linuxdebug/arch/arm/boot/dts/imx6q-gk802.dts

// SPDX-License-Identifier: GPL-2.0-only
// Copyright (C) 2013 Philipp Zabel

/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include "imx6q.dtsi"

/ {
	model = "Zealz GK802";
	compatible = "zealz,imx6q-gk802", "fsl,imx6q";

	chosen {
		stdout-path = &uart4;
	};

	memory@10000000 {
		device_type = "memory";
		reg = <0x10000000 0x40000000>;
	};

	regulators {
		compatible = "simple-bus";
		#address-cells = <1>;
		#size-cells = <0>;

		reg_3p3v: regulator@0 {
			compatible = "regulator-fixed";
			reg = <0>;
			regulator-name = "3P3V";
			regulator-min-microvolt = <3300000>;
			regulator-max-microvolt = <3300000>;
			regulator-always-on;
		};
	};

	gpio-keys {
		compatible = "gpio-keys";

		recovery-button {
			label = "recovery";
			gpios = <&gpio3 16 1>;
			linux,code = <KEY_RESTART>;
			wakeup-source;
		};
	};
};

&hdmi {
	ddc-i2c-bus = <&i2c3>;
	status = "okay";
};

/* Internal I2C */
&i2c2 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_i2c2>;
	clock-frequency = <100000>;
	status = "okay";

	/* SDMC DM2016 1024 bit EEPROM + 128 bit OTP */
	eeprom: dm2016@51 {
		compatible = "sdmc,dm2016";
		reg = <0x51>;
	};
};

/* External I2C via HDMI */
&i2c3 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_i2c3>;
	clock-frequency = <100000>;
	status = "okay";
};

&iomuxc {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_hog>;

	imx6q-gk802 {
		pinctrl_hog: hoggrp {
			fsl,pins = <
				/* Recovery button, active-low */
				MX6QDL_PAD_EIM_D16__GPIO3_IO16  0x100b1
				/* RTL8192CU enable GPIO, active-low */
				MX6QDL_PAD_NANDF_D0__GPIO2_IO00 0x1b0b0
			>;
		};

		pinctrl_i2c2: i2c2grp {
			fsl,pins = <
				MX6QDL_PAD_KEY_COL3__I2C2_SCL		0x4001b8b1
				MX6QDL_PAD_KEY_ROW3__I2C2_SDA		0x4001b8b1
			>;
		};

		pinctrl_i2c3: i2c3grp {
			fsl,pins = <
				MX6QDL_PAD_GPIO_5__I2C3_SCL		0x4001b8b1
				MX6QDL_PAD_GPIO_16__I2C3_SDA		0x4001b8b1
			>;
		};

		pinctrl_uart4: uart4grp {
			fsl,pins = <
				MX6QDL_PAD_KEY_COL0__UART4_TX_DATA	0x1b0b1
				MX6QDL_PAD_KEY_ROW0__UART4_RX_DATA	0x1b0b1
			>;
		};

		pinctrl_usdhc3: usdhc3grp {
			fsl,pins = <
				MX6QDL_PAD_SD3_CMD__SD3_CMD		0x17059
				MX6QDL_PAD_SD3_CLK__SD3_CLK		0x10059
				MX6QDL_PAD_SD3_DAT0__SD3_DATA0		0x17059
				MX6QDL_PAD_SD3_DAT1__SD3_DATA1		0x17059
				MX6QDL_PAD_SD3_DAT2__SD3_DATA2		0x17059
				MX6QDL_PAD_SD3_DAT3__SD3_DATA3		0x17059
			>;
		};

		pinctrl_usdhc4: usdhc4grp {
			fsl,pins = <
				MX6QDL_PAD_SD4_CMD__SD4_CMD		0x17059
				MX6QDL_PAD_SD4_CLK__SD4_CLK		0x10059
				MX6QDL_PAD_SD4_DAT0__SD4_DATA0		0x17059
				MX6QDL_PAD_SD4_DAT1__SD4_DATA1		0x17059
				MX6QDL_PAD_SD4_DAT2__SD4_DATA2		0x17059
				MX6QDL_PAD_SD4_DAT3__SD4_DATA3		0x17059
			>;
		};
	};
};

&uart2 {
	status = "okay";
};

&uart4 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart4>;
	status = "okay";
};

/* External USB-A port (USBOTG) */
&usbotg {
	disable-over-current;
	status = "okay";
};

/* Internal USB port (USBH1), connected to RTL8192CU */
&usbh1 {
	disable-over-current;
	status = "okay";
};

/* External microSD */
&usdhc3 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_usdhc3>;
	bus-width = <4>;
	cd-gpios = <&gpio6 11 GPIO_ACTIVE_LOW>;
	vmmc-supply = <&reg_3p3v>;
	status = "okay";
};

/* Internal microSD */
&usdhc4 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_usdhc4>;
	bus-width = <4>;
	vmmc-supply = <&reg_3p3v>;
	status = "okay";
};