {
 	struct syscon *entry, *syscon = NULL;
 
···
 	spin_unlock(&syscon_list_slock);
 
 	if (!syscon)
-		syscon = of_syscon_register(np);
+		syscon = of_syscon_register(np, check_clk);
 
 	if (IS_ERR(syscon))
 		return ERR_CAST(syscon);
 
 	return syscon->regmap;
+}
+
+struct regmap *device_node_to_regmap(struct device_node *np)
+{
+	return device_node_get_regmap(np, false);
+}
+EXPORT_SYMBOL_GPL(device_node_to_regmap);
+
+struct regmap *syscon_node_to_regmap(struct device_node *np)
+{
+	if (!of_device_is_compatible(np, "syscon"))
+		return ERR_PTR(-EINVAL);
+
+	return device_node_get_regmap(np, true);
 }
 EXPORT_SYMBOL_GPL(syscon_node_to_regmap);
 

drivers/mtd/nand/raw/ingenic/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
-config MTD_NAND_JZ4740
-	tristate "JZ4740 NAND controller"
-	depends on MACH_JZ4740 || COMPILE_TEST
-	depends on HAS_IOMEM
-	help
-	  Enables support for NAND Flash on JZ4740 SoC based boards.
-
 config MTD_NAND_JZ4780
 	tristate "JZ4780 NAND controller"
 	depends on JZ4780_NEMC

drivers/mtd/nand/raw/ingenic/Makefile

···
 # SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
 obj-$(CONFIG_MTD_NAND_JZ4780) += ingenic_nand.o
 
 ingenic_nand-y += ingenic_nand_drv.o

drivers/mtd/nand/raw/ingenic/jz4740_nand.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2009-2010, Lars-Peter Clausen <[e-mail]>
- *  JZ4740 SoC NAND controller driver
- */
-
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/rawnand.h>
-#include <linux/mtd/partitions.h>
-
-#include <linux/gpio/consumer.h>
-
-#include <linux/platform_data/jz4740/jz4740_nand.h>
-
-#define JZ_REG_NAND_CTRL	0x50
-#define JZ_REG_NAND_ECC_CTRL	0x100
-#define JZ_REG_NAND_DATA	0x104
-#define JZ_REG_NAND_PAR0	0x108
-#define JZ_REG_NAND_PAR1	0x10C
-#define JZ_REG_NAND_PAR2	0x110
-#define JZ_REG_NAND_IRQ_STAT	0x114
-#define JZ_REG_NAND_IRQ_CTRL	0x118
-#define JZ_REG_NAND_ERR(x)	(0x11C + ((x) << 2))
-
-#define JZ_NAND_ECC_CTRL_PAR_READY	BIT(4)
-#define JZ_NAND_ECC_CTRL_ENCODING	BIT(3)
-#define JZ_NAND_ECC_CTRL_RS		BIT(2)
-#define JZ_NAND_ECC_CTRL_RESET		BIT(1)
-#define JZ_NAND_ECC_CTRL_ENABLE		BIT(0)
-
-#define JZ_NAND_STATUS_ERR_COUNT	(BIT(31) | BIT(30) | BIT(29))
-#define JZ_NAND_STATUS_PAD_FINISH	BIT(4)
-#define JZ_NAND_STATUS_DEC_FINISH	BIT(3)
-#define JZ_NAND_STATUS_ENC_FINISH	BIT(2)
-#define JZ_NAND_STATUS_UNCOR_ERROR	BIT(1)
-#define JZ_NAND_STATUS_ERROR		BIT(0)
-
-#define JZ_NAND_CTRL_ENABLE_CHIP(x) BIT((x) << 1)
-#define JZ_NAND_CTRL_ASSERT_CHIP(x) BIT(((x) << 1) + 1)
-#define JZ_NAND_CTRL_ASSERT_CHIP_MASK 0xaa
-
-#define JZ_NAND_MEM_CMD_OFFSET 0x08000
-#define JZ_NAND_MEM_ADDR_OFFSET 0x10000
-
-struct jz_nand {
-	struct nand_chip chip;
-	void __iomem *base;
-	struct resource *mem;
-
-	unsigned char banks[JZ_NAND_NUM_BANKS];
-	void __iomem *bank_base[JZ_NAND_NUM_BANKS];
-	struct resource *bank_mem[JZ_NAND_NUM_BANKS];
-
-	int selected_bank;
-
-	struct gpio_desc *busy_gpio;
-	bool is_reading;
-};
-
-static inline struct jz_nand *mtd_to_jz_nand(struct mtd_info *mtd)
-{
-	return container_of(mtd_to_nand(mtd), struct jz_nand, chip);
-}
-
-static void jz_nand_select_chip(struct nand_chip *chip, int chipnr)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	uint32_t ctrl;
-	int banknr;
-
-	ctrl = readl(nand->base + JZ_REG_NAND_CTRL);
-	ctrl &= ~JZ_NAND_CTRL_ASSERT_CHIP_MASK;
-
-	if (chipnr == -1) {
-		banknr = -1;
-	} else {
-		banknr = nand->banks[chipnr] - 1;
-		chip->legacy.IO_ADDR_R = nand->bank_base[banknr];
-		chip->legacy.IO_ADDR_W = nand->bank_base[banknr];
-	}
-	writel(ctrl, nand->base + JZ_REG_NAND_CTRL);
-
-	nand->selected_bank = banknr;
-}
-
-static void jz_nand_cmd_ctrl(struct nand_chip *chip, int dat,
-			     unsigned int ctrl)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	uint32_t reg;
-	void __iomem *bank_base = nand->bank_base[nand->selected_bank];
-
-	BUG_ON(nand->selected_bank < 0);
-
-	if (ctrl & NAND_CTRL_CHANGE) {
-		BUG_ON((ctrl & NAND_ALE) && (ctrl & NAND_CLE));
-		if (ctrl & NAND_ALE)
-			bank_base += JZ_NAND_MEM_ADDR_OFFSET;
-		else if (ctrl & NAND_CLE)
-			bank_base += JZ_NAND_MEM_CMD_OFFSET;
-		chip->legacy.IO_ADDR_W = bank_base;
-
-		reg = readl(nand->base + JZ_REG_NAND_CTRL);
-		if (ctrl & NAND_NCE)
-			reg |= JZ_NAND_CTRL_ASSERT_CHIP(nand->selected_bank);
-		else
-			reg &= ~JZ_NAND_CTRL_ASSERT_CHIP(nand->selected_bank);
-		writel(reg, nand->base + JZ_REG_NAND_CTRL);
-	}
-	if (dat != NAND_CMD_NONE)
-		writeb(dat, chip->legacy.IO_ADDR_W);
-}
-
-static int jz_nand_dev_ready(struct nand_chip *chip)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	return gpiod_get_value_cansleep(nand->busy_gpio);
-}
-
-static void jz_nand_hwctl(struct nand_chip *chip, int mode)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	uint32_t reg;
-
-	writel(0, nand->base + JZ_REG_NAND_IRQ_STAT);
-	reg = readl(nand->base + JZ_REG_NAND_ECC_CTRL);
-
-	reg |= JZ_NAND_ECC_CTRL_RESET;
-	reg |= JZ_NAND_ECC_CTRL_ENABLE;
-	reg |= JZ_NAND_ECC_CTRL_RS;
-
-	switch (mode) {
-	case NAND_ECC_READ:
-		reg &= ~JZ_NAND_ECC_CTRL_ENCODING;
-		nand->is_reading = true;
-		break;
-	case NAND_ECC_WRITE:
-		reg |= JZ_NAND_ECC_CTRL_ENCODING;
-		nand->is_reading = false;
-		break;
-	default:
-		break;
-	}
-
-	writel(reg, nand->base + JZ_REG_NAND_ECC_CTRL);
-}
-
-static int jz_nand_calculate_ecc_rs(struct nand_chip *chip, const uint8_t *dat,
-				    uint8_t *ecc_code)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	uint32_t reg, status;
-	int i;
-	unsigned int timeout = 1000;
-	static uint8_t empty_block_ecc[] = {0xcd, 0x9d, 0x90, 0x58, 0xf4,
-						0x8b, 0xff, 0xb7, 0x6f};
-
-	if (nand->is_reading)
-		return 0;
-
-	do {
-		status = readl(nand->base + JZ_REG_NAND_IRQ_STAT);
-	} while (!(status & JZ_NAND_STATUS_ENC_FINISH) && --timeout);
-
-	if (timeout == 0)
-	    return -1;
-
-	reg = readl(nand->base + JZ_REG_NAND_ECC_CTRL);
-	reg &= ~JZ_NAND_ECC_CTRL_ENABLE;
-	writel(reg, nand->base + JZ_REG_NAND_ECC_CTRL);
-
-	for (i = 0; i < 9; ++i)
-		ecc_code[i] = readb(nand->base + JZ_REG_NAND_PAR0 + i);
-
-	/* If the written data is completly 0xff, we also want to write 0xff as
-	 * ecc, otherwise we will get in trouble when doing subpage writes. */
-	if (memcmp(ecc_code, empty_block_ecc, 9) == 0)
-		memset(ecc_code, 0xff, 9);
-
-	return 0;
-}
-
-static void jz_nand_correct_data(uint8_t *dat, int index, int mask)
-{
-	int offset = index & 0x7;
-	uint16_t data;
-
-	index += (index >> 3);
-
-	data = dat[index];
-	data |= dat[index+1] << 8;
-
-	mask ^= (data >> offset) & 0x1ff;
-	data &= ~(0x1ff << offset);
-	data |= (mask << offset);
-
-	dat[index] = data & 0xff;
-	dat[index+1] = (data >> 8) & 0xff;
-}
-
-static int jz_nand_correct_ecc_rs(struct nand_chip *chip, uint8_t *dat,
-				  uint8_t *read_ecc, uint8_t *calc_ecc)
-{
-	struct jz_nand *nand = mtd_to_jz_nand(nand_to_mtd(chip));
-	int i, error_count, index;
-	uint32_t reg, status, error;
-	unsigned int timeout = 1000;
-
-	for (i = 0; i < 9; ++i)
-		writeb(read_ecc[i], nand->base + JZ_REG_NAND_PAR0 + i);
-
-	reg = readl(nand->base + JZ_REG_NAND_ECC_CTRL);
-	reg |= JZ_NAND_ECC_CTRL_PAR_READY;
-	writel(reg, nand->base + JZ_REG_NAND_ECC_CTRL);
-
-	do {
-		status = readl(nand->base + JZ_REG_NAND_IRQ_STAT);
-	} while (!(status & JZ_NAND_STATUS_DEC_FINISH) && --timeout);
-
-	if (timeout == 0)
-		return -ETIMEDOUT;
-
-	reg = readl(nand->base + JZ_REG_NAND_ECC_CTRL);
-	reg &= ~JZ_NAND_ECC_CTRL_ENABLE;
-	writel(reg, nand->base + JZ_REG_NAND_ECC_CTRL);
-
-	if (status & JZ_NAND_STATUS_ERROR) {
-		if (status & JZ_NAND_STATUS_UNCOR_ERROR)
-			return -EBADMSG;
-
-		error_count = (status & JZ_NAND_STATUS_ERR_COUNT) >> 29;
-
-		for (i = 0; i < error_count; ++i) {
-			error = readl(nand->base + JZ_REG_NAND_ERR(i));
-			index = ((error >> 16) & 0x1ff) - 1;
-			if (index >= 0 && index < 512)
-				jz_nand_correct_data(dat, index, error & 0x1ff);
-		}
-
-		return error_count;
-	}
-
-	return 0;
-}
-
-static int jz_nand_ioremap_resource(struct platform_device *pdev,
-	const char *name, struct resource **res, void __iomem **base)
-{
-	int ret;
-
-	*res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
-	if (!*res) {
-		dev_err(&pdev->dev, "Failed to get platform %s memory\n", name);
-		ret = -ENXIO;
-		goto err;
-	}
-
-	*res = request_mem_region((*res)->start, resource_size(*res),
-				pdev->name);
-	if (!*res) {
-		dev_err(&pdev->dev, "Failed to request %s memory region\n", name);
-		ret = -EBUSY;
-		goto err;
-	}
-
-	*base = ioremap((*res)->start, resource_size(*res));
-	if (!*base) {
-		dev_err(&pdev->dev, "Failed to ioremap %s memory region\n", name);
-		ret = -EBUSY;
-		goto err_release_mem;
-	}
-
-	return 0;
-
-err_release_mem:
-	release_mem_region((*res)->start, resource_size(*res));
-err:
-	*res = NULL;
-	*base = NULL;
-	return ret;
-}
-
-static inline void jz_nand_iounmap_resource(struct resource *res,
-					    void __iomem *base)
-{
-	iounmap(base);
-	release_mem_region(res->start, resource_size(res));
-}
-
-static int jz_nand_detect_bank(struct platform_device *pdev,
-			       struct jz_nand *nand, unsigned char bank,
-			       size_t chipnr, uint8_t *nand_maf_id,
-			       uint8_t *nand_dev_id)
-{
-	int ret;
-	char res_name[6];
-	uint32_t ctrl;
-	struct nand_chip *chip = &nand->chip;
-	struct mtd_info *mtd = nand_to_mtd(chip);
-	struct nand_memory_organization *memorg;
-	u8 id[2];
-
-	memorg = nanddev_get_memorg(&chip->base);
-
-	/* Request I/O resource. */
-	sprintf(res_name, "bank%d", bank);
-	ret = jz_nand_ioremap_resource(pdev, res_name,
-					&nand->bank_mem[bank - 1],
-					&nand->bank_base[bank - 1]);
-	if (ret)
-		return ret;
-
-	/* Enable chip in bank. */
-	ctrl = readl(nand->base + JZ_REG_NAND_CTRL);
-	ctrl |= JZ_NAND_CTRL_ENABLE_CHIP(bank - 1);
-	writel(ctrl, nand->base + JZ_REG_NAND_CTRL);
-
-	if (chipnr == 0) {
-		/* Detect first chip. */
-		ret = nand_scan(chip, 1);
-		if (ret)
-			goto notfound_id;
-
-		/* Retrieve the IDs from the first chip. */
-		nand_select_target(chip, 0);
-		nand_reset_op(chip);
-		nand_readid_op(chip, 0, id, sizeof(id));
-		*nand_maf_id = id[0];
-		*nand_dev_id = id[1];
-	} else {
-		/* Detect additional chip. */
-		nand_select_target(chip, chipnr);
-		nand_reset_op(chip);
-		nand_readid_op(chip, 0, id, sizeof(id));
-		if (*nand_maf_id != id[0] || *nand_dev_id != id[1]) {
-			ret = -ENODEV;
-			goto notfound_id;
-		}
-
-		/* Update size of the MTD. */
-		memorg->ntargets++;
-		mtd->size += nanddev_target_size(&chip->base);
-	}
-
-	dev_info(&pdev->dev, "Found chip %zu on bank %i\n", chipnr, bank);
-	return 0;
-
-notfound_id:
-	dev_info(&pdev->dev, "No chip found on bank %i\n", bank);
-	ctrl &= ~(JZ_NAND_CTRL_ENABLE_CHIP(bank - 1));
-	writel(ctrl, nand->base + JZ_REG_NAND_CTRL);
-	jz_nand_iounmap_resource(nand->bank_mem[bank - 1],
-				 nand->bank_base[bank - 1]);
-	return ret;
-}
-
-static int jz_nand_attach_chip(struct nand_chip *chip)
-{
-	struct mtd_info *mtd = nand_to_mtd(chip);
-	struct device *dev = mtd->dev.parent;
-	struct jz_nand_platform_data *pdata = dev_get_platdata(dev);
-	struct platform_device *pdev = to_platform_device(dev);
-
-	if (pdata && pdata->ident_callback)
-		pdata->ident_callback(pdev, mtd, &pdata->partitions,
-				      &pdata->num_partitions);
-
-	return 0;
-}
-
-static const struct nand_controller_ops jz_nand_controller_ops = {
-	.attach_chip = jz_nand_attach_chip,
-};
-
-static int jz_nand_probe(struct platform_device *pdev)
-{
-	int ret;
-	struct jz_nand *nand;
-	struct nand_chip *chip;
-	struct mtd_info *mtd;
-	struct jz_nand_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	size_t chipnr, bank_idx;
-	uint8_t nand_maf_id = 0, nand_dev_id = 0;
-
-	nand = kzalloc(sizeof(*nand), GFP_KERNEL);
-	if (!nand)
-		return -ENOMEM;
-
-	ret = jz_nand_ioremap_resource(pdev, "mmio", &nand->mem, &nand->base);
-	if (ret)
-		goto err_free;
-
-	nand->busy_gpio = devm_gpiod_get_optional(&pdev->dev, "busy", GPIOD_IN);
-	if (IS_ERR(nand->busy_gpio)) {
-		ret = PTR_ERR(nand->busy_gpio);
-		dev_err(&pdev->dev, "Failed to request busy gpio %d\n",
-		    ret);
-		goto err_iounmap_mmio;
-	}
-
-	chip		= &nand->chip;
-	mtd		= nand_to_mtd(chip);
-	mtd->dev.parent = &pdev->dev;
-	mtd->name	= "jz4740-nand";
-
-	chip->ecc.hwctl		= jz_nand_hwctl;
-	chip->ecc.calculate	= jz_nand_calculate_ecc_rs;
-	chip->ecc.correct	= jz_nand_correct_ecc_rs;
-	chip->ecc.mode		= NAND_ECC_HW_OOB_FIRST;
-	chip->ecc.size		= 512;
-	chip->ecc.bytes		= 9;
-	chip->ecc.strength	= 4;
-	chip->ecc.options	= NAND_ECC_GENERIC_ERASED_CHECK;
-
-	chip->legacy.chip_delay = 50;
-	chip->legacy.cmd_ctrl = jz_nand_cmd_ctrl;
-	chip->legacy.select_chip = jz_nand_select_chip;
-	chip->legacy.dummy_controller.ops = &jz_nand_controller_ops;
-
-	if (nand->busy_gpio)
-		chip->legacy.dev_ready = jz_nand_dev_ready;
-
-	platform_set_drvdata(pdev, nand);
-
-	/* We are going to autodetect NAND chips in the banks specified in the
-	 * platform data. Although nand_scan_ident() can detect multiple chips,
-	 * it requires those chips to be numbered consecuitively, which is not
-	 * always the case for external memory banks. And a fixed chip-to-bank
-	 * mapping is not practical either, since for example Dingoo units
-	 * produced at different times have NAND chips in different banks.
-	 */
-	chipnr = 0;
-	for (bank_idx = 0; bank_idx < JZ_NAND_NUM_BANKS; bank_idx++) {
-		unsigned char bank;
-
-		/* If there is no platform data, look for NAND in bank 1,
-		 * which is the most likely bank since it is the only one
-		 * that can be booted from.
-		 */
-		bank = pdata ? pdata->banks[bank_idx] : bank_idx ^ 1;
-		if (bank == 0)
-			break;
-		if (bank > JZ_NAND_NUM_BANKS) {
-			dev_warn(&pdev->dev,
-				"Skipping non-existing bank: %d\n", bank);
-			continue;
-		}
-		/* The detection routine will directly or indirectly call
-		 * jz_nand_select_chip(), so nand->banks has to contain the
-		 * bank we're checking.
-		 */
-		nand->banks[chipnr] = bank;
-		if (jz_nand_detect_bank(pdev, nand, bank, chipnr,
-					&nand_maf_id, &nand_dev_id) == 0)
-			chipnr++;
-		else
-			nand->banks[chipnr] = 0;
-	}
-	if (chipnr == 0) {
-		dev_err(&pdev->dev, "No NAND chips found\n");
-		goto err_iounmap_mmio;
-	}
-
-	ret = mtd_device_register(mtd, pdata ? pdata->partitions : NULL,
-				  pdata ? pdata->num_partitions : 0);
-
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to add mtd device\n");
-		goto err_cleanup_nand;
-	}
-
-	dev_info(&pdev->dev, "Successfully registered JZ4740 NAND driver\n");
-
-	return 0;
-
-err_cleanup_nand:
-	nand_cleanup(chip);
-	while (chipnr--) {
-		unsigned char bank = nand->banks[chipnr];
-		jz_nand_iounmap_resource(nand->bank_mem[bank - 1],
-					 nand->bank_base[bank - 1]);
-	}
-	writel(0, nand->base + JZ_REG_NAND_CTRL);
-err_iounmap_mmio:
-	jz_nand_iounmap_resource(nand->mem, nand->base);
-err_free:
-	kfree(nand);
-	return ret;
-}
-
-static int jz_nand_remove(struct platform_device *pdev)
-{
-	struct jz_nand *nand = platform_get_drvdata(pdev);
-	size_t i;
-
-	nand_release(&nand->chip);
-
-	/* Deassert and disable all chips */
-	writel(0, nand->base + JZ_REG_NAND_CTRL);
-
-	for (i = 0; i < JZ_NAND_NUM_BANKS; ++i) {
-		unsigned char bank = nand->banks[i];
-		if (bank != 0) {
-			jz_nand_iounmap_resource(nand->bank_mem[bank - 1],
-						 nand->bank_base[bank - 1]);
-		}
-	}
-
-	jz_nand_iounmap_resource(nand->mem, nand->base);
-
-	kfree(nand);
-
-	return 0;
-}
-
-static struct platform_driver jz_nand_driver = {
-	.probe = jz_nand_probe,
-	.remove = jz_nand_remove,
-	.driver = {
-		.name = "jz4740-nand",
-	},
-};
-
-module_platform_driver(jz_nand_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_DESCRIPTION("NAND controller driver for JZ4740 SoC");
-MODULE_ALIAS("platform:jz4740-nand");

drivers/power/supply/Kconfig

···
 	help
 	 Say Y to include support for NXP PCF50633 Main Battery Charger.
 
-config BATTERY_JZ4740
-	tristate "Ingenic JZ4740 battery"
-	depends on MACH_JZ4740
-	depends on MFD_JZ4740_ADC
-	help
-	  Say Y to enable support for the battery on Ingenic JZ4740 based
-	  boards.
-
-	  This driver can be build as a module. If so, the module will be
-	  called jz4740-battery.
-
 config BATTERY_RX51
 	tristate "Nokia RX-51 (N900) battery driver"
 	depends on TWL4030_MADC

drivers/power/supply/Makefile

···
 obj-$(CONFIG_BATTERY_TWL4030_MADC)	+= twl4030_madc_battery.o
 obj-$(CONFIG_CHARGER_88PM860X)	+= 88pm860x_charger.o
 obj-$(CONFIG_CHARGER_PCF50633)	+= pcf50633-charger.o
-obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-battery.o
 obj-$(CONFIG_BATTERY_RX51)	+= rx51_battery.o
 obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o pm2301_charger.o
 obj-$(CONFIG_CHARGER_CPCAP)	+= cpcap-charger.o

drivers/power/supply/jz4740-battery.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Battery measurement code for Ingenic JZ SOC.
- *
- * Copyright (C) 2009 Jiejing Zhang <[e-mail]>
- * Copyright (C) 2010, Lars-Peter Clausen <[e-mail]>
- *
- * based on tosa_battery.c
- *
- * Copyright (C) 2008 Marek Vasut <[e-mail]>
- */
-
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/mfd/core.h>
-#include <linux/power_supply.h>
-
-#include <linux/power/jz4740-battery.h>
-#include <linux/jz4740-adc.h>
-
-struct jz_battery {
-	struct jz_battery_platform_data *pdata;
-	struct platform_device *pdev;
-
-	void __iomem *base;
-
-	int irq;
-	int charge_irq;
-
-	const struct mfd_cell *cell;
-
-	int status;
-	long voltage;
-
-	struct completion read_completion;
-
-	struct power_supply *battery;
-	struct power_supply_desc battery_desc;
-	struct delayed_work work;
-
-	struct mutex lock;
-};
-
-static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy)
-{
-	return power_supply_get_drvdata(psy);
-}
-
-static irqreturn_t jz_battery_irq_handler(int irq, void *devid)
-{
-	struct jz_battery *battery = devid;
-
-	complete(&battery->read_completion);
-	return IRQ_HANDLED;
-}
-
-static long jz_battery_read_voltage(struct jz_battery *battery)
-{
-	long t;
-	unsigned long val;
-	long voltage;
-
-	mutex_lock(&battery->lock);
-
-	reinit_completion(&battery->read_completion);
-
-	enable_irq(battery->irq);
-	battery->cell->enable(battery->pdev);
-
-	t = wait_for_completion_interruptible_timeout(&battery->read_completion,
-		HZ);
-
-	if (t > 0) {
-		val = readw(battery->base) & 0xfff;
-
-		if (battery->pdata->info.voltage_max_design <= 2500000)
-			val = (val * 78125UL) >> 7UL;
-		else
-			val = ((val * 924375UL) >> 9UL) + 33000;
-		voltage = (long)val;
-	} else {
-		voltage = t ? t : -ETIMEDOUT;
-	}
-
-	battery->cell->disable(battery->pdev);
-	disable_irq(battery->irq);
-
-	mutex_unlock(&battery->lock);
-
-	return voltage;
-}
-
-static int jz_battery_get_capacity(struct power_supply *psy)
-{
-	struct jz_battery *jz_battery = psy_to_jz_battery(psy);
-	struct power_supply_info *info = &jz_battery->pdata->info;
-	long voltage;
-	int ret;
-	int voltage_span;
-
-	voltage = jz_battery_read_voltage(jz_battery);
-
-	if (voltage < 0)
-		return voltage;
-
-	voltage_span = info->voltage_max_design - info->voltage_min_design;
-	ret = ((voltage - info->voltage_min_design) * 100) / voltage_span;
-
-	if (ret > 100)
-		ret = 100;
-	else if (ret < 0)
-		ret = 0;
-
-	return ret;
-}
-
-static int jz_battery_get_property(struct power_supply *psy,
-	enum power_supply_property psp, union power_supply_propval *val)
-{
-	struct jz_battery *jz_battery = psy_to_jz_battery(psy);
-	struct power_supply_info *info = &jz_battery->pdata->info;
-	long voltage;
-
-	switch (psp) {
-	case POWER_SUPPLY_PROP_STATUS:
-		val->intval = jz_battery->status;
-		break;
-	case POWER_SUPPLY_PROP_TECHNOLOGY:
-		val->intval = jz_battery->pdata->info.technology;
-		break;
-	case POWER_SUPPLY_PROP_HEALTH:
-		voltage = jz_battery_read_voltage(jz_battery);
-		if (voltage < info->voltage_min_design)
-			val->intval = POWER_SUPPLY_HEALTH_DEAD;
-		else
-			val->intval = POWER_SUPPLY_HEALTH_GOOD;
-		break;
-	case POWER_SUPPLY_PROP_CAPACITY:
-		val->intval = jz_battery_get_capacity(psy);
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
-		val->intval = jz_battery_read_voltage(jz_battery);
-		if (val->intval < 0)
-			return val->intval;
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
-		val->intval = info->voltage_max_design;
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
-		val->intval = info->voltage_min_design;
-		break;
-	case POWER_SUPPLY_PROP_PRESENT:
-		val->intval = 1;
-		break;
-	default:
-		return -EINVAL;
-	}
-	return 0;
-}
-
-static void jz_battery_external_power_changed(struct power_supply *psy)
-{
-	struct jz_battery *jz_battery = psy_to_jz_battery(psy);
-
-	mod_delayed_work(system_wq, &jz_battery->work, 0);
-}
-
-static irqreturn_t jz_battery_charge_irq(int irq, void *data)
-{
-	struct jz_battery *jz_battery = data;
-
-	mod_delayed_work(system_wq, &jz_battery->work, 0);
-
-	return IRQ_HANDLED;
-}
-
-static void jz_battery_update(struct jz_battery *jz_battery)
-{
-	int status;
-	long voltage;
-	bool has_changed = false;
-	int is_charging;
-
-	if (gpio_is_valid(jz_battery->pdata->gpio_charge)) {
-		is_charging = gpio_get_value(jz_battery->pdata->gpio_charge);
-		is_charging ^= jz_battery->pdata->gpio_charge_active_low;
-		if (is_charging)
-			status = POWER_SUPPLY_STATUS_CHARGING;
-		else
-			status = POWER_SUPPLY_STATUS_NOT_CHARGING;
-
-		if (status != jz_battery->status) {
-			jz_battery->status = status;
-			has_changed = true;
-		}
-	}
-
-	voltage = jz_battery_read_voltage(jz_battery);
-	if (voltage >= 0 && abs(voltage - jz_battery->voltage) > 50000) {
-		jz_battery->voltage = voltage;
-		has_changed = true;
-	}
-
-	if (has_changed)
-		power_supply_changed(jz_battery->battery);
-}
-
-static enum power_supply_property jz_battery_properties[] = {
-	POWER_SUPPLY_PROP_STATUS,
-	POWER_SUPPLY_PROP_TECHNOLOGY,
-	POWER_SUPPLY_PROP_HEALTH,
-	POWER_SUPPLY_PROP_CAPACITY,
-	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
-	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
-	POWER_SUPPLY_PROP_PRESENT,
-};
-
-static void jz_battery_work(struct work_struct *work)
-{
-	/* Too small interval will increase system workload */
-	const int interval = HZ * 30;
-	struct jz_battery *jz_battery = container_of(work, struct jz_battery,
-					    work.work);
-
-	jz_battery_update(jz_battery);
-	schedule_delayed_work(&jz_battery->work, interval);
-}
-
-static int jz_battery_probe(struct platform_device *pdev)
-{
-	int ret = 0;
-	struct jz_battery_platform_data *pdata = pdev->dev.parent->platform_data;
-	struct power_supply_config psy_cfg = {};
-	struct jz_battery *jz_battery;
-	struct power_supply_desc *battery_desc;
-	struct resource *mem;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "No platform_data supplied\n");
-		return -ENXIO;
-	}
-
-	jz_battery = devm_kzalloc(&pdev->dev, sizeof(*jz_battery), GFP_KERNEL);
-	if (!jz_battery) {
-		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
-		return -ENOMEM;
-	}
-
-	jz_battery->cell = mfd_get_cell(pdev);
-
-	jz_battery->irq = platform_get_irq(pdev, 0);
-	if (jz_battery->irq < 0) {
-		dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
-		return jz_battery->irq;
-	}
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	jz_battery->base = devm_ioremap_resource(&pdev->dev, mem);
-	if (IS_ERR(jz_battery->base))
-		return PTR_ERR(jz_battery->base);
-
-	battery_desc = &jz_battery->battery_desc;
-	battery_desc->name = pdata->info.name;
-	battery_desc->type = POWER_SUPPLY_TYPE_BATTERY;
-	battery_desc->properties	= jz_battery_properties;
-	battery_desc->num_properties	= ARRAY_SIZE(jz_battery_properties);
-	battery_desc->get_property	= jz_battery_get_property;
-	battery_desc->external_power_changed =
-					jz_battery_external_power_changed;
-	battery_desc->use_for_apm	= 1;
-
-	psy_cfg.drv_data = jz_battery;
-
-	jz_battery->pdata = pdata;
-	jz_battery->pdev = pdev;
-
-	init_completion(&jz_battery->read_completion);
-	mutex_init(&jz_battery->lock);
-
-	INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work);
-
-	ret = request_irq(jz_battery->irq, jz_battery_irq_handler, 0, pdev->name,
-			jz_battery);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to request irq %d\n", ret);
-		return ret;
-	}
-	disable_irq(jz_battery->irq);
-
-	if (gpio_is_valid(pdata->gpio_charge)) {
-		ret = gpio_request(pdata->gpio_charge, dev_name(&pdev->dev));
-		if (ret) {
-			dev_err(&pdev->dev, "charger state gpio request failed.\n");
-			goto err_free_irq;
-		}
-		ret = gpio_direction_input(pdata->gpio_charge);
-		if (ret) {
-			dev_err(&pdev->dev, "charger state gpio set direction failed.\n");
-			goto err_free_gpio;
-		}
-
-		jz_battery->charge_irq = gpio_to_irq(pdata->gpio_charge);
-
-		if (jz_battery->charge_irq >= 0) {
-			ret = request_irq(jz_battery->charge_irq,
-				    jz_battery_charge_irq,
-				    IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-				    dev_name(&pdev->dev), jz_battery);
-			if (ret) {
-				dev_err(&pdev->dev, "Failed to request charge irq: %d\n", ret);
-				goto err_free_gpio;
-			}
-		}
-	} else {
-		jz_battery->charge_irq = -1;
-	}
-
-	if (jz_battery->pdata->info.voltage_max_design <= 2500000)
-		jz4740_adc_set_config(pdev->dev.parent, JZ_ADC_CONFIG_BAT_MB,
-			JZ_ADC_CONFIG_BAT_MB);
-	else
-		jz4740_adc_set_config(pdev->dev.parent, JZ_ADC_CONFIG_BAT_MB, 0);
-
-	jz_battery->battery = power_supply_register(&pdev->dev, battery_desc,
-							&psy_cfg);
-	if (IS_ERR(jz_battery->battery)) {
-		dev_err(&pdev->dev, "power supply battery register failed.\n");
-		ret = PTR_ERR(jz_battery->battery);
-		goto err_free_charge_irq;
-	}
-
-	platform_set_drvdata(pdev, jz_battery);
-	schedule_delayed_work(&jz_battery->work, 0);
-
-	return 0;
-
-err_free_charge_irq:
-	if (jz_battery->charge_irq >= 0)
-		free_irq(jz_battery->charge_irq, jz_battery);
-err_free_gpio:
-	if (gpio_is_valid(pdata->gpio_charge))
-		gpio_free(jz_battery->pdata->gpio_charge);
-err_free_irq:
-	free_irq(jz_battery->irq, jz_battery);
-	return ret;
-}
-
-static int jz_battery_remove(struct platform_device *pdev)
-{
-	struct jz_battery *jz_battery = platform_get_drvdata(pdev);
-
-	cancel_delayed_work_sync(&jz_battery->work);
-
-	if (gpio_is_valid(jz_battery->pdata->gpio_charge)) {
-		if (jz_battery->charge_irq >= 0)
-			free_irq(jz_battery->charge_irq, jz_battery);
-		gpio_free(jz_battery->pdata->gpio_charge);
-	}
-
-	power_supply_unregister(jz_battery->battery);
-
-	free_irq(jz_battery->irq, jz_battery);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int jz_battery_suspend(struct device *dev)
-{
-	struct jz_battery *jz_battery = dev_get_drvdata(dev);
-
-	cancel_delayed_work_sync(&jz_battery->work);
-	jz_battery->status = POWER_SUPPLY_STATUS_UNKNOWN;
-
-	return 0;
-}
-
-static int jz_battery_resume(struct device *dev)
-{
-	struct jz_battery *jz_battery = dev_get_drvdata(dev);
-
-	schedule_delayed_work(&jz_battery->work, 0);
-
-	return 0;
-}
-
-static const struct dev_pm_ops jz_battery_pm_ops = {
-	.suspend	= jz_battery_suspend,
-	.resume		= jz_battery_resume,
-};
-
-#define JZ_BATTERY_PM_OPS (&jz_battery_pm_ops)
-#else
-#define JZ_BATTERY_PM_OPS NULL
-#endif
-
-static struct platform_driver jz_battery_driver = {
-	.probe		= jz_battery_probe,
-	.remove		= jz_battery_remove,
-	.driver = {
-		.name = "jz4740-battery",
-		.pm = JZ_BATTERY_PM_OPS,
-	},
-};
-
-module_platform_driver(jz_battery_driver);
-
-MODULE_ALIAS("platform:jz4740-battery");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_DESCRIPTION("JZ4740 SoC battery driver");

drivers/video/fbdev/Kconfig

···
 	  and could also have been called by other names when coupled with
 	  a bridge adapter.
 
-config FB_JZ4740
-	tristate "JZ4740 LCD framebuffer support"
-	depends on FB && MACH_JZ4740
-	select FB_SYS_FILLRECT
-	select FB_SYS_COPYAREA
-	select FB_SYS_IMAGEBLIT
-	help
-	  Framebuffer support for the JZ4740 SoC.
-
 config FB_PUV3_UNIGFX
 	tristate "PKUnity v3 Unigfx framebuffer support"
 	depends on FB && UNICORE32 && ARCH_PUV3

drivers/video/fbdev/Makefile

···
 obj-$(CONFIG_XEN_FBDEV_FRONTEND)  += xen-fbfront.o
 obj-$(CONFIG_FB_CARMINE)          += carminefb.o
 obj-$(CONFIG_FB_MB862XX)	  += mb862xx/
-obj-$(CONFIG_FB_JZ4740)		  += jz4740_fb.o
 obj-$(CONFIG_FB_PUV3_UNIGFX)      += fb-puv3.o
 obj-$(CONFIG_FB_HYPERV)		  += hyperv_fb.o
 obj-$(CONFIG_FB_OPENCORES)	  += ocfb.o

drivers/video/fbdev/jz4740_fb.c

···
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (C) 2009-2010, Lars-Peter Clausen <[e-mail]>
- *	JZ4740 SoC LCD framebuffer driver
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/pinctrl/consumer.h>
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-
-#include <linux/console.h>
-#include <linux/fb.h>
-
-#include <linux/dma-mapping.h>
-
-#include <asm/mach-jz4740/jz4740_fb.h>
-
-#define JZ_REG_LCD_CFG		0x00
-#define JZ_REG_LCD_VSYNC	0x04
-#define JZ_REG_LCD_HSYNC	0x08
-#define JZ_REG_LCD_VAT		0x0C
-#define JZ_REG_LCD_DAH		0x10
-#define JZ_REG_LCD_DAV		0x14
-#define JZ_REG_LCD_PS		0x18
-#define JZ_REG_LCD_CLS		0x1C
-#define JZ_REG_LCD_SPL		0x20
-#define JZ_REG_LCD_REV		0x24
-#define JZ_REG_LCD_CTRL		0x30
-#define JZ_REG_LCD_STATE	0x34
-#define JZ_REG_LCD_IID		0x38
-#define JZ_REG_LCD_DA0		0x40
-#define JZ_REG_LCD_SA0		0x44
-#define JZ_REG_LCD_FID0		0x48
-#define JZ_REG_LCD_CMD0		0x4C
-#define JZ_REG_LCD_DA1		0x50
-#define JZ_REG_LCD_SA1		0x54
-#define JZ_REG_LCD_FID1		0x58
-#define JZ_REG_LCD_CMD1		0x5C
-
-#define JZ_LCD_CFG_SLCD			BIT(31)
-#define JZ_LCD_CFG_PS_DISABLE		BIT(23)
-#define JZ_LCD_CFG_CLS_DISABLE		BIT(22)
-#define JZ_LCD_CFG_SPL_DISABLE		BIT(21)
-#define JZ_LCD_CFG_REV_DISABLE		BIT(20)
-#define JZ_LCD_CFG_HSYNCM		BIT(19)
-#define JZ_LCD_CFG_PCLKM		BIT(18)
-#define JZ_LCD_CFG_INV			BIT(17)
-#define JZ_LCD_CFG_SYNC_DIR		BIT(16)
-#define JZ_LCD_CFG_PS_POLARITY		BIT(15)
-#define JZ_LCD_CFG_CLS_POLARITY		BIT(14)
-#define JZ_LCD_CFG_SPL_POLARITY		BIT(13)
-#define JZ_LCD_CFG_REV_POLARITY		BIT(12)
-#define JZ_LCD_CFG_HSYNC_ACTIVE_LOW	BIT(11)
-#define JZ_LCD_CFG_PCLK_FALLING_EDGE	BIT(10)
-#define JZ_LCD_CFG_DE_ACTIVE_LOW	BIT(9)
-#define JZ_LCD_CFG_VSYNC_ACTIVE_LOW	BIT(8)
-#define JZ_LCD_CFG_18_BIT		BIT(7)
-#define JZ_LCD_CFG_PDW			(BIT(5) | BIT(4))
-#define JZ_LCD_CFG_MODE_MASK 0xf
-
-#define JZ_LCD_CTRL_BURST_4		(0x0 << 28)
-#define JZ_LCD_CTRL_BURST_8		(0x1 << 28)
-#define JZ_LCD_CTRL_BURST_16		(0x2 << 28)
-#define JZ_LCD_CTRL_RGB555		BIT(27)
-#define JZ_LCD_CTRL_OFUP		BIT(26)
-#define JZ_LCD_CTRL_FRC_GRAYSCALE_16	(0x0 << 24)
-#define JZ_LCD_CTRL_FRC_GRAYSCALE_4	(0x1 << 24)
-#define JZ_LCD_CTRL_FRC_GRAYSCALE_2	(0x2 << 24)
-#define JZ_LCD_CTRL_PDD_MASK		(0xff << 16)
-#define JZ_LCD_CTRL_EOF_IRQ		BIT(13)
-#define JZ_LCD_CTRL_SOF_IRQ		BIT(12)
-#define JZ_LCD_CTRL_OFU_IRQ		BIT(11)
-#define JZ_LCD_CTRL_IFU0_IRQ		BIT(10)
-#define JZ_LCD_CTRL_IFU1_IRQ		BIT(9)
-#define JZ_LCD_CTRL_DD_IRQ		BIT(8)
-#define JZ_LCD_CTRL_QDD_IRQ		BIT(7)
-#define JZ_LCD_CTRL_REVERSE_ENDIAN	BIT(6)
-#define JZ_LCD_CTRL_LSB_FISRT		BIT(5)
-#define JZ_LCD_CTRL_DISABLE		BIT(4)
-#define JZ_LCD_CTRL_ENABLE		BIT(3)
-#define JZ_LCD_CTRL_BPP_1		0x0
-#define JZ_LCD_CTRL_BPP_2		0x1
-#define JZ_LCD_CTRL_BPP_4		0x2
-#define JZ_LCD_CTRL_BPP_8		0x3
-#define JZ_LCD_CTRL_BPP_15_16		0x4
-#define JZ_LCD_CTRL_BPP_18_24		0x5
-
-#define JZ_LCD_CMD_SOF_IRQ BIT(31)
-#define JZ_LCD_CMD_EOF_IRQ BIT(30)
-#define JZ_LCD_CMD_ENABLE_PAL BIT(28)
-
-#define JZ_LCD_SYNC_MASK 0x3ff
-
-#define JZ_LCD_STATE_DISABLED BIT(0)
-
-struct jzfb_framedesc {
-	uint32_t next;
-	uint32_t addr;
-	uint32_t id;
-	uint32_t cmd;
-} __packed;
-
-struct jzfb {
-	struct fb_info *fb;
-	struct platform_device *pdev;
-	void __iomem *base;
-	struct resource *mem;
-	struct jz4740_fb_platform_data *pdata;
-
-	size_t vidmem_size;
-	void *vidmem;
-	dma_addr_t vidmem_phys;
-	struct jzfb_framedesc *framedesc;
-	dma_addr_t framedesc_phys;
-
-	struct clk *ldclk;
-	struct clk *lpclk;
-
-	unsigned is_enabled:1;
-	struct mutex lock;
-
-	uint32_t pseudo_palette[16];
-};
-
-static const struct fb_fix_screeninfo jzfb_fix = {
-	.id		= "JZ4740 FB",
-	.type		= FB_TYPE_PACKED_PIXELS,
-	.visual		= FB_VISUAL_TRUECOLOR,
-	.xpanstep	= 0,
-	.ypanstep	= 0,
-	.ywrapstep	= 0,
-	.accel		= FB_ACCEL_NONE,
-};
-
-/* Based on CNVT_TOHW macro from skeletonfb.c */
-static inline uint32_t jzfb_convert_color_to_hw(unsigned val,
-	struct fb_bitfield *bf)
-{
-	return (((val << bf->length) + 0x7FFF - val) >> 16) << bf->offset;
-}
-
-static int jzfb_setcolreg(unsigned regno, unsigned red, unsigned green,
-			unsigned blue, unsigned transp, struct fb_info *fb)
-{
-	uint32_t color;
-
-	if (regno >= 16)
-		return -EINVAL;
-
-	color = jzfb_convert_color_to_hw(red, &fb->var.red);
-	color |= jzfb_convert_color_to_hw(green, &fb->var.green);
-	color |= jzfb_convert_color_to_hw(blue, &fb->var.blue);
-	color |= jzfb_convert_color_to_hw(transp, &fb->var.transp);
-
-	((uint32_t *)(fb->pseudo_palette))[regno] = color;
-
-	return 0;
-}
-
-static int jzfb_get_controller_bpp(struct jzfb *jzfb)
-{
-	switch (jzfb->pdata->bpp) {
-	case 18:
-	case 24:
-		return 32;
-	case 15:
-		return 16;
-	default:
-		return jzfb->pdata->bpp;
-	}
-}
-
-static struct fb_videomode *jzfb_get_mode(struct jzfb *jzfb,
-	struct fb_var_screeninfo *var)
-{
-	size_t i;
-	struct fb_videomode *mode = jzfb->pdata->modes;
-
-	for (i = 0; i < jzfb->pdata->num_modes; ++i, ++mode) {
-		if (mode->xres == var->xres && mode->yres == var->yres)
-			return mode;
-	}
-
-	return NULL;
-}
-
-static int jzfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fb)
-{
-	struct jzfb *jzfb = fb->par;
-	struct fb_videomode *mode;
-
-	if (var->bits_per_pixel != jzfb_get_controller_bpp(jzfb) &&
-		var->bits_per_pixel != jzfb->pdata->bpp)
-		return -EINVAL;
-
-	mode = jzfb_get_mode(jzfb, var);
-	if (mode == NULL)
-		return -EINVAL;
-
-	fb_videomode_to_var(var, mode);
-
-	switch (jzfb->pdata->bpp) {
-	case 8:
-		break;
-	case 15:
-		var->red.offset = 10;
-		var->red.length = 5;
-		var->green.offset = 6;
-		var->green.length = 5;
-		var->blue.offset = 0;
-		var->blue.length = 5;
-		break;
-	case 16:
-		var->red.offset = 11;
-		var->red.length = 5;
-		var->green.offset = 5;
-		var->green.length = 6;
-		var->blue.offset = 0;
-		var->blue.length = 5;
-		break;
-	case 18:
-		var->red.offset = 16;
-		var->red.length = 6;
-		var->green.offset = 8;
-		var->green.length = 6;
-		var->blue.offset = 0;
-		var->blue.length = 6;
-		var->bits_per_pixel = 32;
-		break;
-	case 32:
-	case 24:
-		var->transp.offset = 24;
-		var->transp.length = 8;
-		var->red.offset = 16;
-		var->red.length = 8;
-		var->green.offset = 8;
-		var->green.length = 8;
-		var->blue.offset = 0;
-		var->blue.length = 8;
-		var->bits_per_pixel = 32;
-		break;
-	default:
-		break;
-	}
-
-	return 0;
-}
-
-static int jzfb_set_par(struct fb_info *info)
-{
-	struct jzfb *jzfb = info->par;
-	struct jz4740_fb_platform_data *pdata = jzfb->pdata;
-	struct fb_var_screeninfo *var = &info->var;
-	struct fb_videomode *mode;
-	uint16_t hds, vds;
-	uint16_t hde, vde;
-	uint16_t ht, vt;
-	uint32_t ctrl;
-	uint32_t cfg;
-	unsigned long rate;
-
-	mode = jzfb_get_mode(jzfb, var);
-	if (mode == NULL)
-		return -EINVAL;
-
-	if (mode == info->mode)
-		return 0;
-
-	info->mode = mode;
-
-	hds = mode->hsync_len + mode->left_margin;
-	hde = hds + mode->xres;
-	ht = hde + mode->right_margin;
-
-	vds = mode->vsync_len + mode->upper_margin;
-	vde = vds + mode->yres;
-	vt = vde + mode->lower_margin;
-
-	ctrl = JZ_LCD_CTRL_OFUP | JZ_LCD_CTRL_BURST_16;
-
-	switch (pdata->bpp) {
-	case 1:
-		ctrl |= JZ_LCD_CTRL_BPP_1;
-		break;
-	case 2:
-		ctrl |= JZ_LCD_CTRL_BPP_2;
-		break;
-	case 4:
-		ctrl |= JZ_LCD_CTRL_BPP_4;
-		break;
-	case 8:
-		ctrl |= JZ_LCD_CTRL_BPP_8;
-	break;
-	case 15:
-		ctrl |= JZ_LCD_CTRL_RGB555; /* Falltrough */
-	case 16:
-		ctrl |= JZ_LCD_CTRL_BPP_15_16;
-		break;
-	case 18:
-	case 24:
-	case 32:
-		ctrl |= JZ_LCD_CTRL_BPP_18_24;
-		break;
-	default:
-		break;
-	}
-
-	cfg = pdata->lcd_type & 0xf;
-
-	if (!(mode->sync & FB_SYNC_HOR_HIGH_ACT))
-		cfg |= JZ_LCD_CFG_HSYNC_ACTIVE_LOW;
-
-	if (!(mode->sync & FB_SYNC_VERT_HIGH_ACT))
-		cfg |= JZ_LCD_CFG_VSYNC_ACTIVE_LOW;
-
-	if (pdata->pixclk_falling_edge)
-		cfg |= JZ_LCD_CFG_PCLK_FALLING_EDGE;
-
-	if (pdata->date_enable_active_low)
-		cfg |= JZ_LCD_CFG_DE_ACTIVE_LOW;
-
-	if (pdata->lcd_type == JZ_LCD_TYPE_GENERIC_18_BIT)
-		cfg |= JZ_LCD_CFG_18_BIT;
-
-	if (mode->pixclock) {
-		rate = PICOS2KHZ(mode->pixclock) * 1000;
-		mode->refresh = rate / vt / ht;
-	} else {
-		if (pdata->lcd_type == JZ_LCD_TYPE_8BIT_SERIAL)
-			rate = mode->refresh * (vt + 2 * mode->xres) * ht;
-		else
-			rate = mode->refresh * vt * ht;
-
-		mode->pixclock = KHZ2PICOS(rate / 1000);
-	}
-
-	mutex_lock(&jzfb->lock);
-	if (!jzfb->is_enabled)
-		clk_enable(jzfb->ldclk);
-	else
-		ctrl |= JZ_LCD_CTRL_ENABLE;
-
-	switch (pdata->lcd_type) {
-	case JZ_LCD_TYPE_SPECIAL_TFT_1:
-	case JZ_LCD_TYPE_SPECIAL_TFT_2:
-	case JZ_LCD_TYPE_SPECIAL_TFT_3:
-		writel(pdata->special_tft_config.spl, jzfb->base + JZ_REG_LCD_SPL);
-		writel(pdata->special_tft_config.cls, jzfb->base + JZ_REG_LCD_CLS);
-		writel(pdata->special_tft_config.ps, jzfb->base + JZ_REG_LCD_PS);
-		writel(pdata->special_tft_config.ps, jzfb->base + JZ_REG_LCD_REV);
-		break;
-	default:
-		cfg |= JZ_LCD_CFG_PS_DISABLE;
-		cfg |= JZ_LCD_CFG_CLS_DISABLE;
-		cfg |= JZ_LCD_CFG_SPL_DISABLE;
-		cfg |= JZ_LCD_CFG_REV_DISABLE;
-		break;
-	}
-
-	writel(mode->hsync_len, jzfb->base + JZ_REG_LCD_HSYNC);
-	writel(mode->vsync_len, jzfb->base + JZ_REG_LCD_VSYNC);
-
-	writel((ht << 16) | vt, jzfb->base + JZ_REG_LCD_VAT);
-
-	writel((hds << 16) | hde, jzfb->base + JZ_REG_LCD_DAH);
-	writel((vds << 16) | vde, jzfb->base + JZ_REG_LCD_DAV);
-
-	writel(cfg, jzfb->base + JZ_REG_LCD_CFG);
-
-	writel(ctrl, jzfb->base + JZ_REG_LCD_CTRL);
-
-	if (!jzfb->is_enabled)
-		clk_disable_unprepare(jzfb->ldclk);
-
-	mutex_unlock(&jzfb->lock);
-
-	clk_set_rate(jzfb->lpclk, rate);
-	clk_set_rate(jzfb->ldclk, rate * 3);
-
-	return 0;
-}
-
-static void jzfb_enable(struct jzfb *jzfb)
-{
-	uint32_t ctrl;
-
-	clk_prepare_enable(jzfb->ldclk);
-
-	pinctrl_pm_select_default_state(&jzfb->pdev->dev);
-
-	writel(0, jzfb->base + JZ_REG_LCD_STATE);
-
-	writel(jzfb->framedesc->next, jzfb->base + JZ_REG_LCD_DA0);
-
-	ctrl = readl(jzfb->base + JZ_REG_LCD_CTRL);
-	ctrl |= JZ_LCD_CTRL_ENABLE;
-	ctrl &= ~JZ_LCD_CTRL_DISABLE;
-	writel(ctrl, jzfb->base + JZ_REG_LCD_CTRL);
-}
-
-static void jzfb_disable(struct jzfb *jzfb)
-{
-	uint32_t ctrl;
-
-	ctrl = readl(jzfb->base + JZ_REG_LCD_CTRL);
-	ctrl |= JZ_LCD_CTRL_DISABLE;
-	writel(ctrl, jzfb->base + JZ_REG_LCD_CTRL);
-	do {
-		ctrl = readl(jzfb->base + JZ_REG_LCD_STATE);
-	} while (!(ctrl & JZ_LCD_STATE_DISABLED));
-
-	pinctrl_pm_select_sleep_state(&jzfb->pdev->dev);
-
-	clk_disable_unprepare(jzfb->ldclk);
-}
-
-static int jzfb_blank(int blank_mode, struct fb_info *info)
-{
-	struct jzfb *jzfb = info->par;
-
-	switch (blank_mode) {
-	case FB_BLANK_UNBLANK:
-		mutex_lock(&jzfb->lock);
-		if (jzfb->is_enabled) {
-			mutex_unlock(&jzfb->lock);
-			return 0;
-		}
-
-		jzfb_enable(jzfb);
-		jzfb->is_enabled = 1;
-
-		mutex_unlock(&jzfb->lock);
-		break;
-	default:
-		mutex_lock(&jzfb->lock);
-		if (!jzfb->is_enabled) {
-			mutex_unlock(&jzfb->lock);
-			return 0;
-		}
-
-		jzfb_disable(jzfb);
-		jzfb->is_enabled = 0;
-
-		mutex_unlock(&jzfb->lock);
-		break;
-	}
-
-	return 0;
-}
-
-static int jzfb_alloc_devmem(struct jzfb *jzfb)
-{
-	int max_videosize = 0;
-	struct fb_videomode *mode = jzfb->pdata->modes;
-	int i;
-
-	for (i = 0; i < jzfb->pdata->num_modes; ++mode, ++i) {
-		if (max_videosize < mode->xres * mode->yres)
-			max_videosize = mode->xres * mode->yres;
-	}
-
-	max_videosize *= jzfb_get_controller_bpp(jzfb) >> 3;
-
-	jzfb->framedesc = dma_alloc_coherent(&jzfb->pdev->dev,
-					sizeof(*jzfb->framedesc),
-					&jzfb->framedesc_phys, GFP_KERNEL);
-
-	if (!jzfb->framedesc)
-		return -ENOMEM;
-
-	jzfb->vidmem_size = PAGE_ALIGN(max_videosize);
-	jzfb->vidmem = dma_alloc_coherent(&jzfb->pdev->dev,
-					jzfb->vidmem_size,
-					&jzfb->vidmem_phys, GFP_KERNEL);
-
-	if (!jzfb->vidmem)
-		goto err_free_framedesc;
-
-	jzfb->framedesc->next = jzfb->framedesc_phys;
-	jzfb->framedesc->addr = jzfb->vidmem_phys;
-	jzfb->framedesc->id = 0xdeafbead;
-	jzfb->framedesc->cmd = 0;
-	jzfb->framedesc->cmd |= max_videosize / 4;
-
-	return 0;
-
-err_free_framedesc:
-	dma_free_coherent(&jzfb->pdev->dev, sizeof(*jzfb->framedesc),
-				jzfb->framedesc, jzfb->framedesc_phys);
-	return -ENOMEM;
-}
-
-static void jzfb_free_devmem(struct jzfb *jzfb)
-{
-	dma_free_coherent(&jzfb->pdev->dev, jzfb->vidmem_size,
-				jzfb->vidmem, jzfb->vidmem_phys);
-	dma_free_coherent(&jzfb->pdev->dev, sizeof(*jzfb->framedesc),
-				jzfb->framedesc, jzfb->framedesc_phys);
-}
-
-static struct  fb_ops jzfb_ops = {
-	.owner = THIS_MODULE,
-	.fb_check_var = jzfb_check_var,
-	.fb_set_par = jzfb_set_par,
-	.fb_blank = jzfb_blank,
-	.fb_fillrect	= sys_fillrect,
-	.fb_copyarea	= sys_copyarea,
-	.fb_imageblit	= sys_imageblit,
-	.fb_setcolreg = jzfb_setcolreg,
-};
-
-static int jzfb_probe(struct platform_device *pdev)
-{
-	int ret;
-	struct jzfb *jzfb;
-	struct fb_info *fb;
-	struct jz4740_fb_platform_data *pdata = pdev->dev.platform_data;
-	struct resource *mem;
-
-	if (!pdata) {
-		dev_err(&pdev->dev, "Missing platform data\n");
-		return -ENXIO;
-	}
-
-	fb = framebuffer_alloc(sizeof(struct jzfb), &pdev->dev);
-	if (!fb)
-		return -ENOMEM;
-
-	fb->fbops = &jzfb_ops;
-	fb->flags = FBINFO_DEFAULT;
-
-	jzfb = fb->par;
-	jzfb->pdev = pdev;
-	jzfb->pdata = pdata;
-
-	jzfb->ldclk = devm_clk_get(&pdev->dev, "lcd");
-	if (IS_ERR(jzfb->ldclk)) {
-		ret = PTR_ERR(jzfb->ldclk);
-		dev_err(&pdev->dev, "Failed to get lcd clock: %d\n", ret);
-		goto err_framebuffer_release;
-	}
-
-	jzfb->lpclk = devm_clk_get(&pdev->dev, "lcd_pclk");
-	if (IS_ERR(jzfb->lpclk)) {
-		ret = PTR_ERR(jzfb->lpclk);
-		dev_err(&pdev->dev, "Failed to get lcd pixel clock: %d\n", ret);
-		goto err_framebuffer_release;
-	}
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	jzfb->base = devm_ioremap_resource(&pdev->dev, mem);
-	if (IS_ERR(jzfb->base)) {
-		ret = PTR_ERR(jzfb->base);
-		goto err_framebuffer_release;
-	}
-
-	platform_set_drvdata(pdev, jzfb);
-
-	mutex_init(&jzfb->lock);
-
-	fb_videomode_to_modelist(pdata->modes, pdata->num_modes,
-				 &fb->modelist);
-	fb_videomode_to_var(&fb->var, pdata->modes);
-	fb->var.bits_per_pixel = pdata->bpp;
-	jzfb_check_var(&fb->var, fb);
-
-	ret = jzfb_alloc_devmem(jzfb);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to allocate video memory\n");
-		goto err_framebuffer_release;
-	}
-
-	fb->fix = jzfb_fix;
-	fb->fix.line_length = fb->var.bits_per_pixel * fb->var.xres / 8;
-	fb->fix.mmio_start = mem->start;
-	fb->fix.mmio_len = resource_size(mem);
-	fb->fix.smem_start = jzfb->vidmem_phys;
-	fb->fix.smem_len =  fb->fix.line_length * fb->var.yres;
-	fb->screen_base = jzfb->vidmem;
-	fb->pseudo_palette = jzfb->pseudo_palette;
-
-	fb_alloc_cmap(&fb->cmap, 256, 0);
-
-	clk_prepare_enable(jzfb->ldclk);
-	jzfb->is_enabled = 1;
-
-	writel(jzfb->framedesc->next, jzfb->base + JZ_REG_LCD_DA0);
-
-	fb->mode = NULL;
-	jzfb_set_par(fb);
-
-	ret = register_framebuffer(fb);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to register framebuffer: %d\n", ret);
-		goto err_free_devmem;
-	}
-
-	jzfb->fb = fb;
-
-	return 0;
-
-err_free_devmem:
-	fb_dealloc_cmap(&fb->cmap);
-	jzfb_free_devmem(jzfb);
-err_framebuffer_release:
-	framebuffer_release(fb);
-	return ret;
-}
-
-static int jzfb_remove(struct platform_device *pdev)
-{
-	struct jzfb *jzfb = platform_get_drvdata(pdev);
-
-	jzfb_blank(FB_BLANK_POWERDOWN, jzfb->fb);
-
-	fb_dealloc_cmap(&jzfb->fb->cmap);
-	jzfb_free_devmem(jzfb);
-
-	framebuffer_release(jzfb->fb);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-
-static int jzfb_suspend(struct device *dev)
-{
-	struct jzfb *jzfb = dev_get_drvdata(dev);
-
-	console_lock();
-	fb_set_suspend(jzfb->fb, 1);
-	console_unlock();
-
-	mutex_lock(&jzfb->lock);
-	if (jzfb->is_enabled)
-		jzfb_disable(jzfb);
-	mutex_unlock(&jzfb->lock);
-
-	return 0;
-}
-
-static int jzfb_resume(struct device *dev)
-{
-	struct jzfb *jzfb = dev_get_drvdata(dev);
-	clk_prepare_enable(jzfb->ldclk);
-
-	mutex_lock(&jzfb->lock);
-	if (jzfb->is_enabled)
-		jzfb_enable(jzfb);
-	mutex_unlock(&jzfb->lock);
-
-	console_lock();
-	fb_set_suspend(jzfb->fb, 0);
-	console_unlock();
-
-	return 0;
-}
-
-static const struct dev_pm_ops jzfb_pm_ops = {
-	.suspend	= jzfb_suspend,
-	.resume		= jzfb_resume,
-	.poweroff	= jzfb_suspend,
-	.restore	= jzfb_resume,
-};
-
-#define JZFB_PM_OPS (&jzfb_pm_ops)
-
-#else
-#define JZFB_PM_OPS NULL
-#endif
-
-static struct platform_driver jzfb_driver = {
-	.probe = jzfb_probe,
-	.remove = jzfb_remove,
-	.driver = {
-		.name = "jz4740-fb",
-		.pm = JZFB_PM_OPS,
-	},
-};
-module_platform_driver(jzfb_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_DESCRIPTION("JZ4740 SoC LCD framebuffer driver");
-MODULE_ALIAS("platform:jz4740-fb");

include/dt-bindings/clock/ingenic,tcu.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides clock numbers for the ingenic,tcu DT binding.
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_INGENIC_TCU_H__
+#define __DT_BINDINGS_CLOCK_INGENIC_TCU_H__
+
+#define TCU_CLK_TIMER0	0
+#define TCU_CLK_TIMER1	1
+#define TCU_CLK_TIMER2	2
+#define TCU_CLK_TIMER3	3
+#define TCU_CLK_TIMER4	4
+#define TCU_CLK_TIMER5	5
+#define TCU_CLK_TIMER6	6
+#define TCU_CLK_TIMER7	7
+#define TCU_CLK_WDT	8
+#define TCU_CLK_OST	9
+
+#endif /* __DT_BINDINGS_CLOCK_INGENIC_TCU_H__ */

include/dt-bindings/clock/jz4740-cgu.h

···
 #define JZ4740_CLK_ADC		19
 #define JZ4740_CLK_I2C		20
 #define JZ4740_CLK_AIC		21
+#define JZ4740_CLK_TCU		22
 
 #endif /* __DT_BINDINGS_CLOCK_JZ4740_CGU_H__ */

include/linux/mfd/syscon.h

···
 struct device_node;
 
 #ifdef CONFIG_MFD_SYSCON
+extern struct regmap *device_node_to_regmap(struct device_node *np);
 extern struct regmap *syscon_node_to_regmap(struct device_node *np);
 extern struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
 extern struct regmap *syscon_regmap_lookup_by_phandle(
 					struct device_node *np,
 					const char *property);
 #else
+static inline struct regmap *device_node_to_regmap(struct device_node *np)
+{
+	return ERR_PTR(-ENOTSUPP);
+}
+
 static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
 {
 	return ERR_PTR(-ENOTSUPP);

sound/soc/jz4740/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
-config SND_JZ4740_SOC
-	tristate "SoC Audio for Ingenic JZ4740 SoC"
-	depends on MIPS || COMPILE_TEST
-	select SND_SOC_GENERIC_DMAENGINE_PCM
-	help
-	  Say Y or M if you want to add support for codecs attached to
-	  the JZ4740 I2S interface. You will also need to select the audio
-	  interfaces to support below.
-
-if SND_JZ4740_SOC
-
 config SND_JZ4740_SOC_I2S
 	tristate "SoC Audio (I2S protocol) for Ingenic JZ4740 SoC"
+	depends on MIPS || COMPILE_TEST
 	depends on HAS_IOMEM
+	select SND_SOC_GENERIC_DMAENGINE_PCM
 	help
 	  Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740
 	  based boards.
-
-config SND_JZ4740_SOC_QI_LB60
-	tristate "SoC Audio support for Qi LB60"
-	depends on HAS_IOMEM
-	depends on JZ4740_QI_LB60 || COMPILE_TEST
-	select SND_JZ4740_SOC_I2S
-    select SND_SOC_JZ4740_CODEC
-	help
-	  Say Y if you want to add support for ASoC audio on the Qi LB60 board
-	  a.k.a Qi Ben NanoNote.
-
-endif

sound/soc/jz4740/Makefile

···
 snd-soc-jz4740-i2s-objs := jz4740-i2s.o
 
 obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
-
-# Jz4740 Machine Support
-snd-soc-qi-lb60-objs := qi_lb60.o
-
-obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o

sound/soc/jz4740/qi_lb60.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2009, Lars-Peter Clausen <[e-mail]>
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-#include <linux/gpio/consumer.h>
-
-struct qi_lb60 {
-	struct gpio_desc *snd_gpio;
-	struct gpio_desc *amp_gpio;
-};
-
-static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
-			     struct snd_kcontrol *ctrl, int event)
-{
-	struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
-	int on = !SND_SOC_DAPM_EVENT_OFF(event);
-
-	gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
-	gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
-
-	return 0;
-}
-
-static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
-	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
-	SND_SOC_DAPM_MIC("Mic", NULL),
-};
-
-static const struct snd_soc_dapm_route qi_lb60_routes[] = {
-	{"Mic", NULL, "MIC"},
-	{"Speaker", NULL, "LOUT"},
-	{"Speaker", NULL, "ROUT"},
-};
-
-SND_SOC_DAILINK_DEFS(hifi,
-	DAILINK_COMP_ARRAY(COMP_CPU("jz4740-i2s")),
-	DAILINK_COMP_ARRAY(COMP_CODEC("jz4740-codec", "jz4740-hifi")),
-	DAILINK_COMP_ARRAY(COMP_PLATFORM("jz4740-i2s")));
-
-static struct snd_soc_dai_link qi_lb60_dai = {
-	.name = "jz4740",
-	.stream_name = "jz4740",
-	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-		SND_SOC_DAIFMT_CBM_CFM,
-	SND_SOC_DAILINK_REG(hifi),
-};
-
-static struct snd_soc_card qi_lb60_card = {
-	.name = "QI LB60",
-	.owner = THIS_MODULE,
-	.dai_link = &qi_lb60_dai,
-	.num_links = 1,
-
-	.dapm_widgets = qi_lb60_widgets,
-	.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
-	.dapm_routes = qi_lb60_routes,
-	.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
-	.fully_routed = true,
-};
-
-static int qi_lb60_probe(struct platform_device *pdev)
-{
-	struct qi_lb60 *qi_lb60;
-	struct snd_soc_card *card = &qi_lb60_card;
-
-	qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
-	if (!qi_lb60)
-		return -ENOMEM;
-
-	qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd", GPIOD_OUT_LOW);
-	if (IS_ERR(qi_lb60->snd_gpio))
-		return PTR_ERR(qi_lb60->snd_gpio);
-
-	qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp", GPIOD_OUT_LOW);
-	if (IS_ERR(qi_lb60->amp_gpio))
-		return PTR_ERR(qi_lb60->amp_gpio);
-
-	card->dev = &pdev->dev;
-
-	snd_soc_card_set_drvdata(card, qi_lb60);
-
-	return devm_snd_soc_register_card(&pdev->dev, card);
-}
-
-static struct platform_driver qi_lb60_driver = {
-	.driver		= {
-		.name	= "qi-lb60-audio",
-	},
-	.probe		= qi_lb60_probe,
-};
-
-module_platform_driver(qi_lb60_driver);
-
-MODULE_AUTHOR("Lars-Peter Clausen <[e-mail]>");
-MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:qi-lb60-audio");