Merge branch 'sunplus/newsoc' into arm/newsoc

Merge "Sunplus SP7021 SoC support" from Qin Jian, applied
as patches:

"Sunplus SP7021 is an ARM Cortex A7 (4 cores) based SoC. It integrates many
peripherals (ex: UART, I2C, SPI, SDIO, eMMC, USB, SD card and etc.) into a
single chip. It is designed for industrial control.

SP7021 consists of two chips (dies) in a package. One is called C-chip
(computing chip). It is a 4-core ARM Cortex A7 CPU. It adopts high-level
process (22 nm) for high performance computing. The other is called P-
chip (peripheral chip). It has many peripherals and an ARM A926 added
especially for real-time control. P-chip is made for customers. It adopts
low-level process (ex: 0.11 um) to reduce cost.

Refer to (for documentations):
https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview

Refer to (applications):
https://tibbo.com/store/plus1.html

Refer to (applications):
http://www.sinovoip.com.cn/ecp_view.asp?id=586"

I left out the clock controller driver, which is still not fully
reviewed. There have been 20 revisions of the platform code, and
everything else looks good enough, so I hope it's we can simplify
the process by separating it out again.

Link: https://lore.kernel.org/linux-arm-kernel/[e-mail]/

* sunplus/newsoc:
ARM: dts: Add Sunplus SP7021-Demo-V3 board device tree
ARM: sp7021_defconfig: Add Sunplus SP7021 defconfig
ARM: sunplus: Add initial support for Sunplus SP7021 SoC
irqchip: Add Sunplus SP7021 interrupt controller driver
dt-bindings: interrupt-controller: Add bindings for SP7021 interrupt controller
dt-bindings: clock: Add bindings for SP7021 clock driver
reset: Add Sunplus SP7021 reset driver
dt-bindings: reset: Add bindings for SP7021 reset driver
dt-bindings: arm: sunplus: Add bindings for Sunplus SP7021 SoC boards

Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/sunplus,sp7021.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 Boards
+
+maintainers:
+  - qinjian <[e-mail]>
+
+description: |
+  ARM platforms using Sunplus SP7021, an ARM Cortex A7 (4-cores) based SoC.
+  Wiki: https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    items:
+      - enum:
+          - sunplus,sp7021-achip
+          - sunplus,sp7021-demo-v3
+      - const: sunplus,sp7021
+
+additionalProperties: true
+
+...

Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/sunplus,sp7021-clkc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 SoC Clock Controller
+
+maintainers:
+  - Qin Jian <[e-mail]>
+
+properties:
+  compatible:
+    const: sunplus,sp7021-clkc
+
+  reg:
+    maxItems: 3
+
+  clocks:
+    maxItems: 1
+
+  "#clock-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    extclk: osc0 {
+      compatible = "fixed-clock";
+      #clock-cells = <0>;
+      clock-frequency = <27000000>;
+      clock-output-names = "extclk";
+    };
+
+    clkc: clock-controller@9c000004 {
+      compatible = "sunplus,sp7021-clkc";
+      reg = <0x9c000004 0x28>,
+            <0x9c000200 0x44>,
+            <0x9c000268 0x08>;
+      clocks = <&extclk>;
+      #clock-cells = <1>;
+    };
+
+...

Documentation/devicetree/bindings/interrupt-controller/sunplus,sp7021-intc.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/sunplus,sp7021-intc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 SoC Interrupt Controller
+
+maintainers:
+  - Qin Jian <[e-mail]>
+
+properties:
+  compatible:
+    items:
+      - const: sunplus,sp7021-intc
+
+  reg:
+    maxItems: 2
+    description:
+      Specifies base physical address(s) and size of the controller regs.
+      The 1st region include type/polarity/priority/mask regs.
+      The 2nd region include clear/masked_ext0/masked_ext1/group regs.
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+    description:
+      The first cell is the IRQ number, the second cell is the trigger
+      type as defined in interrupt.txt in this directory.
+
+  interrupts:
+    maxItems: 2
+    description:
+      EXT_INT0 & EXT_INT1, 2 interrupts references to primary interrupt
+      controller.
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - "#interrupt-cells"
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    intc: interrupt-controller@9c000780 {
+        compatible = "sunplus,sp7021-intc";
+        reg = <0x9c000780 0x80>, <0x9c000a80 0x80>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupt-parent = <&gic>;
+        interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, /* EXT_INT0 */
+                     <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>; /* EXT_INT1 */
+    };
+
+...

Documentation/devicetree/bindings/reset/sunplus,reset.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/sunplus,reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Sunplus SoC Reset Controller
+
+maintainers:
+  - Qin Jian <[e-mail]>
+
+properties:
+  compatible:
+    const: sunplus,sp7021-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    rstc: reset@9c000054 {
+      compatible = "sunplus,sp7021-reset";
+      reg = <0x9c000054 0x28>;
+      #reset-cells = <1>;
+    };
+
+...

MAINTAINERS

···
 N:	stm32
 N:	stm
 
+ARM/SUNPLUS SP7021 SOC SUPPORT
+M:	Qin Jian <[e-mail]>
+L:	[e-mail] (moderated for mon-subscribers)
+S:	Maintained
+W:	https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
+F:	Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
+F:	Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
+F:	Documentation/devicetree/bindings/interrupt-controller/sunplus,sp7021-intc.yaml
+F:	Documentation/devicetree/bindings/reset/sunplus,reset.yaml
+F:	arch/arm/boot/dts/sunplus-sp7021*.dts*
+F:	arch/arm/configs/sp7021_*defconfig
+F:	arch/arm/mach-sunplus/
+F:	drivers/irqchip/irq-sp7021-intc.c
+F:	drivers/reset/reset-sunplus.c
+F:	include/dt-bindings/clock/sunplus,sp7021-clkc.h
+F:	include/dt-bindings/reset/sunplus,sp7021-reset.h
+
 ARM/Synaptics SoC support
 M:	Jisheng Zhang <[e-mail]>
 M:	Sebastian Hesselbarth <[e-mail]>

arch/arm/Kconfig

···
 
 source "arch/arm/mach-stm32/Kconfig"
 
+source "arch/arm/mach-sunplus/Kconfig"
+
 source "arch/arm/mach-sunxi/Kconfig"
 
 source "arch/arm/mach-tegra/Kconfig"

arch/arm/Makefile

···
 machine-$(CONFIG_ARCH_INTEL_SOCFPGA)	+= socfpga
 machine-$(CONFIG_ARCH_STI)		+= sti
 machine-$(CONFIG_ARCH_STM32)		+= stm32
+machine-$(CONFIG_ARCH_SUNPLUS)		+= sunplus
 machine-$(CONFIG_ARCH_SUNXI)		+= sunxi
 machine-$(CONFIG_ARCH_TEGRA)		+= tegra
 machine-$(CONFIG_ARCH_U8500)		+= ux500

arch/arm/boot/dts/Makefile

···
 	at91-vinco.dtb
 dtb-$(CONFIG_SOC_SAMA7G5) += \
 	at91-sama7g5ek.dtb
+dtb-$(CONFIG_SOC_SP7021) += \
+	sunplus-sp7021-demo-v3.dtb
 dtb-$(CONFIG_ARCH_AXXIA) += \
 	axm5516-amarillo.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += \

arch/arm/boot/dts/sunplus-sp7021-achip.dtsi

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for Sunplus SP7021
+ *
+ * Copyright (C) 2021 Sunplus Technology Co.
+ */
+
+#include "sunplus-sp7021.dtsi"
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "sunplus,sp7021-achip", "sunplus,sp7021";
+	model = "Sunplus SP7021 (CA7)";
+	#address-cells = <1>;
+	#size-cells = <1>;
+	interrupt-parent = <&gic>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <0>;
+			clock-frequency = <931000000>;
+		};
+		cpu1: cpu@1 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <1>;
+			clock-frequency = <931000000>;
+		};
+		cpu2: cpu@2 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <2>;
+			clock-frequency = <931000000>;
+		};
+		cpu3: cpu@3 {
+			compatible = "arm,cortex-a7";
+			device_type = "cpu";
+			reg = <3>;
+			clock-frequency = <931000000>;
+		};
+	};
+
+	gic: interrupt-controller@9f101000 {
+		compatible = "arm,cortex-a7-gic";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		reg = <0x9f101000 0x1000>,
+		      <0x9f102000 0x2000>,
+		      <0x9f104000 0x2000>,
+		      <0x9f106000 0x2000>;
+	};
+
+	timer {
+		compatible = "arm,armv7-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+		clock-frequency = <XTAL>;
+		arm,cpu-registers-not-fw-configured;
+	};
+
+	arm-pmu {
+		compatible = "arm,cortex-a7-pmu";
+		interrupts = <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 220 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 222 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-affinity = <&cpu0>, <&cpu1>, <&cpu2>, <&cpu3>;
+	};
+
+	soc@9c000000 {
+		intc: interrupt-controller@780 {
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, /* EXT_INT0 */
+				     <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>; /* EXT_INT1 */
+		};
+	};
+};

arch/arm/boot/dts/sunplus-sp7021-demo-v3.dts

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for Sunplus SP7021 Demo V3 SBC board
+ *
+ * Copyright (C) Sunplus Technology Co.
+ */
+
+/dts-v1/;
+
+#include "sunplus-sp7021-achip.dtsi"
+
+/ {
+	compatible = "sunplus,sp7021-demo-v3", "sunplus,sp7021";
+	model = "Sunplus SP7021/CA7/Demo_V3";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x00000000 0x20000000>;
+	};
+};

arch/arm/boot/dts/sunplus-sp7021.dtsi

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for Sunplus SP7021
+ *
+ * Copyright (C) 2021 Sunplus Technology Co.
+ */
+
+#include <dt-bindings/clock/sunplus,sp7021-clkc.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/reset/sunplus,sp7021-reset.h>
+#include <dt-bindings/pinctrl/sppctl-sp7021.h>
+#include <dt-bindings/gpio/gpio.h>
+
+#define XTAL	27000000
+
+/ {
+	compatible = "sunplus,sp7021";
+	model = "Sunplus SP7021";
+
+	clocks {
+		extclk: osc0 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <XTAL>;
+			clock-output-names = "extclk";
+		};
+	};
+
+	soc@9c000000 {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0 0x9c000000 0x400000>;
+		interrupt-parent = <&intc>;
+
+		clkc: clock-controller@4 {
+			compatible = "sunplus,sp7021-clkc";
+			reg = <0x4 0x28>,
+			      <0x200 0x44>,
+			      <0x268 0x04>;
+			clocks = <&extclk>;
+			#clock-cells = <1>;
+		};
+
+		intc: interrupt-controller@780 {
+			compatible = "sunplus,sp7021-intc";
+			reg = <0x780 0x80>, <0xa80 0x80>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		otp: otp@af00 {
+			compatible = "sunplus,sp7021-ocotp";
+			reg = <0xaf00 0x34>, <0xaf80 0x58>;
+			reg-names = "hb_gpio", "otprx";
+			clocks = <&clkc CLK_OTPRX>;
+			resets = <&rstc RST_OTPRX>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			therm_calib: thermal-calibration@14 {
+				reg = <0x14 0x3>;
+			};
+			disc_vol: disconnect-voltage@18 {
+				reg = <0x18 0x2>;
+			};
+			mac_addr0: mac-address0@34 {
+				reg = <0x34 0x6>;
+			};
+			mac_addr1: mac-address1@3a {
+				reg = <0x3a 0x6>;
+			};
+		};
+
+		pctl: pinctrl@100 {
+			compatible = "sunplus,sp7021-pctl";
+			reg = <0x100 0x100>,
+			      <0x300 0x100>,
+			      <0x32e4 0x1C>,
+			      <0x80 0x20>;
+			reg-names = "moon2", "gpioxt", "first", "moon1";
+			gpio-controller;
+			#gpio-cells = <2>;
+			clocks = <&clkc CLK_GPIO>;
+			resets = <&rstc RST_GPIO>;
+
+			emac_pins: pinmux-emac-pins {
+				sunplus,pins = <
+					SPPCTL_IOPAD(49,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_CLK_OUT,0)
+					SPPCTL_IOPAD(44,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_MAC_SMI_MDC,0)
+					SPPCTL_IOPAD(43,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_MAC_SMI_MDIO,0)
+					SPPCTL_IOPAD(52,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_TXEN,0)
+					SPPCTL_IOPAD(50,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_TXD0,0)
+					SPPCTL_IOPAD(51,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_TXD1,0)
+					SPPCTL_IOPAD(46,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_CRSDV,0)
+					SPPCTL_IOPAD(47,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_RXD0,0)
+					SPPCTL_IOPAD(48,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_RXD1,0)
+					SPPCTL_IOPAD(45,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P0_MAC_RMII_RXER,0)
+					SPPCTL_IOPAD(59,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_TXEN,0)
+					SPPCTL_IOPAD(57,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_TXD0,0)
+					SPPCTL_IOPAD(58,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_TXD1,0)
+					SPPCTL_IOPAD(54,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_CRSDV,0)
+					SPPCTL_IOPAD(55,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_RXD0,0)
+					SPPCTL_IOPAD(56,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_RXD1,0)
+					SPPCTL_IOPAD(53,SPPCTL_PCTL_G_PMUX,MUXF_L2SW_P1_MAC_RMII_RXER,0)
+				>;
+				sunplus,zerofunc = <
+					MUXF_L2SW_LED_FLASH0
+					MUXF_L2SW_LED_FLASH1
+					MUXF_L2SW_LED_ON0
+					MUXF_L2SW_LED_ON1
+					MUXF_DAISY_MODE
+				>;
+			};
+
+			emmc_pins: pinmux-emmc-pins {
+				function = "CARD0_EMMC";
+				groups = "CARD0_EMMC";
+			};
+
+			leds_pins: pinmux-leds-pins {
+				sunplus,pins = < SPPCTL_IOPAD(0,SPPCTL_PCTL_G_GPIO,0,SPPCTL_PCTL_L_OUT) >;
+			};
+
+			sdcard_pins: pinmux-sdcard-pins {
+				function = "SD_CARD";
+				groups = "SD_CARD";
+				sunplus,pins = < SPPCTL_IOPAD(91, SPPCTL_PCTL_G_GPIO, 0, 0) >;
+			};
+
+			spi0_pins: pinmux-spi0-pins {
+				sunplus,pins = <
+					SPPCTL_IOPAD(26,SPPCTL_PCTL_G_GPIO,0,0)
+					SPPCTL_IOPAD(28,SPPCTL_PCTL_G_GPIO,0,0)
+					SPPCTL_IOPAD(23,SPPCTL_PCTL_G_PMUX,MUXF_SPI0S_DO,0)
+					SPPCTL_IOPAD(25,SPPCTL_PCTL_G_PMUX,MUXF_SPI0S_DI,0)
+					SPPCTL_IOPAD(27,SPPCTL_PCTL_G_PMUX,MUXF_SPI0S_CLK,0)
+				>;
+			};
+
+			uart0_pins: pinmux-uart0-pins {
+				function = "UA0";
+				groups = "UA0";
+			};
+
+			uart1_pins: pinmux-uart1-pins {
+				sunplus,pins = <
+					SPPCTL_IOPAD(14,SPPCTL_PCTL_G_PMUX,MUXF_UA4_TX,0)
+					SPPCTL_IOPAD(16,SPPCTL_PCTL_G_PMUX,MUXF_UA4_RX,0)
+				>;
+			};
+
+			uart2_pins: pinmux-uart2-pins {
+				sunplus,pins = <
+					SPPCTL_IOPAD(16,SPPCTL_PCTL_G_PMUX,MUXF_UA2_TX,0)
+					SPPCTL_IOPAD(17,SPPCTL_PCTL_G_PMUX,MUXF_UA2_RX,0)
+					SPPCTL_IOPAD(18,SPPCTL_PCTL_G_PMUX,MUXF_UA2_RTS,0)
+					SPPCTL_IOPAD(19,SPPCTL_PCTL_G_PMUX,MUXF_UA2_CTS,0)
+				>;
+			};
+
+			uart4_pins: pinmux-uart4-pins {
+				sunplus,pins = <
+					SPPCTL_IOPAD(22,SPPCTL_PCTL_G_PMUX,MUXF_UA4_TX,0)
+					SPPCTL_IOPAD(20,SPPCTL_PCTL_G_PMUX,MUXF_UA4_RX,0)
+					SPPCTL_IOPAD(23,SPPCTL_PCTL_G_PMUX,MUXF_UA4_RTS,0)
+					SPPCTL_IOPAD(21,SPPCTL_PCTL_G_PMUX,MUXF_UA4_CTS,0)
+				>;
+			};
+		};
+
+		rstc: reset@54 {
+			compatible = "sunplus,sp7021-reset";
+			reg = <0x54 0x28>;
+			#reset-cells = <1>;
+		};
+
+		rtc: rtc@3a00 {
+			compatible = "sunplus,sp7021-rtc";
+			reg = <0x3a00 0x80>;
+			reg-names = "rtc";
+			clocks = <&clkc CLK_RTC>;
+			resets = <&rstc RST_RTC>;
+			interrupts = <163 IRQ_TYPE_EDGE_RISING>;
+		};
+
+		spi_controller0: spi@2d80 {
+			compatible = "sunplus,sp7021-spi";
+			reg = <0x2d80 0x80>, <0x2e00 0x80>;
+			reg-names = "master", "slave";
+			interrupts = <144 IRQ_TYPE_LEVEL_HIGH>,
+				     <146 IRQ_TYPE_LEVEL_HIGH>,
+				     <145 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "dma_w", "master_risc", "slave_risc";
+			clocks = <&clkc CLK_SPI_COMBO_0>;
+			resets = <&rstc RST_SPI_COMBO_0>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&spi0_pins>;
+			cs-gpios = <&pctl 26 GPIO_ACTIVE_LOW>,
+				   <&pctl 28 GPIO_ACTIVE_LOW>;
+		};
+
+		spi_controller1: spi@f480 {
+			compatible = "sunplus,sp7021-spi";
+			reg = <0xf480 0x80>, <0xf500 0x80>;
+			reg-names = "master", "slave";
+			interrupts = <67 IRQ_TYPE_LEVEL_HIGH>,
+				     <69 IRQ_TYPE_LEVEL_HIGH>,
+				     <68 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "dma_w", "master_risc", "slave_risc";
+			clocks = <&clkc CLK_SPI_COMBO_1>;
+			resets = <&rstc RST_SPI_COMBO_1>;
+			spi-max-frequency = <25000000>;
+			status = "disabled";
+		};
+
+		spi_controller2: spi@f600 {
+			compatible = "sunplus,sp7021-spi";
+			reg = <0xf600 0x80>, <0xf680 0x80>;
+			reg-names = "master", "slave";
+			interrupts = <70 IRQ_TYPE_LEVEL_HIGH>,
+				     <72 IRQ_TYPE_LEVEL_HIGH>,
+				     <71 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "dma_w", "master_risc", "slave_risc";
+			clocks = <&clkc CLK_SPI_COMBO_2>;
+			resets = <&rstc RST_SPI_COMBO_2>;
+			spi-max-frequency = <25000000>;
+			status = "disabled";
+		};
+
+		spi_controller3: spi@f780 {
+			compatible = "sunplus,sp7021-spi";
+			reg = <0xf780 0x80>, <0xf800 0x80>;
+			reg-names = "master", "slave";
+			interrupts = <73 IRQ_TYPE_LEVEL_HIGH>,
+				     <75 IRQ_TYPE_LEVEL_HIGH>,
+				     <74 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "dma_w", "master_risc", "slave_risc";
+			clocks = <&clkc CLK_SPI_COMBO_3>;
+			resets = <&rstc RST_SPI_COMBO_3>;
+			spi-max-frequency = <25000000>;
+			status = "disabled";
+		};
+
+		uart0: serial@900 {
+			compatible = "sunplus,sp7021-uart";
+			reg = <0x900 0x80>;
+			interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkc CLK_UA0>;
+			resets = <&rstc RST_UA0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart0_pins>;
+		};
+
+		uart1: serial@980 {
+			compatible = "sunplus,sp7021-uart";
+			reg = <0x980 0x80>;
+			interrupts = <54 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkc CLK_UA1>;
+			resets = <&rstc RST_UA1>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart1_pins>;
+			status = "disabled";
+		};
+
+		uart2: serial@800 {
+			compatible = "sunplus,sp7021-uart";
+			reg = <0x800 0x80>;
+			interrupts = <55 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkc CLK_UA2>;
+			resets = <&rstc RST_UA2>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart2_pins>;
+			status = "disabled";
+		};
+
+		uart3: serial@880 {
+			compatible = "sunplus,sp7021-uart";
+			reg = <0x880 0x80>;
+			interrupts = <56 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkc CLK_UA3>;
+			resets = <&rstc RST_UA3>;
+			status = "disabled";
+		};
+
+		uart4: serial@8780 {
+			compatible = "sunplus,sp7021-uart";
+			reg = <0x8780 0x80>;
+			interrupts = <134 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clkc CLK_UA4>;
+			resets = <&rstc RST_UA4>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart4_pins>;
+			status = "disabled";
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&leds_pins>;
+		system-led {
+			label = "system-led";
+			gpios = <&pctl 0 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};

arch/arm/configs/multi_v7_defconfig

···
 CONFIG_MACH_SPEAR1340=y
 CONFIG_ARCH_STI=y
 CONFIG_ARCH_STM32=y
+CONFIG_ARCH_SUNPLUS=y
 CONFIG_ARCH_SUNXI=y
 CONFIG_ARCH_TEGRA=y
 CONFIG_ARCH_UNIPHIER=y

arch/arm/configs/sp7021_defconfig

···
+CONFIG_SYSVIPC=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_RD_GZIP is not set
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_RD_XZ is not set
+# CONFIG_RD_LZO is not set
+# CONFIG_RD_LZ4 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_PERF_EVENTS=y
+CONFIG_SLAB=y
+CONFIG_ARCH_SUNPLUS=y
+# CONFIG_VDSO is not set
+CONFIG_SMP=y
+CONFIG_THUMB2_KERNEL=y
+CONFIG_FORCE_MAX_ZONEORDER=12
+CONFIG_VFP=y
+CONFIG_NEON=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_MODVERSIONS=y
+# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
+CONFIG_UEVENT_HELPER=y
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_INPUT_SPARSEKMAP=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_HWMON is not set
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_RESET_CONTROLLER=y
+CONFIG_EXT4_FS=y
+# CONFIG_DNOTIFY is not set
+CONFIG_FANOTIFY=y
+CONFIG_VFAT_FS=y
+CONFIG_FAT_DEFAULT_IOCHARSET="utf8"
+CONFIG_EXFAT_FS=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ASCII=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_UTF8=y
+CONFIG_PRINTK_TIME=y
+CONFIG_DYNAMIC_DEBUG=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_USER=y

arch/arm/mach-sunplus/Kconfig

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+menuconfig ARCH_SUNPLUS
+	bool "Sunplus SoCs"
+	depends on ARCH_MULTI_V7
+	help
+	  Support for Sunplus SoC family: SP7021 and succeeding SoC-based systems,
+	  such as the Banana Pi BPI-F2S development board (and derivatives).
+	  (<http://www.sinovoip.com.cn/ecp_view.asp?id=586>)
+	  (<https://tibbo.com/store/plus1.html>)
+
+config SOC_SP7021
+	bool "Sunplus SP7021 SoC support"
+	depends on ARCH_SUNPLUS
+	default ARCH_SUNPLUS
+	select HAVE_ARM_ARCH_TIMER
+	select ARM_GIC
+	select ARM_PSCI
+	select PINCTRL
+	select PINCTRL_SPPCTL
+	select SERIAL_SUNPLUS
+	select SERIAL_SUNPLUS_CONSOLE
+	help
+	  Support for Sunplus SP7021 SoC. It is based on ARM 4-core
+	  Cortex-A7 with various peripherals (e.g.: I2C, SPI, SDIO,
+	  Ethernet, etc.), FPGA interface,  chip-to-chip bus.
+	  It is designed for industrial control.

arch/arm/mach-sunplus/Makefile

···
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-$(CONFIG_SOC_SP7021)	+= sp7021.o

arch/arm/mach-sunplus/sp7021.c

···
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+#include <linux/kernel.h>
+#include <asm/mach/arch.h>
+
+static const char *sp7021_compat[] __initconst = {
+	"sunplus,sp7021",
+	NULL
+};
+
+DT_MACHINE_START(SP7021_DT, "SP7021")
+	.dt_compat	= sp7021_compat,
+MACHINE_END

drivers/irqchip/Kconfig

···
 	help
 	  Support for Microchip External Interrupt Controller.
 
+config SUNPLUS_SP7021_INTC
+	bool "Sunplus SP7021 interrupt controller" if COMPILE_TEST
+	default SOC_SP7021
+	help
+	  Support for the Sunplus SP7021 Interrupt Controller IP core.
+	  SP7021 SoC has 2 Chips: C-Chip & P-Chip. This is used as a
+	  chained controller, routing all interrupt source in P-Chip to
+	  the primary controller on C-Chip.
+
 endmenu

drivers/irqchip/Makefile

···
 obj-$(CONFIG_IRQ_IDT3243X)		+= irq-idt3243x.o
 obj-$(CONFIG_APPLE_AIC)			+= irq-apple-aic.o
 obj-$(CONFIG_MCHP_EIC)			+= irq-mchp-eic.o
+obj-$(CONFIG_SUNPLUS_SP7021_INTC)	+= irq-sp7021-intc.o

drivers/irqchip/irq-sp7021-intc.c

···
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/io.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+#define SP_INTC_HWIRQ_MIN	0
+#define SP_INTC_HWIRQ_MAX	223
+
+#define SP_INTC_NR_IRQS		(SP_INTC_HWIRQ_MAX - SP_INTC_HWIRQ_MIN + 1)
+#define SP_INTC_NR_GROUPS	DIV_ROUND_UP(SP_INTC_NR_IRQS, 32)
+#define SP_INTC_REG_SIZE	(SP_INTC_NR_GROUPS * 4)
+
+/* REG_GROUP_0 regs */
+#define REG_INTR_TYPE		(sp_intc.g0)
+#define REG_INTR_POLARITY	(REG_INTR_TYPE     + SP_INTC_REG_SIZE)
+#define REG_INTR_PRIORITY	(REG_INTR_POLARITY + SP_INTC_REG_SIZE)
+#define REG_INTR_MASK		(REG_INTR_PRIORITY + SP_INTC_REG_SIZE)
+
+/* REG_GROUP_1 regs */
+#define REG_INTR_CLEAR		(sp_intc.g1)
+#define REG_MASKED_EXT1		(REG_INTR_CLEAR    + SP_INTC_REG_SIZE)
+#define REG_MASKED_EXT0		(REG_MASKED_EXT1   + SP_INTC_REG_SIZE)
+#define REG_INTR_GROUP		(REG_INTR_CLEAR    + 31 * 4)
+
+#define GROUP_MASK		(BIT(SP_INTC_NR_GROUPS) - 1)
+#define GROUP_SHIFT_EXT1	(0)
+#define GROUP_SHIFT_EXT0	(8)
+
+/*
+ * When GPIO_INT0~7 set to edge trigger, doesn't work properly.
+ * WORKAROUND: change it to level trigger, and toggle the polarity
+ * at ACK/Handler to make the HW work.
+ */
+#define GPIO_INT0_HWIRQ		120
+#define GPIO_INT7_HWIRQ		127
+#define IS_GPIO_INT(irq)					\
+({								\
+	u32 i = irq;						\
+	(i >= GPIO_INT0_HWIRQ) && (i <= GPIO_INT7_HWIRQ);	\
+})
+
+/* index of states */
+enum {
+	_IS_EDGE = 0,
+	_IS_LOW,
+	_IS_ACTIVE
+};
+
+#define STATE_BIT(irq, idx)		(((irq) - GPIO_INT0_HWIRQ) * 3 + (idx))
+#define ASSIGN_STATE(irq, idx, v)	assign_bit(STATE_BIT(irq, idx), sp_intc.states, v)
+#define TEST_STATE(irq, idx)		test_bit(STATE_BIT(irq, idx), sp_intc.states)
+
+static struct sp_intctl {
+	/*
+	 * REG_GROUP_0: include type/polarity/priority/mask regs.
+	 * REG_GROUP_1: include clear/masked_ext0/masked_ext1/group regs.
+	 */
+	void __iomem *g0; // REG_GROUP_0 base
+	void __iomem *g1; // REG_GROUP_1 base
+
+	struct irq_domain *domain;
+	raw_spinlock_t lock;
+
+	/*
+	 * store GPIO_INT states
+	 * each interrupt has 3 states: is_edge, is_low, is_active
+	 */
+	DECLARE_BITMAP(states, (GPIO_INT7_HWIRQ - GPIO_INT0_HWIRQ + 1) * 3);
+} sp_intc;
+
+static struct irq_chip sp_intc_chip;
+
+static void sp_intc_assign_bit(u32 hwirq, void __iomem *base, bool value)
+{
+	u32 offset, mask;
+	unsigned long flags;
+	void __iomem *reg;
+
+	offset = (hwirq / 32) * 4;
+	reg = base + offset;
+
+	raw_spin_lock_irqsave(&sp_intc.lock, flags);
+	mask = readl_relaxed(reg);
+	if (value)
+		mask |= BIT(hwirq % 32);
+	else
+		mask &= ~BIT(hwirq % 32);
+	writel_relaxed(mask, reg);
+	raw_spin_unlock_irqrestore(&sp_intc.lock, flags);
+}
+
+static void sp_intc_ack_irq(struct irq_data *d)
+{
+	u32 hwirq = d->hwirq;
+
+	if (unlikely(IS_GPIO_INT(hwirq) && TEST_STATE(hwirq, _IS_EDGE))) { // WORKAROUND
+		sp_intc_assign_bit(hwirq, REG_INTR_POLARITY, !TEST_STATE(hwirq, _IS_LOW));
+		ASSIGN_STATE(hwirq, _IS_ACTIVE, true);
+	}
+
+	sp_intc_assign_bit(hwirq, REG_INTR_CLEAR, 1);
+}
+
+static void sp_intc_mask_irq(struct irq_data *d)
+{
+	sp_intc_assign_bit(d->hwirq, REG_INTR_MASK, 0);
+}
+
+static void sp_intc_unmask_irq(struct irq_data *d)
+{
+	sp_intc_assign_bit(d->hwirq, REG_INTR_MASK, 1);
+}
+
+static int sp_intc_set_type(struct irq_data *d, unsigned int type)
+{
+	u32 hwirq = d->hwirq;
+	bool is_edge = !(type & IRQ_TYPE_LEVEL_MASK);
+	bool is_low = (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_EDGE_FALLING);
+
+	irq_set_handler_locked(d, is_edge ? handle_edge_irq : handle_level_irq);
+
+	if (unlikely(IS_GPIO_INT(hwirq) && is_edge)) { // WORKAROUND
+		/* store states */
+		ASSIGN_STATE(hwirq, _IS_EDGE, is_edge);
+		ASSIGN_STATE(hwirq, _IS_LOW, is_low);
+		ASSIGN_STATE(hwirq, _IS_ACTIVE, false);
+		/* change to level */
+		is_edge = false;
+	}
+
+	sp_intc_assign_bit(hwirq, REG_INTR_TYPE, is_edge);
+	sp_intc_assign_bit(hwirq, REG_INTR_POLARITY, is_low);
+
+	return 0;
+}
+
+static int sp_intc_get_ext_irq(int ext_num)
+{
+	void __iomem *base = ext_num ? REG_MASKED_EXT1 : REG_MASKED_EXT0;
+	u32 shift = ext_num ? GROUP_SHIFT_EXT1 : GROUP_SHIFT_EXT0;
+	u32 groups;
+	u32 pending_group;
+	u32 group;
+	u32 pending_irq;
+
+	groups = readl_relaxed(REG_INTR_GROUP);
+	pending_group = (groups >> shift) & GROUP_MASK;
+	if (!pending_group)
+		return -1;
+
+	group = fls(pending_group) - 1;
+	pending_irq = readl_relaxed(base + group * 4);
+	if (!pending_irq)
+		return -1;
+
+	return (group * 32) + fls(pending_irq) - 1;
+}
+
+static void sp_intc_handle_ext_cascaded(struct irq_desc *desc)
+{
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+	int ext_num = (uintptr_t)irq_desc_get_handler_data(desc);
+	int hwirq;
+
+	chained_irq_enter(chip, desc);
+
+	while ((hwirq = sp_intc_get_ext_irq(ext_num)) >= 0) {
+		if (unlikely(IS_GPIO_INT(hwirq) && TEST_STATE(hwirq, _IS_ACTIVE))) { // WORKAROUND
+			ASSIGN_STATE(hwirq, _IS_ACTIVE, false);
+			sp_intc_assign_bit(hwirq, REG_INTR_POLARITY, TEST_STATE(hwirq, _IS_LOW));
+		} else {
+			generic_handle_domain_irq(sp_intc.domain, hwirq);
+		}
+	}
+
+	chained_irq_exit(chip, desc);
+}
+
+static struct irq_chip sp_intc_chip = {
+	.name = "sp_intc",
+	.irq_ack = sp_intc_ack_irq,
+	.irq_mask = sp_intc_mask_irq,
+	.irq_unmask = sp_intc_unmask_irq,
+	.irq_set_type = sp_intc_set_type,
+};
+
+static int sp_intc_irq_domain_map(struct irq_domain *domain,
+				  unsigned int irq, irq_hw_number_t hwirq)
+{
+	irq_set_chip_and_handler(irq, &sp_intc_chip, handle_level_irq);
+	irq_set_chip_data(irq, &sp_intc_chip);
+	irq_set_noprobe(irq);
+
+	return 0;
+}
+
+static const struct irq_domain_ops sp_intc_dm_ops = {
+	.xlate = irq_domain_xlate_twocell,
+	.map = sp_intc_irq_domain_map,
+};
+
+static int sp_intc_irq_map(struct device_node *node, int i)
+{
+	unsigned int irq;
+
+	irq = irq_of_parse_and_map(node, i);
+	if (!irq)
+		return -ENOENT;
+
+	irq_set_chained_handler_and_data(irq, sp_intc_handle_ext_cascaded, (void *)(uintptr_t)i);
+
+	return 0;
+}
+
+static int __init sp_intc_init_dt(struct device_node *node, struct device_node *parent)
+{
+	int i, ret;
+
+	sp_intc.g0 = of_iomap(node, 0);
+	if (!sp_intc.g0)
+		return -ENXIO;
+
+	sp_intc.g1 = of_iomap(node, 1);
+	if (!sp_intc.g1) {
+		ret = -ENXIO;
+		goto out_unmap0;
+	}
+
+	ret = sp_intc_irq_map(node, 0); // EXT_INT0
+	if (ret)
+		goto out_unmap1;
+
+	ret = sp_intc_irq_map(node, 1); // EXT_INT1
+	if (ret)
+		goto out_unmap1;
+
+	/* initial regs */
+	for (i = 0; i < SP_INTC_NR_GROUPS; i++) {
+		/* all mask */
+		writel_relaxed(0, REG_INTR_MASK + i * 4);
+		/* all edge */
+		writel_relaxed(~0, REG_INTR_TYPE + i * 4);
+		/* all high-active */
+		writel_relaxed(0, REG_INTR_POLARITY + i * 4);
+		/* all EXT_INT0 */
+		writel_relaxed(~0, REG_INTR_PRIORITY + i * 4);
+		/* all clear */
+		writel_relaxed(~0, REG_INTR_CLEAR + i * 4);
+	}
+
+	sp_intc.domain = irq_domain_add_linear(node, SP_INTC_NR_IRQS,
+					       &sp_intc_dm_ops, &sp_intc);
+	if (!sp_intc.domain) {
+		ret = -ENOMEM;
+		goto out_unmap1;
+	}
+
+	raw_spin_lock_init(&sp_intc.lock);
+
+	return 0;
+
+out_unmap1:
+	iounmap(sp_intc.g1);
+out_unmap0:
+	iounmap(sp_intc.g0);
+
+	return ret;
+}
+
+IRQCHIP_DECLARE(sp_intc, "sunplus,sp7021-intc", sp_intc_init_dt);

drivers/reset/Kconfig

···
 	help
 	  This enables the reset controller driver for the StarFive JH7100 SoC.
 
+config RESET_SUNPLUS
+	bool "Sunplus SoCs Reset Driver" if COMPILE_TEST
+	default ARCH_SUNPLUS
+	help
+	  This enables the reset driver support for Sunplus SoCs.
+	  The reset lines that can be asserted and deasserted by toggling bits
+	  in a contiguous, exclusive register space. The register is HIWORD_MASKED,
+	  which means each register holds 16 reset lines.
+
 config RESET_SUNXI
 	bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI
 	default ARCH_SUNXI

drivers/reset/Makefile

···
 obj-$(CONFIG_RESET_SIMPLE) += reset-simple.o
 obj-$(CONFIG_RESET_SOCFPGA) += reset-socfpga.o
 obj-$(CONFIG_RESET_STARFIVE_JH7100) += reset-starfive-jh7100.o
+obj-$(CONFIG_RESET_SUNPLUS) += reset-sunplus.o
 obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o
 obj-$(CONFIG_RESET_TI_SCI) += reset-ti-sci.o
 obj-$(CONFIG_RESET_TI_SYSCON) += reset-ti-syscon.o

drivers/reset/reset-sunplus.c

···
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * SP7021 reset driver
+ *
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+#include <linux/reboot.h>
+
+/* HIWORD_MASK_REG BITS */
+#define BITS_PER_HWM_REG	16
+
+/* resets HW info: reg_index_shift */
+static const u32 sp_resets[] = {
+/* SP7021: mo_reset0 ~ mo_reset9 */
+	0x00,
+	0x02,
+	0x03,
+	0x04,
+	0x05,
+	0x06,
+	0x07,
+	0x08,
+	0x09,
+	0x0a,
+	0x0b,
+	0x0d,
+	0x0e,
+	0x0f,
+	0x10,
+	0x12,
+	0x14,
+	0x15,
+	0x16,
+	0x17,
+	0x18,
+	0x19,
+	0x1a,
+	0x1b,
+	0x1c,
+	0x1d,
+	0x1e,
+	0x1f,
+	0x20,
+	0x21,
+	0x22,
+	0x23,
+	0x24,
+	0x25,
+	0x26,
+	0x2a,
+	0x2b,
+	0x2d,
+	0x2e,
+	0x30,
+	0x31,
+	0x32,
+	0x33,
+	0x3d,
+	0x3e,
+	0x3f,
+	0x42,
+	0x44,
+	0x4b,
+	0x4c,
+	0x4d,
+	0x4e,
+	0x4f,
+	0x50,
+	0x55,
+	0x60,
+	0x61,
+	0x6a,
+	0x6f,
+	0x70,
+	0x73,
+	0x74,
+	0x86,
+	0x8a,
+	0x8b,
+	0x8d,
+	0x8e,
+	0x8f,
+	0x90,
+	0x92,
+	0x93,
+	0x94,
+	0x95,
+	0x96,
+	0x97,
+	0x98,
+	0x99,
+};
+
+struct sp_reset {
+	struct reset_controller_dev rcdev;
+	struct notifier_block notifier;
+	void __iomem *base;
+};
+
+static inline struct sp_reset *to_sp_reset(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct sp_reset, rcdev);
+}
+
+static int sp_reset_update(struct reset_controller_dev *rcdev,
+			   unsigned long id, bool assert)
+{
+	struct sp_reset *reset = to_sp_reset(rcdev);
+	int index = sp_resets[id] / BITS_PER_HWM_REG;
+	int shift = sp_resets[id] % BITS_PER_HWM_REG;
+	u32 val;
+
+	val = (1 << (16 + shift)) | (assert << shift);
+	writel(val, reset->base + (index * 4));
+
+	return 0;
+}
+
+static int sp_reset_assert(struct reset_controller_dev *rcdev,
+			   unsigned long id)
+{
+	return sp_reset_update(rcdev, id, true);
+}
+
+static int sp_reset_deassert(struct reset_controller_dev *rcdev,
+			     unsigned long id)
+{
+	return sp_reset_update(rcdev, id, false);
+}
+
+static int sp_reset_status(struct reset_controller_dev *rcdev,
+			   unsigned long id)
+{
+	struct sp_reset *reset = to_sp_reset(rcdev);
+	int index = sp_resets[id] / BITS_PER_HWM_REG;
+	int shift = sp_resets[id] % BITS_PER_HWM_REG;
+	u32 reg;
+
+	reg = readl(reset->base + (index * 4));
+
+	return !!(reg & BIT(shift));
+}
+
+static const struct reset_control_ops sp_reset_ops = {
+	.assert   = sp_reset_assert,
+	.deassert = sp_reset_deassert,
+	.status   = sp_reset_status,
+};
+
+static int sp_restart(struct notifier_block *nb, unsigned long mode,
+		      void *cmd)
+{
+	struct sp_reset *reset = container_of(nb, struct sp_reset, notifier);
+
+	sp_reset_assert(&reset->rcdev, 0);
+	sp_reset_deassert(&reset->rcdev, 0);
+
+	return NOTIFY_DONE;
+}
+
+static int sp_reset_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct sp_reset *reset;
+	struct resource *res;
+	int ret;
+
+	reset = devm_kzalloc(dev, sizeof(*reset), GFP_KERNEL);
+	if (!reset)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	reset->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(reset->base))
+		return PTR_ERR(reset->base);
+
+	reset->rcdev.ops = &sp_reset_ops;
+	reset->rcdev.owner = THIS_MODULE;
+	reset->rcdev.of_node = dev->of_node;
+	reset->rcdev.nr_resets = resource_size(res) / 4 * BITS_PER_HWM_REG;
+
+	ret = devm_reset_controller_register(dev, &reset->rcdev);
+	if (ret)
+		return ret;
+
+	reset->notifier.notifier_call = sp_restart;
+	reset->notifier.priority = 192;
+
+	return register_restart_handler(&reset->notifier);
+}
+
+static const struct of_device_id sp_reset_dt_ids[] = {
+	{.compatible = "sunplus,sp7021-reset",},
+	{ /* sentinel */ },
+};
+
+static struct platform_driver sp_reset_driver = {
+	.probe = sp_reset_probe,
+	.driver = {
+		.name			= "sunplus-reset",
+		.of_match_table		= sp_reset_dt_ids,
+		.suppress_bind_attrs	= true,
+	},
+};
+builtin_platform_driver(sp_reset_driver);

include/dt-bindings/clock/sunplus,sp7021-clkc.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+#ifndef _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
+#define _DT_BINDINGS_CLOCK_SUNPLUS_SP7021_H
+
+/* gates */
+#define CLK_RTC         0
+#define CLK_OTPRX       1
+#define CLK_NOC         2
+#define CLK_BR          3
+#define CLK_SPIFL       4
+#define CLK_PERI0       5
+#define CLK_PERI1       6
+#define CLK_STC0        7
+#define CLK_STC_AV0     8
+#define CLK_STC_AV1     9
+#define CLK_STC_AV2     10
+#define CLK_UA0         11
+#define CLK_UA1         12
+#define CLK_UA2         13
+#define CLK_UA3         14
+#define CLK_UA4         15
+#define CLK_HWUA        16
+#define CLK_DDC0        17
+#define CLK_UADMA       18
+#define CLK_CBDMA0      19
+#define CLK_CBDMA1      20
+#define CLK_SPI_COMBO_0 21
+#define CLK_SPI_COMBO_1 22
+#define CLK_SPI_COMBO_2 23
+#define CLK_SPI_COMBO_3 24
+#define CLK_AUD         25
+#define CLK_USBC0       26
+#define CLK_USBC1       27
+#define CLK_UPHY0       28
+#define CLK_UPHY1       29
+#define CLK_I2CM0       30
+#define CLK_I2CM1       31
+#define CLK_I2CM2       32
+#define CLK_I2CM3       33
+#define CLK_PMC         34
+#define CLK_CARD_CTL0   35
+#define CLK_CARD_CTL1   36
+#define CLK_CARD_CTL4   37
+#define CLK_BCH         38
+#define CLK_DDFCH       39
+#define CLK_CSIIW0      40
+#define CLK_CSIIW1      41
+#define CLK_MIPICSI0    42
+#define CLK_MIPICSI1    43
+#define CLK_HDMI_TX     44
+#define CLK_VPOST       45
+#define CLK_TGEN        46
+#define CLK_DMIX        47
+#define CLK_TCON        48
+#define CLK_GPIO        49
+#define CLK_MAILBOX     50
+#define CLK_SPIND       51
+#define CLK_I2C2CBUS    52
+#define CLK_SEC         53
+#define CLK_DVE         54
+#define CLK_GPOST0      55
+#define CLK_OSD0        56
+#define CLK_DISP_PWM    57
+#define CLK_UADBG       58
+#define CLK_FIO_CTL     59
+#define CLK_FPGA        60
+#define CLK_L2SW        61
+#define CLK_ICM         62
+#define CLK_AXI_GLOBAL  63
+
+/* plls */
+#define PLL_A           64
+#define PLL_E           65
+#define PLL_E_2P5       66
+#define PLL_E_25        67
+#define PLL_E_112P5     68
+#define PLL_F           69
+#define PLL_TV          70
+#define PLL_TV_A        71
+#define PLL_SYS         72
+
+#define CLK_MAX         73
+
+#endif

include/dt-bindings/reset/sunplus,sp7021-reset.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) Sunplus Technology Co., Ltd.
+ *       All rights reserved.
+ */
+#ifndef _DT_BINDINGS_RST_SUNPLUS_SP7021_H
+#define _DT_BINDINGS_RST_SUNPLUS_SP7021_H
+
+#define RST_SYSTEM              0
+#define RST_RTC                 1
+#define RST_IOCTL               2
+#define RST_IOP                 3
+#define RST_OTPRX               4
+#define RST_NOC                 5
+#define RST_BR                  6
+#define RST_RBUS_L00            7
+#define RST_SPIFL               8
+#define RST_SDCTRL0             9
+#define RST_PERI0               10
+#define RST_A926                11
+#define RST_UMCTL2              12
+#define RST_PERI1               13
+#define RST_DDR_PHY0            14
+#define RST_ACHIP               15
+#define RST_STC0                16
+#define RST_STC_AV0             17
+#define RST_STC_AV1             18
+#define RST_STC_AV2             19
+#define RST_UA0                 20
+#define RST_UA1                 21
+#define RST_UA2                 22
+#define RST_UA3                 23
+#define RST_UA4                 24
+#define RST_HWUA                25
+#define RST_DDC0                26
+#define RST_UADMA               27
+#define RST_CBDMA0              28
+#define RST_CBDMA1              29
+#define RST_SPI_COMBO_0         30
+#define RST_SPI_COMBO_1         31
+#define RST_SPI_COMBO_2         32
+#define RST_SPI_COMBO_3         33
+#define RST_AUD                 34
+#define RST_USBC0               35
+#define RST_USBC1               36
+#define RST_UPHY0               37
+#define RST_UPHY1               38
+#define RST_I2CM0               39
+#define RST_I2CM1               40
+#define RST_I2CM2               41
+#define RST_I2CM3               42
+#define RST_PMC                 43
+#define RST_CARD_CTL0           44
+#define RST_CARD_CTL1           45
+#define RST_CARD_CTL4           46
+#define RST_BCH                 47
+#define RST_DDFCH               48
+#define RST_CSIIW0              49
+#define RST_CSIIW1              50
+#define RST_MIPICSI0            51
+#define RST_MIPICSI1            52
+#define RST_HDMI_TX             53
+#define RST_VPOST               54
+#define RST_TGEN                55
+#define RST_DMIX                56
+#define RST_TCON                57
+#define RST_INTERRUPT           58
+#define RST_RGST                59
+#define RST_GPIO                60
+#define RST_RBUS_TOP            61
+#define RST_MAILBOX             62
+#define RST_SPIND               63
+#define RST_I2C2CBUS            64
+#define RST_SEC                 65
+#define RST_DVE                 66
+#define RST_GPOST0              67
+#define RST_OSD0                68
+#define RST_DISP_PWM            69
+#define RST_UADBG               70
+#define RST_DUMMY_MASTER        71
+#define RST_FIO_CTL             72
+#define RST_FPGA                73
+#define RST_L2SW                74
+#define RST_ICM                 75
+#define RST_AXI_GLOBAL          76
+
+#endif