1// SPDX-License-Identifier: ISC
  2/*
  3 * Device Tree file for D-Link DSM-G600 revision A based on IXP420
  4 * NOTE: revision B of this device uses PowerPC and is NOT supported by
  5 * this device tree.
  6 *
  7 * Inspired by the boardfile by Rod Whitby, Tower Technologies, Alessandro Zummo
  8 * and Michael Westerhof.
  9 */
 10
 11/dts-v1/;
 12
 13#include "intel-ixp42x.dtsi"
 14#include <dt-bindings/input/input.h>
 15
 16/ {
 17	model = "D-Link DSM-G600 rev A";
 18	compatible = "dlink,dsm-g600-a", "intel,ixp42x";
 19	#address-cells = <1>;
 20	#size-cells = <1>;
 21
 22	memory@0 {
 23		/* 64 MB SDRAM */
 24		device_type = "memory";
 25		reg = <0x00000000 0x4000000>;
 26	};
 27
 28	chosen {
 29		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
 30		stdout-path = "uart0:115200n8";
 31	};
 32
 33	aliases {
 34		serial0 = &uart0;
 35	};
 36
 37	leds {
 38		compatible = "gpio-leds";
 39		led-power {
 40			label = "dsmg600:green:power";
 41			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
 42			default-state = "on";
 43			linux,default-trigger = "heartbeat";
 44		};
 45		led-wlan {
 46			label = "dsmg600:green:wlan";
 47			/* CHECKME: flagged as active low in the old board file */
 48			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
 49			default-state = "on";
 50			/* We don't have WLAN trigger in the kernel (yet) */
 51			linux,default-trigger = "netdev";
 52		};
 53	};
 54
 55	gpio_keys {
 56		compatible = "gpio-keys";
 57
 58		button-reset {
 59			wakeup-source;
 60			linux,code = <KEY_RESTART>;
 61			label = "reset";
 62			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
 63		};
 64	};
 65
 66	gpio_keys_polled {
 67		compatible = "gpio-keys-polled";
 68
 69		/*
 70		 * According to the board file this key cannot handle interrupts and
 71		 * need to be polled. Investigate if this is really the case or if
 72		 * this can be moved adjacent to the ordinary gpio-keys above.
 73		 */
 74		button-power {
 75			wakeup-source;
 76			linux,code = <KEY_POWER>;
 77			label = "power";
 78			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
 79		};
 80	};
 81
 82	i2c {
 83		compatible = "i2c-gpio";
 84		sda-gpios = <&gpio0 5 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 85		scl-gpios = <&gpio0 4 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 86		#address-cells = <1>;
 87		#size-cells = <0>;
 88
 89		rtc@51 {
 90			compatible = "nxp,pcf8563";
 91			reg = <0x51>;
 92		};
 93	};
 94
 95	gpio-poweroff {
 96		compatible = "gpio-poweroff";
 97		gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
 98		timeout-ms = <5000>;
 99	};
100
101	soc {
102		bus@c4000000 {
103			/* The first 16MB region at CS0 on the expansion bus */
104			flash@0,0 {
105				compatible = "intel,ixp4xx-flash", "cfi-flash";
106				bank-width = <2>;
107				/*
108				 * 16 MB of Flash in 128 0x20000 sized blocks
109				 * mapped in at CS0.
110				 */
111				reg = <0 0x00000000 0x1000000>;
112
113				partitions {
114					compatible = "redboot-fis";
115					/*
116					 * A boot log says the directory is at 0xfe0000
117					 * 0x7f * 0x20000 = 0xfe0000
118					 */
119					fis-index-block = <0x7f>;
120				};
121			};
122		};
123
124		pci@c0000000 {
125			status = "okay";
126
127			/*
128			 * Taken from DSM-G600 PCI boardfile (dsmg600-pci.c)
129			 * We have slots (IDSEL) 1, 2, 3, 4 and pins 1, 2 and 3.
130			 * Only slot 3 have three IRQs.
131			 */
132			#interrupt-cells = <1>;
133			interrupt-map-mask = <0xf800 0 0 7>;
134			interrupt-map =
135			/* IDSEL 1 */
136			<0x0800 0 0 1 &gpio0 7  IRQ_TYPE_LEVEL_LOW>, /* INT E on slot 1 is irq 7 */
137			/* IDSEL 2 */
138			<0x1000 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 11 */
139			/* IDSEL 3 */
140			<0x1800 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 10 */
141			<0x1800 0 0 2 &gpio0 9  IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 9 */
142			<0x1800 0 0 3 &gpio0 8  IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 3 is irq 8 */
143			/* IDSEL 4 */
144			<0x2000 0 0 3 &gpio0 6  IRQ_TYPE_LEVEL_LOW>; /* INT F on slot 4 is irq 6 */
145		};
146	};
147};