ARM: dts: ixp4xx: Add Intel IXDP425 etc reference designs

The IXDP425, IXCDP1100, KIXRP435 and IXDP465 are similar Intel reference
designs for IXP42x, IXP43x and IXP4[56]x.

This adds device trees for these so the board files can be migrated.

Cc: Deepak Saxena <[e-mail]>
Cc: Vladimir Barinov <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

arch/arm/boot/dts/Makefile

···
 dtb-$(CONFIG_ARCH_IXP4XX) += \
 	intel-ixp42x-linksys-nslu2.dtb \
 	intel-ixp42x-welltech-epbx100.dtb \
+	intel-ixp42x-ixdp425.dtb \
+	intel-ixp43x-kixrp435.dtb \
+	intel-ixp46x-ixdp465.dtb \
 	intel-ixp42x-iomega-nas100d.dtb \
 	intel-ixp42x-dlink-dsm-g600.dtb \
 	intel-ixp42x-gateworks-gw2348.dtb \

arch/arm/boot/dts/intel-ixp42x-ixdp425.dts

···
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the Intel IXDP425 also known as IXCDP1100 Control Plane
+ * processor reference design.
+ *
+ * This platform has the codename "Richfield".
+ *
+ * This machine is based on a 533 MHz IXP425.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x.dtsi"
+#include "intel-ixp4xx-reference-design.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Intel IXDP425/IXCDP1100 Richfield Reference Design";
+	compatible = "intel,ixdp425", "intel,ixp42x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	soc {
+		bus@c4000000 {
+			flash@0,0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/* Enable writes on the expansion bus */
+				intel,ixp4xx-eb-write-enable = <1>;
+				/* 16 MB of Flash mapped in at CS0 */
+				reg = <0 0x00000000 0x1000000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* Eraseblock at 0x0fe0000 */
+					fis-index-block = <0x7f>;
+				};
+			};
+		};
+
+		/* EthB */
+		ethernet@c8009000 {
+			status = "ok";
+			queue-rx = <&qmgr 3>;
+			queue-txready = <&qmgr 20>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy0>;
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				phy0: ethernet-phy@0 {
+					reg = <0>;
+				};
+
+				phy1: ethernet-phy@1 {
+					reg = <1>;
+				};
+			};
+		};
+
+		/* EthC */
+		ethernet@c800a000 {
+			status = "ok";
+			queue-rx = <&qmgr 4>;
+			queue-txready = <&qmgr 21>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy1>;
+		};
+	};
+};

arch/arm/boot/dts/intel-ixp43x-kixrp435.dts

···
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the Intel KIXRP435 Control Plane
+ * processor reference design.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp43x.dtsi"
+#include "intel-ixp4xx-reference-design.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Intel KIXRP435 Reference Design";
+	compatible = "intel,kixrp435", "intel,ixp43x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	soc {
+		bus@c4000000 {
+			flash@0,0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/* Enable writes on the expansion bus */
+				intel,ixp4xx-eb-write-enable = <1>;
+				/* 16 MB of Flash mapped in at CS0 */
+				reg = <0 0x00000000 0x1000000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* Eraseblock at 0x0fe0000 */
+					fis-index-block = <0x7f>;
+				};
+			};
+		};
+
+		/* CHECKME: ethernet set-up taken from Gateworks Cambria */
+		ethernet@c800a000 {
+			status = "ok";
+			queue-rx = <&qmgr 4>;
+			queue-txready = <&qmgr 21>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy1>;
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				phy1: ethernet-phy@1 {
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					reg = <2>;
+				};
+			};
+		};
+
+		ethernet@c800c000 {
+			status = "ok";
+			queue-rx = <&qmgr 2>;
+			queue-txready = <&qmgr 19>;
+			phy-mode = "rgmii";
+			phy-handle = <&phy2>;
+			intel,npe-handle = <&npe 0>;
+		};
+	};
+};

arch/arm/boot/dts/intel-ixp46x-ixdp465.dts

···
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for the Intel IXDP465 Control Plane processor reference
+ * design, codename "BMP".
+ */
+
+/dts-v1/;
+
+#include "intel-ixp45x-ixp46x.dtsi"
+#include "intel-ixp4xx-reference-design.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Intel IXDP465 BMP Reference Design";
+	compatible = "intel,ixdp465", "intel,ixp46x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	soc {
+		bus@c4000000 {
+			flash@0,0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/* Enable writes on the expansion bus */
+				intel,ixp4xx-eb-write-enable = <1>;
+				/* 32 MB of Flash mapped in at CS0 and CS1 */
+				reg = <0 0x00000000 0x2000000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* Eraseblock at 0x1fe0000 */
+					fis-index-block = <0xff>;
+				};
+			};
+		};
+		/* TODO: configure ethernet etc */
+	};
+};

arch/arm/boot/dts/intel-ixp4xx-reference-design.dtsi

···
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree include file for Intel reference designs for the
+ * XScale Network Processors in the IXP 4xx series. Common device
+ * set-up for IXDP425, IXCDP1100, KIXRP435 and IXDP465.
+ */
+
+/ {
+	memory@0 {
+		/*
+		 * The board supports up to 256 MB of memory. Here we put in
+		 * 64 MB and this may be modified by the boot loader.
+		 */
+		device_type = "memory";
+		reg = <0x00000000 0x4000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+		stdout-path = "uart0:115200n8";
+	};
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	i2c {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio0 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		eeprom@50 {
+			/*
+			 * Philips PCF8582C-2T/03 512byte I2C EEPROM
+			 * should behave like an Atmel 24c04.
+			 */
+			compatible = "atmel,24c04";
+			reg = <0x50>;
+			pagesize = <16>;
+			size = <512>;
+			read-only;
+		};
+	};
+
+	soc {
+		bus@c4000000 {
+			/* Flash memory defined per-variant */
+			nand-controller@3,0 {
+				/* Some designs have a NAND on CS3 enable it here if present */
+				status = "disabled";
+
+				/*
+				 * gen_nand needs to be extended and documented to get
+				 * command byte = 1 and address byte = 2 from the device
+				 * tree.
+				 */
+				compatible = "gen_nand";
+
+				/* Expansion bus set-up */
+				intel,ixp4xx-eb-t1 = <0>;
+				intel,ixp4xx-eb-t2 = <0>;
+				intel,ixp4xx-eb-t3 = <1>; // 1 cycle extra strobe phase
+				intel,ixp4xx-eb-t4 = <0>;
+				intel,ixp4xx-eb-t5 = <0>;
+				intel,ixp4xx-eb-cycle-type = <0>; // Intel cycle type
+				intel,ixp4xx-eb-byte-access-on-halfword = <0>;
+				intel,ixp4xx-eb-mux-address-and-data = <0>;
+				intel,ixp4xx-eb-ahb-split-transfers = <0>;
+				intel,ixp4xx-eb-write-enable = <1>;
+				intel,ixp4xx-eb-byte-access = <1>;
+
+				/* 512 bytes memory window */
+				reg = <3 0x00000000 0x200>;
+				nand-on-flash-bbt;
+				nand-ecc-mode = "soft_bch";
+				nand-ecc-step-size = <512>;
+				nand-ecc-strength = <4>;
+				nce-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; /* NCE */
+
+				label = "ixp400 NAND";
+
+				partitions {
+					compatible = "fixed-partitions";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					fs@0 {
+						label = "ixp400 NAND FS 0";
+						reg = <0x0 0x800000>;
+					};
+					fs@800000 {
+						label = "ixp400 NAND FS 1";
+						reg = <0x800000 0x0>;
+					};
+				};
+			};
+		};
+
+		pci@c0000000 {
+			status = "ok";
+
+			/*
+			 * Taken from IXDP425 PCI boardfile.
+			 * PCI slots on the BIXMB425BD base card.
+			 * We have up to 4 slots (IDSEL) with 4 swizzled IRQs.
+			 */
+			interrupt-map =
+			/* IDSEL 1 */
+			<0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
+			<0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 10 */
+			<0x0800 0 0 3 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 9 */
+			<0x0800 0 0 4 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 8 */
+			/* IDSEL 2 */
+			<0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */
+			<0x1000 0 0 2 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 9 */
+			<0x1000 0 0 3 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 8 */
+			<0x1000 0 0 4 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 2 is irq 11 */
+			/* IDSEL 3 */
+			<0x1800 0 0 1 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 3 is irq 9 */
+			<0x1800 0 0 2 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 8 */
+			<0x1800 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 11 */
+			<0x1800 0 0 4 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 3 is irq 10 */
+			/* IDSEL 4 */
+			<0x2000 0 0 1 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 4 is irq 8 */
+			<0x2000 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 4 is irq 11 */
+			<0x2000 0 0 3 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 4 is irq 10 */
+			<0x2000 0 0 4 &gpio0 9  IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 4 is irq 9 */
+		};
+	};
+};