1 // SPDX-License-Identifier: ISC
2 /*
3 * Device Tree file for Linksys NSLU2
4 */
5
6 /dts-v1/;
7
8 #include "intel-ixp42x.dtsi"
9 #include <dt-bindings/input/input.h>
10
11 / {
12 model = "Linksys NSLU2 (Network Storage Link for USB 2.0 Disk Drives)";
13 compatible = "linksys,nslu2", "intel,ixp42x";
14 #address-cells = <1>;
15 #size-cells = <1>;
16
17 memory@0 {
18 /* 32 MB SDRAM */
19 device_type = "memory";
20 reg = <0x00000000 0x2000000>;
21 };
22
23 chosen {
24 bootargs = "console=ttyS0,115200n8 root=/dev/mtdblock2 rw rootfstype=squashfs,jffs2 rootwait";
25 stdout-path = "uart0:115200n8";
26 };
27
28 aliases {
29 serial0 = &uart0;
30 };
31
32 leds {
33 compatible = "gpio-leds";
34 led-status {
35 label = "nslu2:red:status";
36 gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
37 default-state = "on";
38 linux,default-trigger = "heartbeat";
39 };
40 led-ready {
41 label = "nslu2:green:ready";
42 gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
43 default-state = "on";
44 };
45 led-disk-1 {
46 label = "nslu2:green:disk-1";
47 gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
48 default-state = "off";
49 };
50 led-disk-2 {
51 label = "nslu2:green:disk-2";
52 gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
53 default-state = "off";
54 };
55 };
56
57 gpio_keys {
58 compatible = "gpio-keys";
59
60 button-power {
61 wakeup-source;
62 linux,code = <KEY_POWER>;
63 label = "power";
64 gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
65 };
66 button-reset {
67 wakeup-source;
68 linux,code = <KEY_RESTART>;
69 label = "reset";
70 gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
71 };
72 };
73
74 i2c {
75 compatible = "i2c-gpio";
76 sda-gpios = <&gpio0 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
77 scl-gpios = <&gpio0 6 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
78 #address-cells = <1>;
79 #size-cells = <0>;
80
81 rtc@6f {
82 compatible = "xicor,x1205";
83 reg = <0x6f>;
84 };
85 };
86
87 gpio-poweroff {
88 compatible = "gpio-poweroff";
89 gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
90 timeout-ms = <5000>;
91 };
92
93 gpio_pwm: pwm {
94 #pwm-cells = <3>;
95 compatible = "pwm-gpio";
96 gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
97 };
98
99 beeper {
100 compatible = "pwm-beeper";
101 pwms = <&gpio_pwm 0 1 0>;
102 beeper-hz = <1000>;
103 };
104
105 soc {
106 bus@c4000000 {
107 /* The first 16MB region at CS0 on the expansion bus */
108 flash@0,0 {
109 compatible = "intel,ixp4xx-flash", "cfi-flash";
110 bank-width = <2>;
111 /* Enable writes on the expansion bus */
112 intel,ixp4xx-eb-write-enable = <1>;
113 /*
114 * 8 MB of Flash in 0x20000 byte blocks
115 * mapped in at CS0.
116 */
117 reg = <0 0x00000000 0x800000>;
118
119 partitions {
120 compatible = "redboot-fis";
121 /* Eraseblock at 0x7e0000 */
122 fis-index-block = <0x3f>;
123 };
124 };
125 };
126
127 pci@c0000000 {
128 status = "okay";
129
130 /*
131 * Taken from NSLU2 PCI boardfile, INT A, B, C swizzled D constant
132 * We have slots (IDSEL) 1, 2 and 3.
133 */
134 #interrupt-cells = <1>;
135 interrupt-map-mask = <0xf800 0 0 7>;
136 interrupt-map =
137 /* IDSEL 1 */
138 <0x0800 0 0 1 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 1 is irq 11 */
139 <0x0800 0 0 2 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 1 is irq 10 */
140 <0x0800 0 0 3 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 1 is irq 9 */
141 <0x0800 0 0 4 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 1 is irq 8 */
142 /* IDSEL 2 */
143 <0x1000 0 0 1 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 2 is irq 10 */
144 <0x1000 0 0 2 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 2 is irq 9 */
145 <0x1000 0 0 3 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 2 is irq 11 */
146 <0x1000 0 0 4 &gpio0 8 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 2 is irq 8 */
147 /* IDSEL 3 */
148 <0x1800 0 0 1 &gpio0 9 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 3 is irq 9 */
149 <0x1800 0 0 2 &gpio0 11 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 3 is irq 11 */
150 <0x1800 0 0 3 &gpio0 10 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 3 is irq 10 */
151 <0x1800 0 0 4 &gpio0 8 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 3 is irq 8 */
152 };
153
154 ethernet@c8009000 {
155 status = "okay";
156 queue-rx = <&qmgr 3>;
157 queue-txready = <&qmgr 20>;
158 phy-mode = "rgmii";
159 phy-handle = <&phy1>;
160
161 mdio {
162 #address-cells = <1>;
163 #size-cells = <0>;
164
165 phy1: ethernet-phy@1 {
166 reg = <1>;
167 };
168 };
169 };
170 };
171 };
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