1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Device Tree for the ST-Ericsson Nomadik S8815 board
4 * Produced by Calao Systems
5 */
6
7 /dts-v1/;
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include "ste-nomadik-stn8815.dtsi"
10
11 / {
12 model = "Calao Systems USB-S8815";
13 compatible = "calaosystems,usb-s8815";
14
15 chosen {
16 bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk";
17 };
18
19 aliases {
20 serial0 = &uart0;
21 serial1 = &uart1;
22 };
23
24 gpio3: gpio@101e7000 {
25 /* This hog will bias the MMC/SD card detect line */
26 mmcsd-gpio {
27 gpio-hog;
28 gpios = <16 0x0>;
29 output-low;
30 line-name = "card detect bias";
31 };
32 };
33
34 src@101e0000 {
35 /* These chrystal drivers are not used on this board */
36 disable-sxtalo;
37 disable-mxtalo;
38 };
39
40 pinctrl {
41 /* Hog CD pins */
42 pinctrl-names = "default";
43 pinctrl-0 = <&cd_default_mode>;
44
45 uart0 {
46 /* Only use RX/TX pins */
47 uart0_s8815_mode: uart0_mux {
48 u0_default_mux {
49 function = "u0";
50 groups = "u0txrx_a_1";
51 };
52 };
53 };
54 mmcsd-cd {
55 cd_default_mode: cd_default {
56 cd_default_cfg1 {
57 /* CD input GPIO */
58 pins = "GPIO111_H21";
59 ste,input = <0>;
60 };
61 cd_default_cfg2 {
62 /* CD GPIO biasing */
63 pins = "GPIO112_J21";
64 ste,output = <0>;
65 };
66 };
67 };
68 gpioi2c {
69 gpioi2c_default_mode: gpioi2c_default {
70 gpioi2c_default_cfg {
71 pins = "GPIO73_C21", "GPIO74_C20";
72 ste,input = <0>;
73 };
74 };
75 };
76 user-led {
77 user_led_default_mode: user_led_default {
78 user_led_default_cfg {
79 pins = "GPIO2_C5";
80 ste,output = <1>;
81 };
82 };
83 };
84 user-button {
85 user_button_default_mode: user_button_default {
86 user_button_default_cfg {
87 pins = "GPIO3_A4";
88 ste,input = <0>;
89 };
90 };
91 };
92 };
93
94 /* Ethernet */
95 external-bus@34000000 {
96 compatible = "simple-bus";
97 reg = <0x34000000 0x1000000>;
98 #address-cells = <1>;
99 #size-cells = <1>;
100 ranges = <0 0x34000000 0x1000000>;
101 ethernet@300 {
102 compatible = "smsc,lan91c111";
103 reg = <0x300 0x0fd00>;
104 interrupt-parent = <&gpio3>;
105 interrupts = <8 IRQ_TYPE_EDGE_RISING>;
106 };
107 };
108
109 i2c1 {
110 lis3lv02dl@1d {
111 /* Accelerometer */
112 compatible = "st,lis3lv02dl-accel";
113 reg = <0x1d>;
114 };
115 };
116
117 /* GPIO I2C connected to the USB portions of the STw4811 only */
118 gpio-i2c {
119 compatible = "i2c-gpio";
120 gpios = <&gpio2 10 0>, /* sda */
121 <&gpio2 9 0>; /* scl */
122 #address-cells = <1>;
123 #size-cells = <0>;
124 pinctrl-names = "default";
125 pinctrl-0 = <&gpioi2c_default_mode>;
126
127 stw4811@2d {
128 compatible = "st,stw4811-usb";
129 reg = <0x2d>;
130 };
131 };
132
133
134 amba {
135 /* Activate RXTX on UART 0 */
136 uart0: serial@101fd000 {
137 pinctrl-names = "default";
138 pinctrl-0 = <&uart0_s8815_mode>;
139 status = "okay";
140 };
141 /* Configure card detect for the uSD slot */
142 mmc@101f6000 {
143 cd-gpios = <&gpio3 15 GPIO_ACTIVE_LOW>;
144 };
145 };
146
147 /* The user LED on the board is set up to be used for heartbeat */
148 leds {
149 compatible = "gpio-leds";
150 user-led {
151 label = "user_led";
152 gpios = <&gpio0 2 0x1>;
153 default-state = "off";
154 linux,default-trigger = "heartbeat";
155 pinctrl-names = "default";
156 pinctrl-0 = <&user_led_default_mode>;
157 };
158 };
159
160 /* User key mapped in as "escape" */
161 gpio-keys {
162 compatible = "gpio-keys";
163 user-button {
164 label = "user_button";
165 gpios = <&gpio0 3 0x1>;
166 linux,code = <1>; /* KEY_ESC */
167 wakeup-source;
168 pinctrl-names = "default";
169 pinctrl-0 = <&user_button_default_mode>;
170 };
171 };
172 };
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