[PATCH] ARM: dts: ixp4xx: Add devicetree for D-Link DSM-G600 rev A

[PATCH] ARM: dts: ixp4xx: Add devicetree for D-Link DSM-G600 rev A

[Linus Walleij]

This adds a devicetree for the D-Link DSM-G600 Wireless Network
Storage Enclosure so that we can delete the boardfile. The boardfile
does not even define an ethernet interface as it has an external
ethernet on PCI. This devicetree is for revision A using IXP420
the rev B version uses PowerPC.

Cc: Michael-Luke Jones <mlj28@cam.ac.uk>
Cc: Rod Whitby <rod@whitby.id.au>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Michael Westerhof <mwester@dls.net>
Cc: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 arch/arm/boot/dts/Makefile                    |   1 +
 .../boot/dts/intel-ixp42x-dlink-dsm-g600.dts  | 145 ++++++++++++++++++
 2 files changed, 146 insertions(+)
 create mode 100644 arch/arm/boot/dts/intel-ixp42x-dlink-dsm-g600.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index a2f3d14887b8..a8bd0ac4f8ae 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -243,6 +243,7 @@ dtb-$(CONFIG_ARCH_IXP4XX) += \
 	intel-ixp42x-linksys-nslu2.dtb \
 	intel-ixp42x-welltech-epbx100.dtb \
 	intel-ixp42x-iomega-nas100d.dtb \
+	intel-ixp42x-dlink-dsm-g600.dtb \
 	intel-ixp43x-gateworks-gw2358.dtb
 dtb-$(CONFIG_ARCH_KEYSTONE) += \
 	keystone-k2hk-evm.dtb \
diff --git a/arch/arm/boot/dts/intel-ixp42x-dlink-dsm-g600.dts b/arch/arm/boot/dts/intel-ixp42x-dlink-dsm-g600.dts
new file mode 100644
index 000000000000..fcc5ffd49227
--- /dev/null
+++ b/arch/arm/boot/dts/intel-ixp42x-dlink-dsm-g600.dts
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Device Tree file for D-Link DSM-G600 revision A based on IXP420
+ * NOTE: revision B of this device uses PowerPC and is NOT supported by
+ * this device tree.
+ *
+ * Inspired by the boardfile by Rod Whitby, Tower Technologies, Alessandro Zummo
+ * and Michael Westerhof.
+ */
+
+/dts-v1/;
+
+#include "intel-ixp42x.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "D-Link DSM-G600 rev A";
+	compatible = "dlink,dsm-g600-a", "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-power {
+			label = "dsmg600:green:power";
+			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+			linux,default-trigger = "heartbeat";
+		};
+		led-wlan {
+			label = "dsmg600:green:wlan";
+			/* CHECKME: flagged as active low in the old board file */
+			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+			/* We don't have WLAN trigger in the kernel (yet) */
+			linux,default-trigger = "netdev";
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		button-reset {
+			wakeup-source;
+			linux,code = <KEY_ESC>;
+			label = "reset";
+			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio_keys_polled {
+		compatible = "gpio-keys-polled";
+
+		/*
+		 * According to the board file this key cannot handle interrupts and
+		 * need to be polled. Investigate if this is really the case or if
+		 * this can be moved adjacent to the ordinary gpio-keys above.
+		 */
+		button-power {
+			wakeup-source;
+			linux,code = <KEY_POWER>;
+			label = "power";
+			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	i2c {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio0 5 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio0 4 (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 2 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>;
+				/*
+				 * 16 MB of Flash in 128 0x20000 sized blocks
+				 * mapped in at CS0.
+				 */
+				reg = <0x00000000 0x1000000>;
+
+				partitions {
+					compatible = "redboot-fis";
+					/*
+					 * A boot log says the directory is at 0xfe0000
+					 * 0x7f * 0x20000 = 0xfe0000
+					 */
+					fis-index-block = <0x7f>;
+				};
+			};
+		};
+
+		pci@c0000000 {
+			status = "ok";
+
+			/*
+			 * Taken from DSM-G600 PCI boardfile (dsmg600-pci.c)
+			 * We have slots (IDSEL) 1, 2, 3, 4 and pins 1, 2 and 3.
+			 * Only slot 3 have three IRQs.
+			 */
+			interrupt-map =
+			/* IDSEL 1 */
+			<0x0800 0 0 1 &gpio0 7  3>, /* INT E on slot 1 is irq 7 */
+			/* IDSEL 2 */
+			<0x1000 0 0 1 &gpio0 11 3>, /* INT A on slot 2 is irq 11 */
+			/* IDSEL 3 */
+			<0x1800 0 0 1 &gpio0 10 3>, /* INT B on slot 3 is irq 10 */
+			<0x1800 0 0 2 &gpio0 9  3>, /* INT C on slot 3 is irq 9 */
+			<0x1800 0 0 3 &gpio0 8  3>, /* INT D on slot 3 is irq 8 */
+			/* IDSEL 4 */
+			<0x2000 0 0 3 &gpio0 6  3>; /* INT F on slot 4 is irq 6 */
+		};
+	};
+};
-- 
2.31.1


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