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Message-ID: <402c7e38-7ad0-581f-146d-3db88e77d37c@linaro.org>
Date:   Mon, 23 May 2022 12:03:09 +0200
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Subject: Re: [PATCH 2/2] ARM: dts: imx: Add devicetree for Kobo Aura 2
Content-Language: en-US
To:     Andreas Kemnade <andreas@kemnade.info>, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, arnd@arndb.de, olof@lixom.net,
        soc@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de,
        kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
        l.stach@pengutronix.de, alexander.stein@ew.tq-group.com,
        marcel.ziswiler@toradex.com, linux@rempel-privat.de,
        matthias.schiffer@ew.tq-group.com, cniedermaier@dh-electronics.com,
        sebastian.reichel@collabora.com, leoyang.li@nxp.com,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, nicolecrivain@gmail.com
References: <20220522214415.254959-1-andreas@kemnade.info>
 <20220522214415.254959-3-andreas@kemnade.info>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20220522214415.254959-3-andreas@kemnade.info>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 22/05/2022 23:44, Andreas Kemnade wrote:
> This adds a devicetree for the Kobo Aura 2 Ebook reader. It is based
> on boards marked with "37NB-E60QL0+4B1". It is equipped with an i.MX6SL
> SoC.
> 
> Expected to work:
>   - Buttons
>   - Wifi (with external module)
>   - LED
>   - uSD
>   - USB
>   - RTC
>   - Fuel Gauge
>   - Backlight (if the required regulator is probed before the backlight,
>     specifying a supply is not supported by backlightdriver)
> 
> Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
> ---
>  arch/arm/boot/dts/Makefile              |   1 +
>  arch/arm/boot/dts/imx6sl-kobo-aura2.dts | 595 ++++++++++++++++++++++++
>  2 files changed, 596 insertions(+)
>  create mode 100644 arch/arm/boot/dts/imx6sl-kobo-aura2.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 7c16f8a2b738..549a457bb0de 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -661,6 +661,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
>  	imx6s-dhcom-drc02.dtb
>  dtb-$(CONFIG_SOC_IMX6SL) += \
>  	imx6sl-evk.dtb \
> +	imx6sl-kobo-aura2.dtb \
>  	imx6sl-tolino-shine2hd.dtb \
>  	imx6sl-tolino-shine3.dtb \
>  	imx6sl-tolino-vision5.dtb \
> diff --git a/arch/arm/boot/dts/imx6sl-kobo-aura2.dts b/arch/arm/boot/dts/imx6sl-kobo-aura2.dts
> new file mode 100644
> index 000000000000..3dc794c04abe
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx6sl-kobo-aura2.dts
> @@ -0,0 +1,595 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device tree for the Kobo Aura 2 ebook reader
> + *
> + * Name on mainboard is: 37NB-E60QL0+4B1
> + * Serials start with: E60QL2
> + *
> + * Copyright 2022 Andreas Kemnade
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include "imx6sl.dtsi"
> +
> +/ {
> +	model = "Kobo Aura 2";
> +	compatible = "kobo,aura2", "fsl,imx6sl";
> +
> +	aliases {
> +		mmc0 = &usdhc2;
> +		mmc1 = &usdhc3;
> +	};
> +
> +	chosen {
> +		stdout-path = &uart1;
> +	};
> +
> +	gpio_keys: gpio-keys {
> +		compatible = "gpio-keys";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_gpio_keys>;
> +
> +		cover {

Generic node names. You could add suffix if needed, so either key or
key-cover.

> +			label = "Cover";
> +			gpios = <&gpio5 12 GPIO_ACTIVE_LOW>;
> +			linux,code = <SW_LID>;
> +			linux,input-type = <EV_SW>;
> +			wakeup-source;
> +		};
> +
> +		power {
> +			label = "Power";
> +			gpios = <&gpio5 8 GPIO_ACTIVE_LOW>;
> +			linux,code = <KEY_POWER>;
> +			wakeup-source;
> +		};
> +	};
> +
> +	leds: leds {
> +		compatible = "gpio-leds";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_led>;
> +
> +		on {

The same. You also need property for color.

> +			label = "koboaura2:white:on";
> +			gpios = <&gpio5 7 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "timer";
> +		};
> +	};
> +
> +	memory@80000000 {
> +		device_type = "memory";
> +		reg = <0x80000000 0x10000000>;
> +	};
> +
> +	reg_wifi: regulator-wifi {
> +		compatible = "regulator-fixed";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_wifi_power>;
> +		regulator-name = "SD3_SPWR";
> +		regulator-min-microvolt = <3000000>;
> +		regulator-max-microvolt = <3000000>;
> +		gpio = <&gpio4 29 GPIO_ACTIVE_LOW>;
> +	};
> +
> +	wifi_pwrseq: wifi_pwrseq {

No underscores in node names.

> +		compatible = "mmc-pwrseq-simple";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_wifi_reset>;
> +		post-power-on-delay-ms = <20>;
> +		reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
> +	};
> +};
> +
> +&i2c1 {
> +	pinctrl-names = "default","sleep";
> +	pinctrl-0 = <&pinctrl_i2c1>;
> +	pinctrl-1 = <&pinctrl_i2c1_sleep>;
> +	status = "okay";
> +
> +	lm3630a: backlight@36 {
> +		compatible = "ti,lm3630a";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_lm3630a_bl_gpio>;
> +		reg = <0x36>;
> +		enable-gpios = <&gpio2 10 GPIO_ACTIVE_HIGH>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		led@0 {
> +			reg = <0>;
> +			led-sources = <0>;
> +			label = "backlight";
> +			default-brightness = <0>;
> +			max-brightness = <255>;
> +		};
> +	};
> +};
> +
> +&i2c2 {
> +	pinctrl-names = "default","sleep";
> +	pinctrl-0 = <&pinctrl_i2c2>;
> +	pinctrl-1 = <&pinctrl_i2c2_sleep>;
> +	clock-frequency = <100000>;
> +	status = "okay";
> +
> +	/* eKTF2232 at 0x15 */
> +	/* FP9928 at 0x48 */
> +};
> +
> +&i2c3 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_i2c3>;
> +	clock-frequency = <400000>;
> +	status = "okay";
> +
> +	ricoh619: pmic@32 {
> +		compatible = "ricoh,rc5t619";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pinctrl_ricoh_gpio>;
> +		reg = <0x32>;
> +		interrupt-parent = <&gpio5>;
> +		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
> +		system-power-controller;
> +
> +		regulators {
> +			dcdc1_reg: DCDC1 {
> +				regulator-name = "DCDC1";
> +				regulator-min-microvolt = <300000>;
> +				regulator-max-microvolt = <1875000>;
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <900000>;
> +					regulator-suspend-min-microvolt = <900000>;
> +				};
> +			};
> +
> +			/* Core3_3V3 */
> +			dcdc2_reg: DCDC2 {
> +				regulator-name = "DCDC2";
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <3100000>;
> +					regulator-suspend-min-microvolt = <3100000>;
> +				};
> +			};
> +
> +			dcdc3_reg: DCDC3 {
> +				regulator-name = "DCDC3";
> +				regulator-min-microvolt = <300000>;
> +				regulator-max-microvolt = <1875000>;
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <1140000>;
> +					regulator-suspend-min-microvolt = <1140000>;
> +				};
> +			};
> +
> +			/* Core4_1V2 */
> +			dcdc4_reg: DCDC4 {
> +				regulator-name = "DCDC4";
> +				regulator-min-microvolt = <1200000>;
> +				regulator-max-microvolt = <1200000>;
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <1140000>;
> +					regulator-suspend-min-microvolt = <1140000>;
> +				};
> +			};
> +
> +			/* Core4_1V8 */
> +			dcdc5_reg: DCDC5 {
> +				regulator-name = "DCDC5";
> +				regulator-min-microvolt = <1800000>;
> +				regulator-max-microvolt = <1800000>;
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <1700000>;
> +					regulator-suspend-min-microvolt = <1700000>;
> +				};
> +			};
> +
> +			/* IR_3V3 */
> +			ldo1_reg: LDO1  {
> +				regulator-name = "LDO1";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			/* Core1_3V3 */
> +			ldo2_reg: LDO2  {
> +				regulator-name = "LDO2";
> +				regulator-always-on;
> +				regulator-boot-on;
> +
> +				regulator-state-mem {
> +					regulator-on-in-suspend;
> +					regulator-suspend-max-microvolt = <3000000>;
> +					regulator-suspend-min-microvolt = <3000000>;
> +				};
> +			};
> +
> +			/* Core5_1V2 */
> +			ldo3_reg: LDO3  {
> +				regulator-name = "LDO3";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			ldo4_reg: LDO4 {
> +				regulator-name = "LDO4";
> +				regulator-boot-on;
> +			};
> +
> +			/* SPD_3V3 */
> +			ldo5_reg: LDO5 {
> +				regulator-name = "LDO5";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			/* DDR_0V6 */
> +			ldo6_reg: LDO6 {
> +				regulator-name = "LDO6";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			/* VDD_PWM */
> +			ldo7_reg: LDO7 {
> +				regulator-name = "LDO7";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			/* ldo_1v8 */
> +			ldo8_reg: LDO8 {
> +				regulator-name = "LDO8";
> +				regulator-min-microvolt = <1800000>;
> +				regulator-max-microvolt = <1800000>;
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +
> +			ldo9_reg: LDO9 {
> +				regulator-name = "LDO9";
> +				regulator-boot-on;
> +			};
> +
> +			ldo10_reg: LDO10 {
> +				regulator-name = "LDO10";
> +				regulator-boot-on;
> +			};
> +
> +			ldortc1_reg: LDORTC1  {
> +				regulator-name = "LDORTC1";
> +				regulator-always-on;
> +				regulator-boot-on;
> +			};
> +		};
> +	};
> +};
> +
> +&iomuxc {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_hog>;
> +
> +	pinctrl_gpio_keys: gpio-keysgrp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD1_DAT1__GPIO5_IO08  0x17059
> +			MX6SL_PAD_SD1_DAT4__GPIO5_IO12  0x17059
> +		>;
> +	};
> +
> +	pinctrl_hog: hoggrp {
> +		fsl,pins = <
> +			MX6SL_PAD_LCD_DAT0__GPIO2_IO20	0x79
> +			MX6SL_PAD_LCD_DAT1__GPIO2_IO21	0x79
> +			MX6SL_PAD_LCD_DAT2__GPIO2_IO22	0x79
> +			MX6SL_PAD_LCD_DAT3__GPIO2_IO23	0x79
> +			MX6SL_PAD_LCD_DAT4__GPIO2_IO24	0x79
> +			MX6SL_PAD_LCD_DAT5__GPIO2_IO25	0x79
> +			MX6SL_PAD_LCD_DAT6__GPIO2_IO26	0x79
> +			MX6SL_PAD_LCD_DAT7__GPIO2_IO27	0x79
> +			MX6SL_PAD_LCD_DAT8__GPIO2_IO28	0x79
> +			MX6SL_PAD_LCD_DAT9__GPIO2_IO29	0x79
> +			MX6SL_PAD_LCD_DAT10__GPIO2_IO30	0x79
> +			MX6SL_PAD_LCD_DAT11__GPIO2_IO31	0x79
> +			MX6SL_PAD_LCD_DAT12__GPIO3_IO00	0x79
> +			MX6SL_PAD_LCD_DAT13__GPIO3_IO01	0x79
> +			MX6SL_PAD_LCD_DAT14__GPIO3_IO02	0x79
> +			MX6SL_PAD_LCD_DAT15__GPIO3_IO03	0x79
> +			MX6SL_PAD_LCD_DAT16__GPIO3_IO04	0x79
> +			MX6SL_PAD_LCD_DAT17__GPIO3_IO05	0x79
> +			MX6SL_PAD_LCD_DAT18__GPIO3_IO06	0x79
> +			MX6SL_PAD_LCD_DAT19__GPIO3_IO07	0x79
> +			MX6SL_PAD_LCD_DAT20__GPIO3_IO08	0x79
> +			MX6SL_PAD_LCD_DAT21__GPIO3_IO09	0x79
> +			MX6SL_PAD_LCD_DAT22__GPIO3_IO10	0x79
> +			MX6SL_PAD_LCD_DAT23__GPIO3_IO11	0x79
> +			MX6SL_PAD_LCD_CLK__GPIO2_IO15		0x79
> +			MX6SL_PAD_LCD_ENABLE__GPIO2_IO16	0x79
> +			MX6SL_PAD_LCD_HSYNC__GPIO2_IO17	0x79
> +			MX6SL_PAD_LCD_VSYNC__GPIO2_IO18	0x79
> +			MX6SL_PAD_LCD_RESET__GPIO2_IO19	0x79
> +			MX6SL_PAD_KEY_COL3__GPIO3_IO30		0x79
> +			MX6SL_PAD_KEY_ROW7__GPIO4_IO07		0x79
> +			MX6SL_PAD_ECSPI2_MOSI__GPIO4_IO13	0x79
> +			MX6SL_PAD_KEY_COL5__GPIO4_IO02		0x79
> +		>;
> +	};
> +
> +	pinctrl_i2c1: i2c1grp {
> +		fsl,pins = <
> +			MX6SL_PAD_I2C1_SCL__I2C1_SCL	 0x4001f8b1
> +			MX6SL_PAD_I2C1_SDA__I2C1_SDA	 0x4001f8b1
> +		>;
> +	};
> +
> +	pinctrl_i2c1_sleep: i2c1grp-sleep {

Bindings require all nodes to finish with grp. Here and in other places.


> +		fsl,pins = <
> +			MX6SL_PAD_I2C1_SCL__I2C1_SCL	 0x400108b1
> +			MX6SL_PAD_I2C1_SDA__I2C1_SDA	 0x400108b1
> +		>;
> +	};
> +
> +	pinctrl_i2c2: i2c2grp {
> +		fsl,pins = <
> +			MX6SL_PAD_I2C2_SCL__I2C2_SCL	 0x4001f8b1
> +			MX6SL_PAD_I2C2_SDA__I2C2_SDA	 0x4001f8b1
> +		>;
> +	};
> +
> +	pinctrl_i2c2_sleep: i2c2grp-sleep {
> +		fsl,pins = <
> +			MX6SL_PAD_I2C2_SCL__I2C2_SCL	 0x400108b1
> +			MX6SL_PAD_I2C2_SDA__I2C2_SDA	 0x400108b1
> +		>;
> +	};
> +
> +	pinctrl_i2c3: i2c3grp {
> +		fsl,pins = <
> +			MX6SL_PAD_REF_CLK_24M__I2C3_SCL  0x4001f8b1
> +			MX6SL_PAD_REF_CLK_32K__I2C3_SDA  0x4001f8b1
> +		>;
> +	};
> +
> +	pinctrl_led: ledgrp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD1_DAT6__GPIO5_IO07 0x17059
> +		>;
> +	};
> +
> +	pinctrl_lm3630a_bl_gpio: lm3630a-bl-gpiogrp {
> +		fsl,pins = <
> +			MX6SL_PAD_EPDC_PWRCTRL3__GPIO2_IO10 0x10059 /* HWEN */
> +		>;
> +	};
> +
> +	pinctrl_ricoh_gpio: ricoh_gpiogrp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD1_CLK__GPIO5_IO15	0x1b8b1 /* ricoh619 chg */
> +			MX6SL_PAD_SD1_DAT0__GPIO5_IO11	0x1b8b1 /* ricoh619 irq */
> +			MX6SL_PAD_KEY_COL2__GPIO3_IO28	0x1b8b1 /* ricoh619 bat_low_int */
> +		>;
> +	};
> +
> +	pinctrl_uart1: uart1grp {
> +		fsl,pins = <
> +			MX6SL_PAD_UART1_TXD__UART1_TX_DATA 0x1b0b1
> +			MX6SL_PAD_UART1_RXD__UART1_RX_DATA 0x1b0b1
> +		>;
> +	};
> +
> +	pinctrl_uart4: uart4grp {
> +		fsl,pins = <
> +			MX6SL_PAD_KEY_ROW6__UART4_TX_DATA 0x1b0b1
> +			MX6SL_PAD_KEY_COL6__UART4_RX_DATA 0x1b0b1
> +		>;
> +	};
> +
> +	pinctrl_usbotg1: usbotg1grp {
> +		fsl,pins = <
> +			MX6SL_PAD_EPDC_PWRCOM__USB_OTG1_ID 0x17059
> +		>;
> +	};
> +
> +	pinctrl_usdhc2: usdhc2grp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_CMD__SD2_CMD		0x17059
> +			MX6SL_PAD_SD2_CLK__SD2_CLK		0x13059
> +			MX6SL_PAD_SD2_DAT0__SD2_DATA0		0x17059
> +			MX6SL_PAD_SD2_DAT1__SD2_DATA1		0x17059
> +			MX6SL_PAD_SD2_DAT2__SD2_DATA2		0x17059
> +			MX6SL_PAD_SD2_DAT3__SD2_DATA3		0x17059
> +		>;
> +	};
> +
> +	pinctrl_usdhc2_100mhz: usdhc2grp-100mhz {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_CMD__SD2_CMD		0x170b9
> +			MX6SL_PAD_SD2_CLK__SD2_CLK		0x130b9
> +			MX6SL_PAD_SD2_DAT0__SD2_DATA0		0x170b9
> +			MX6SL_PAD_SD2_DAT1__SD2_DATA1		0x170b9
> +			MX6SL_PAD_SD2_DAT2__SD2_DATA2		0x170b9
> +			MX6SL_PAD_SD2_DAT3__SD2_DATA3		0x170b9
> +		>;
> +	};
> +
> +	pinctrl_usdhc2_200mhz: usdhc2grp-200mhz {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_CMD__SD2_CMD		0x170f9
> +			MX6SL_PAD_SD2_CLK__SD2_CLK		0x130f9
> +			MX6SL_PAD_SD2_DAT0__SD2_DATA0		0x170f9
> +			MX6SL_PAD_SD2_DAT1__SD2_DATA1		0x170f9
> +			MX6SL_PAD_SD2_DAT2__SD2_DATA2		0x170f9
> +			MX6SL_PAD_SD2_DAT3__SD2_DATA3		0x170f9
> +		>;
> +	};
> +
> +	pinctrl_usdhc2_sleep: usdhc2grp-sleep {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_CMD__GPIO5_IO04		0x100f9
> +			MX6SL_PAD_SD2_CLK__GPIO5_IO05		0x100f9
> +			MX6SL_PAD_SD2_DAT0__GPIO5_IO01		0x100f9
> +			MX6SL_PAD_SD2_DAT1__GPIO4_IO30		0x100f9
> +			MX6SL_PAD_SD2_DAT2__GPIO5_IO03		0x100f9
> +			MX6SL_PAD_SD2_DAT3__GPIO4_IO28		0x100f9
> +		>;
> +	};
> +
> +	pinctrl_usdhc3: usdhc3grp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD3_CMD__SD3_CMD	0x11059
> +			MX6SL_PAD_SD3_CLK__SD3_CLK	0x11059
> +			MX6SL_PAD_SD3_DAT0__SD3_DATA0	0x11059
> +			MX6SL_PAD_SD3_DAT1__SD3_DATA1	0x11059
> +			MX6SL_PAD_SD3_DAT2__SD3_DATA2	0x11059
> +			MX6SL_PAD_SD3_DAT3__SD3_DATA3	0x11059
> +		>;
> +	};
> +
> +	pinctrl_usdhc3_100mhz: usdhc3grp-100mhz {
> +		fsl,pins = <
> +			MX6SL_PAD_SD3_CMD__SD3_CMD	0x170b9
> +			MX6SL_PAD_SD3_CLK__SD3_CLK	0x170b9
> +			MX6SL_PAD_SD3_DAT0__SD3_DATA0	0x170b9
> +			MX6SL_PAD_SD3_DAT1__SD3_DATA1	0x170b9
> +			MX6SL_PAD_SD3_DAT2__SD3_DATA2	0x170b9
> +			MX6SL_PAD_SD3_DAT3__SD3_DATA3	0x170b9
> +		>;
> +	};
> +
> +	pinctrl_usdhc3_200mhz: usdhc3grp-200mhz {
> +		fsl,pins = <
> +			MX6SL_PAD_SD3_CMD__SD3_CMD	0x170f9
> +			MX6SL_PAD_SD3_CLK__SD3_CLK	0x170f9
> +			MX6SL_PAD_SD3_DAT0__SD3_DATA0	0x170f9
> +			MX6SL_PAD_SD3_DAT1__SD3_DATA1	0x170f9
> +			MX6SL_PAD_SD3_DAT2__SD3_DATA2	0x170f9
> +			MX6SL_PAD_SD3_DAT3__SD3_DATA3	0x170f9
> +		>;
> +	};
> +
> +	pinctrl_usdhc3_sleep: usdhc3grp-sleep {
> +		fsl,pins = <
> +			MX6SL_PAD_SD3_CMD__GPIO5_IO21	0x100c1
> +			MX6SL_PAD_SD3_CLK__GPIO5_IO18	0x100c1
> +			MX6SL_PAD_SD3_DAT0__GPIO5_IO19	0x100c1
> +			MX6SL_PAD_SD3_DAT1__GPIO5_IO20	0x100c1
> +			MX6SL_PAD_SD3_DAT2__GPIO5_IO16	0x100c1
> +			MX6SL_PAD_SD3_DAT3__GPIO5_IO17	0x100c1
> +		>;
> +	};
> +
> +	pinctrl_wifi_power: wifi-powergrp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_DAT6__GPIO4_IO29	0x10059	/* WIFI_3V3_ON */
> +		>;
> +	};
> +
> +	pinctrl_wifi_reset: wifi-resetgrp {
> +		fsl,pins = <
> +			MX6SL_PAD_SD2_DAT7__GPIO5_IO00	0x10059	/* WIFI_RST */
> +		>;
> +	};
> +};
> +
> +&reg_vdd1p1 {
> +	vin-supply = <&dcdc2_reg>;
> +};
> +
> +&reg_vdd2p5 {
> +	vin-supply = <&dcdc2_reg>;
> +};
> +
> +&reg_arm {
> +	vin-supply = <&dcdc3_reg>;
> +};
> +
> +&reg_soc {
> +	vin-supply = <&dcdc1_reg>;
> +};
> +
> +&reg_pu {
> +	vin-supply = <&dcdc1_reg>;
> +};
> +
> +&snvs_rtc {
> +	/*
> +	 * We are using the RTC in the PMIC, but this one is not disabled
> +	 * in imx6sl.dtsi.
> +	 */
> +	status = "disabled";
> +};
> +
> +&uart1 {
> +	/* J4, through-holes */
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_uart1>;
> +	status = "okay";
> +};
> +
> +&uart4 {
> +	/* TP198, next to J4, SMD pads */
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_uart4>;
> +	status = "okay";
> +};
> +
> +&usdhc2 {
> +	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> +	pinctrl-0 = <&pinctrl_usdhc2>;
> +	pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
> +	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
> +	pinctrl-3 = <&pinctrl_usdhc2_sleep>;
> +	non-removable;
> +	status = "okay";
> +
> +	/* internal uSD card */
> +};
> +
> +&usdhc3 {
> +	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> +	pinctrl-0 = <&pinctrl_usdhc3>;
> +	pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
> +	pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
> +	pinctrl-3 = <&pinctrl_usdhc3_sleep>;
> +	vmmc-supply = <&reg_wifi>;
> +	mmc-pwrseq = <&wifi_pwrseq>;
> +	cap-power-off-card;
> +	non-removable;
> +	status = "okay";
> +
> +	/*
> +	 * RTL8189F SDIO WiFi
> +	 */
> +};
> +
> +&usbotg1 {
> +	pinctrl-names = "default";

You do not have pinctrl-0 here, so why names?

> +	disable-over-current;
> +	srp-disable;
> +	hnp-disable;
> +	adp-disable;
> +	status = "okay";
> +};


Best regards,
Krzysztof