Kobo Aura DT

imx50-kobo-aura.dts

// SPDX-License-Identifier: GPL-2.0+
// Copyright 2019 Jonathan Neuschäfer
//
// The Kobo Aura e-book reader, model N514. The mainboard is marked as E606F0B.

/dts-v1/;
#include "imx50.dtsi"
#include <dt-bindings/input/input.h>

/ {
	model = "Kobo Aura (N514)";
	compatible = "kobo,aura", "fsl,imx50";

	chosen {
		stdout-path = "serial1:115200n8";
	};

	memory@70000000 {
		device_type = "memory";
		reg = <0x70000000 0x10000000>;
	};

	gpio-leds {
		compatible = "gpio-leds";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_leds>;

		on {
			label = "kobo_aura:orange:on";
			gpios = <&gpio6 24 GPIO_ACTIVE_LOW>;
			linux,default-trigger = "heartbeat";	/* TODO: remove */
			panic-indicator;			/* TODO: test */
		};
	};

	gpio-keys {
		compatible = "gpio-keys";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_gpiokeys>;

		power {
			label = "Power Button";
			gpios = <&gpio4 10 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_POWER>;
		};

		hallsensor {
			label = "Hallsensor";
			gpios = <&gpio5 15 GPIO_ACTIVE_LOW>;
			linux,code = <0>;
			linux,input-type = <5>;
		};

		frontlight {
			label = "Frontlight";
			gpios = <&gpio4 1 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_DISPLAYTOGGLE>;
		};
	};

	vmmc: gpio-regulator {
		compatible = "regulator-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_vmmc>;

		regulator-name = "vmmc";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		enable-gpio = <&gpio4 13 GPIO_ACTIVE_HIGH>;
		startup-delay-us = <100000>;
	};

	spi {
		compatible = "spi-gpio";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_sd1_gpio>;
		status = "disabled";

		#address-cells = <1>;
		#size-cells = <0>;
		sck-gpios  = <&gpio5 0 GPIO_ACTIVE_HIGH>;	/* SD1_CLK */
		miso-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;	/* SD1_D0 */
		mosi-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;	/* SD1_CMD */
		cs-gpios   = <&gpio5 5 GPIO_ACTIVE_LOW>;	/* SD1_D3 */
		num-chipselects = <1>;

		mmc@0 {
			compatible = "mmc-spi-slot";
			reg = <0>;
			spi-max-frequency = <25000000>;
			bus-width = <1>;
			voltage-ranges = <3200 3400>;
			gpios = <&gpio5 17 GPIO_ACTIVE_LOW>;	/* SD2_CD (really) */
		};
	};
};

&iomuxc {
	pinctrl_uart2: uart2 {
		fsl,pins = <
			MX50_PAD_UART2_TXD__UART2_TXD_MUX	0x1e4
			MX50_PAD_UART2_RXD__UART2_RXD_MUX	0x1e4
		>;
	};

	pinctrl_i2c1: i2c1 {
		fsl,pins = <
			MX50_PAD_I2C1_SCL__I2C1_SCL		0x400001fd
			MX50_PAD_I2C1_SDA__I2C1_SDA		0x400001fd
		>;
	};

	pinctrl_i2c3: i2c3 {
		fsl,pins = <
			MX50_PAD_I2C3_SCL__I2C3_SCL		0x400001fd
			MX50_PAD_I2C3_SDA__I2C3_SDA		0x400001fd
		>;
	};

	/* TODO: interrupt line
	pinctrl_msp430: msp430 {
		fsl,pins = < >;
	}; */

	pinctrl_leds: leds {
		fsl,pins = <
			MX50_PAD_PWM1__GPIO6_24			0x0
		>;
	};

	pinctrl_gpiokeys: gpiokeys {
		fsl,pins = <
			MX50_PAD_CSPI_MISO__GPIO4_10		0x0
			MX50_PAD_SD2_D7__GPIO5_15		0x0
			MX50_PAD_KEY_ROW0__GPIO4_1		0x0
		>;
	};

	pinctrl_sd1: sd1 {
		fsl,pins = <
#if 1
			/* From u-boot */
			MX50_PAD_SD1_CMD__ESDHC1_CMD		0x1e4
			MX50_PAD_SD1_CLK__ESDHC1_CLK		0xd4
			MX50_PAD_SD1_D0__ESDHC1_DAT0		0x1d4
			MX50_PAD_SD1_D1__ESDHC1_DAT1		0x1d4
			MX50_PAD_SD1_D2__ESDHC1_DAT2		0x1d4
			MX50_PAD_SD1_D3__ESDHC1_DAT3		0x1d4
#else
			/* From kernel */
			MX50_PAD_SD1_CMD__ESDHC1_CMD		0x400000d3
			MX50_PAD_SD1_CLK__ESDHC1_CLK		0x400000d3
			MX50_PAD_SD1_D0__ESDHC1_DAT0		0xd3
			MX50_PAD_SD1_D1__ESDHC1_DAT1		0xd3
			MX50_PAD_SD1_D2__ESDHC1_DAT2		0xd3
			MX50_PAD_SD1_D3__ESDHC1_DAT3		0xd3
#endif
			/* Card detect GPIO */
			MX50_PAD_SD2_CD__GPIO5_17		0x0
		>;
	};

	pinctrl_sd1_gpio: sd1-gpio {
		fsl,pins = <
			MX50_PAD_SD1_CMD__GPIO5_1		0x0
			MX50_PAD_SD1_CLK__GPIO5_0		0x0
			MX50_PAD_SD1_D0__GPIO5_2		0x0
			MX50_PAD_SD1_D1__GPIO5_3		0x0
			MX50_PAD_SD1_D2__GPIO5_4		0x0
			MX50_PAD_SD1_D3__GPIO5_5		0x0
			MX50_PAD_SD2_CD__GPIO5_17		0x0
		>;
	};

	pinctrl_vmmc: vmmc {
		fsl,pins = <
			MX50_PAD_ECSPI1_MOSI__GPIO4_13		0x0
		>;
	};

	pinctrl_sd2: sd2 {
		/* TODO: check the mode flags */
		fsl,pins = <
			MX50_PAD_SD2_CMD__ESDHC2_CMD		0x1e4
			MX50_PAD_SD2_CLK__ESDHC2_CLK		0xd4
			MX50_PAD_SD2_D0__ESDHC2_DAT0		0x1d4
			MX50_PAD_SD2_D1__ESDHC2_DAT1		0x1d4
			MX50_PAD_SD2_D2__ESDHC2_DAT2		0x1d4
			MX50_PAD_SD2_D3__ESDHC2_DAT3		0x1d4
			MX50_PAD_SD2_D4__ESDHC2_DAT4		0x1d4
			MX50_PAD_SD2_D5__ESDHC2_DAT5		0x1d4
			MX50_PAD_SD2_D6__ESDHC2_DAT6		0x1d4
			MX50_PAD_SD2_D7__ESDHC2_DAT7		0x1d4
		>;
	};

	pinctrl_sd3: sd3 {
		/* TODO: check the mode flags */
		fsl,pins = <
			MX50_PAD_SD3_CMD__ESDHC3_CMD		0x1e4
			MX50_PAD_SD3_CLK__ESDHC3_CLK		0xd4
			MX50_PAD_SD3_D0__ESDHC3_DAT0		0x1d4
			MX50_PAD_SD3_D1__ESDHC3_DAT1		0x1d4
			MX50_PAD_SD3_D2__ESDHC3_DAT2		0x1d4
			MX50_PAD_SD3_D3__ESDHC3_DAT3		0x1d4
			MX50_PAD_SD3_D4__ESDHC3_DAT4		0x1d4
			MX50_PAD_SD3_D5__ESDHC3_DAT5		0x1d4
			MX50_PAD_SD3_D6__ESDHC3_DAT6		0x1d4
			MX50_PAD_SD3_D7__ESDHC3_DAT7		0x1d4
		>;
	};
};

&uart2 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_uart2>;
	status = "okay";
};

&i2c1 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_i2c1>;
	status = "okay";

	/* TODO: ektf2132 touch controller at 0x15 */
};

&i2c3 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_i2c3>;
	status = "okay";

	embedded-controller@43 {
		//pinctrl-names = "default";
		//pinctrl-0 = <&pinctrl_msp430>;

		compatible = "netronix,msp430-ec";
		reg = <0x43>;
		system-power-controller;
	};
};

&esdhc1 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_sd1>;

	max-frequency = <50000000>;
	bus-width = <4>;
	cd-gpios = <&gpio5 17 GPIO_ACTIVE_LOW>;
	disable-wp;

	/* External µSD card */
};

&esdhc2 {
	//status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_sd2>;

	//bus-width = <8>;
	bus-width = <4>;
	max-frequency = <25000000>;
	disable-wp;


	/* CyberTan WC121 SDIO WiFi */
//	Required function subnode properties:
//	- reg: Must contain the SDIO function number of the function this subnode
//	       describes. A value of 0 denotes the memory SD function, values from
//	       1 to 7 denote the SDIO functions. [TODO?]
};

&esdhc3 {
	//status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_sd3>;

	//bus-width = <8>;
	bus-width = <4>;
	broken-cd; /* TODO */
	max-frequency = <50000000>;
	disable-wp;
	vmmc-supply = <&vmmc>;

	/* Internal eMMC */
};