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 };
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