ARM: dts: ixp4xx: Add devicetree for Iomega NAS 100D

This creates a more or less fully featured device tree for the
IXP42x-based Iomega NAS 100D.

We can't read out the raw flash contents for ethernet MAC, and
we cannot handle a power-off-button inside the kernel like the
boardfile does. These two things are normally done in userspace.

This conversion is part of moving all of the IXP4xx board files
over to device tree to modernize the IXP4xx kernel.

Cc: Rod Whitby <rod@whitby.id.au>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/Makefile

@@ -242,6 +242,7 @@ dtb-$(CONFIG_ARCH_INTEGRATOR) += \
 dtb-$(CONFIG_ARCH_IXP4XX) += \
 	intel-ixp42x-linksys-nslu2.dtb \
 	intel-ixp42x-welltech-epbx100.dtb \
+	intel-ixp42x-iomega-nas100d.dtb \
 	intel-ixp43x-gateworks-gw2358.dtb
 dtb-$(CONFIG_ARCH_KEYSTONE) += \
 	keystone-k2hk-evm.dtb \

arch/arm/boot/dts/intel-ixp42x-iomega-nas100d.dts

@@ -0,0 +1,146 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for Iomega NAS 100D
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Iomega NAS 100D";
+	compatible = "iom,nas-100d", "intel,ixp42x";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	memory@0 {
+		/* 64 MB SDRAM */
+		device_type = "memory";
+		reg = <0x00000000 0x4000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
+		stdout-path = "uart0:115200n8";
+	};
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		led-wlan {
+			label = "nas100d:red:wlan";
+			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+			/* We don't have WLAN trigger in the kernel (yet) */
+			linux,default-trigger = "netdev";
+		};
+		led-disk {
+			label = "nas100d:red:disk";
+			gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+			linux,default-trigger = "disk-activity";
+		};
+		led-power {
+			label = "nas100d:red:power";
+			gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		button-power {
+			wakeup-source;
+			linux,code = <KEY_POWER>;
+			label = "power";
+			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
+		};
+		button-reset {
+			wakeup-source;
+			linux,code = <KEY_ESC>;
+			label = "reset";
+			gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	i2c {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio0 5 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		rtc@51 {
+			compatible = "nxp,pcf8563";
+			reg = <0x51>;
+		};
+	};
+
+	gpio-poweroff {
+		compatible = "gpio-poweroff";
+		gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+		timeout-ms = <5000>;
+	};
+
+	soc {
+		bus@50000000 {
+			/* The first 16MB region at CS0 on the expansion bus */
+			flash@0 {
+				compatible = "intel,ixp4xx-flash", "cfi-flash";
+				bank-width = <2>;
+				/*
+				 * 8 MB of Flash in 0x20000 byte blocks
+				 * mapped in at CS0.
+				 */
+				reg = <0x00000000 0x800000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/* Eraseblock at 0x7e0000 */
+					fis-index-block = <0x3f>;
+				};
+			};
+		};
+
+		pci@c0000000 {
+			status = "ok";
+
+			/*
+			 * Taken from NAS 100D PCI boardfile (nas100d-pci.c)
+			 * We have slots (IDSEL) 1, 2 and 3 and pins 1, 2 and 3.
+			 */
+			interrupt-map =
+			/* IDSEL 1 */
+			<0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
+			/* IDSEL 2 */
+			<0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */
+			/* 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 7  IRQ_TYPE_LEVEL_LOW>; /* INT C on slot 3 is irq 7 */
+		};
+
+		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>;
+				};
+			};
+		};
+	};
+};