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