1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * WinLink E850-96 board device tree source
4 *
5 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
6 * Copyright (C) 2021 Linaro Ltd.
7 *
8 * Device tree source file for WinLink's E850-96 board which is based on
9 * Samsung Exynos850 SoC.
10 */
11
12 /dts-v1/;
13
14 #include "exynos850.dtsi"
15 #include <dt-bindings/gpio/gpio.h>
16 #include <dt-bindings/input/input.h>
17 #include <dt-bindings/leds/common.h>
18
19 / {
20 model = "WinLink E850-96 board";
21 compatible = "winlink,e850-96", "samsung,exynos850";
22
23 aliases {
24 mmc0 = &mmc_0;
25 serial0 = &serial_0;
26 };
27
28 chosen {
29 stdout-path = &serial_0;
30 };
31
32 /*
33 * RAM: 4 GiB (eMCP):
34 * - 2 GiB at 0x80000000
35 * - 2 GiB at 0x880000000
36 *
37 * 0xbab00000..0xbfffffff: secure memory (85 MiB).
38 */
39 memory@80000000 {
40 device_type = "memory";
41 reg = <0x0 0x80000000 0x3ab00000>,
42 <0x0 0xc0000000 0x40000000>,
43 <0x8 0x80000000 0x80000000>;
44 };
45
46 gpio-keys {
47 compatible = "gpio-keys";
48 pinctrl-names = "default";
49 pinctrl-0 = <&key_voldown_pins &key_volup_pins>;
50
51 volume-down-key {
52 label = "Volume Down";
53 linux,code = <KEY_VOLUMEDOWN>;
54 gpios = <&gpa1 0 GPIO_ACTIVE_LOW>;
55 };
56
57 volume-up-key {
58 label = "Volume Up";
59 linux,code = <KEY_VOLUMEUP>;
60 gpios = <&gpa0 7 GPIO_ACTIVE_LOW>;
61 };
62 };
63
64 leds {
65 compatible = "gpio-leds";
66
67 /* HEART_BEAT_LED */
68 user_led1: led-1 {
69 label = "yellow:user1";
70 gpios = <&gpg2 2 GPIO_ACTIVE_HIGH>;
71 color = <LED_COLOR_ID_YELLOW>;
72 function = LED_FUNCTION_HEARTBEAT;
73 linux,default-trigger = "heartbeat";
74 };
75
76 /* eMMC_LED */
77 user_led2: led-2 {
78 label = "yellow:user2";
79 gpios = <&gpg2 3 GPIO_ACTIVE_HIGH>;
80 color = <LED_COLOR_ID_YELLOW>;
81 linux,default-trigger = "mmc0";
82 };
83
84 /* SD_LED */
85 user_led3: led-3 {
86 label = "white:user3";
87 gpios = <&gpg2 4 GPIO_ACTIVE_HIGH>;
88 color = <LED_COLOR_ID_WHITE>;
89 function = LED_FUNCTION_SD;
90 linux,default-trigger = "mmc2";
91 };
92
93 /* WIFI_LED */
94 wlan_active_led: led-4 {
95 label = "yellow:wlan";
96 gpios = <&gpg2 6 GPIO_ACTIVE_HIGH>;
97 color = <LED_COLOR_ID_YELLOW>;
98 function = LED_FUNCTION_WLAN;
99 linux,default-trigger = "phy0tx";
100 default-state = "off";
101 };
102
103 /* BLUETOOTH_LED */
104 bt_active_led: led-5 {
105 label = "blue:bt";
106 gpios = <&gpg2 7 GPIO_ACTIVE_HIGH>;
107 color = <LED_COLOR_ID_BLUE>;
108 function = LED_FUNCTION_BLUETOOTH;
109 linux,default-trigger = "hci0rx";
110 default-state = "off";
111 };
112 };
113
114 /*
115 * RTC clock (XrtcXTI); external, must be 32.768 kHz.
116 *
117 * TODO: Remove this once RTC clock is implemented properly as part of
118 * PMIC driver.
119 */
120 rtcclk: clock-rtcclk {
121 compatible = "fixed-clock";
122 clock-output-names = "rtcclk";
123 #clock-cells = <0>;
124 clock-frequency = <32768>;
125 };
126 };
127
128 &cmu_hsi {
129 clocks = <&oscclk>, <&rtcclk>,
130 <&cmu_top CLK_DOUT_HSI_BUS>,
131 <&cmu_top CLK_DOUT_HSI_MMC_CARD>,
132 <&cmu_top CLK_DOUT_HSI_USB20DRD>;
133 clock-names = "oscclk", "rtcclk", "dout_hsi_bus",
134 "dout_hsi_mmc_card", "dout_hsi_usb20drd";
135 };
136
137 &mmc_0 {
138 status = "okay";
139 mmc-hs200-1_8v;
140 mmc-hs400-1_8v;
141 cap-mmc-highspeed;
142 non-removable;
143 mmc-hs400-enhanced-strobe;
144 card-detect-delay = <200>;
145 clock-frequency = <800000000>;
146 bus-width = <8>;
147 samsung,dw-mshc-ciu-div = <3>;
148 samsung,dw-mshc-sdr-timing = <0 4>;
149 samsung,dw-mshc-ddr-timing = <2 4>;
150 samsung,dw-mshc-hs400-timing = <0 2>;
151
152 pinctrl-names = "default";
153 pinctrl-0 = <&sd0_clk_pins &sd0_cmd_pins &sd0_rdqs_pins &sd0_nreset_pins
154 &sd0_bus1_pins &sd0_bus4_pins &sd0_bus8_pins>;
155 };
156
157 &oscclk {
158 clock-frequency = <26000000>;
159 };
160
161 &pinctrl_alive {
162 key_voldown_pins: key-voldown-pins {
163 samsung,pins = "gpa1-0";
164 samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
165 samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
166 samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
167 };
168
169 key_volup_pins: key-volup-pins {
170 samsung,pins = "gpa0-7";
171 samsung,pin-function = <EXYNOS_PIN_FUNC_EINT>;
172 samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
173 samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
174 };
175 };
176
177 &rtc {
178 status = "okay";
179 clocks = <&cmu_apm CLK_GOUT_RTC_PCLK>, <&rtcclk>;
180 clock-names = "rtc", "rtc_src";
181 };
182
183 &serial_0 {
184 status = "okay";
185 pinctrl-names = "default";
186 pinctrl-0 = <&uart1_pins>;
187 };
188
189 &usi_uart {
190 samsung,clkreq-on; /* needed for UART mode */
191 status = "okay";
192 };
193
194 &watchdog_cl0 {
195 status = "okay";
196 };
197
198 &watchdog_cl1 {
199 status = "okay";
200 };
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