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