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 = "hci0-power";
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};
201