Date:   Thu, 1 Oct 2020 15:30:52 +0200
From:   Frieder Schrempf <frieder.schrempf@...tron.de>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Andreas Kemnade <andreas@...nade.info>,
        Anson Huang <Anson.Huang@....com>,
        Fabio Estevam <festevam@...il.com>,
        Li Yang <leoyang.li@....com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Michael Walle <michael@...le.cc>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Robert Jones <rjones@...eworks.com>,
        Rob Herring <robh@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sébastien Szymanski 
        <sebastien.szymanski@...adeus.com>,
        Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] arm64: dts: Add the Kontron i.MX8M Mini SoMs and
 baseboards

On 01.10.20 14:57, Krzysztof Kozlowski wrote:
> On Thu, Oct 01, 2020 at 02:06:58PM +0200, Schrempf Frieder wrote:
>> From: Frieder Schrempf <frieder.schrempf@...tron.de>
>>
>> Kontron Electronics GmbH offers small and powerful SoMs based on the
>> i.MX8M Mini SoC including PMIC, LPDDR4-RAM, eMMC and SPI NOR.
>>
>> The matching baseboards have the same form factor and similar interfaces
>> as the other boards from the Kontron "Board-Line" family, including
>> SD card, 1G Ethernet, 100M Ethernet, USB Host/OTG, digital IOs, RS232,
>> RS485, CAN, LVDS or HDMI, RTC and much more.
>>
>> Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
>> ---
>> Changes for v3:
>> * Remove needless status properties
>> * Remove needless regulator properties for reg_vdd_5v
>> * Use proper PHY reset properties in PHY node
>> * Use phy-connection-type instead of phy-mode
>> * Adjust PMIC node name and label
>> * Add over-current-active-low to usbotg1 node
>> * Remove redundant bus-width property from usdhc2 node
>> * Remove needless regulator-compatible from reg_vdd_snvs
>> * Set minimum voltage to 85mV for reg_vdd_snvs
>>
>> Changes for v2:
>> * Make the licensing less strict (GPL-2.0+ OR MIT)
>> * Merge the SoM and baseboard DTs for N8010 and N8011 into one as
>>    they only differ in DDR and eMMC size.
>> * Change compatibles and model strings to "n810x" and "N8010X".
>> * Only use a common memory node that will be updated by the
>>    bootloader reflecting the detected DDR size.
>> * Improve naming for 16MHz CAN fixed oscillator and set
>>    "clock-output-names".
>> * Consistently use "reg_" prefix for regulators.
>> * Remove "userspi" node.
>> * Slightly improve commit message.
>> ---
>>   .../dts/freescale/imx8mm-kontron-n801x-s.dts  | 323 ++++++++++++++++++
>>   .../freescale/imx8mm-kontron-n801x-som.dtsi   | 293 ++++++++++++++++
>>   2 files changed, 616 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
>>   create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
>> new file mode 100644
>> index 000000000000..389e735b2880
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts
>> @@ -0,0 +1,323 @@
>> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
>> +/*
>> + * Copyright (C) 2019 Kontron Electronics GmbH
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "imx8mm-kontron-n801x-som.dtsi"
>> +
>> +/ {
>> +	model = "Kontron i.MX8MM N801X S";
>> +	compatible = "kontron,imx8mm-n801x-s", "kontron,imx8mm-n801x-som", "fsl,imx8mm";
>> +
>> +	aliases {
>> +		ethernet1 = &usbnet;
>> +	};
>> +
>> +	/* fixed crystal dedicated to mcp2515 */
>> +	osc_can: clock-osc-can {
>> +		compatible = "fixed-clock";
>> +		#clock-cells = <0>;
>> +		clock-frequency = <16000000>;
>> +		clock-output-names = "osc-can";
>> +	};
>> +
>> +	leds {
>> +		compatible = "gpio-leds";
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&pinctrl_gpio_led>;
>> +
>> +		led1 {
>> +			label = "led1";
>> +			gpios = <&gpio4 17 GPIO_ACTIVE_LOW>;
>> +			linux,default-trigger = "heartbeat";
>> +		};
>> +
>> +		led2 {
>> +			label = "led2";
>> +			gpios = <&gpio4 19 GPIO_ACTIVE_LOW>;
>> +		};
>> +
>> +		led3 {
>> +			label = "led3";
>> +			gpios = <&gpio4 18 GPIO_ACTIVE_LOW>;
>> +		};
>> +
>> +		led4 {
>> +			label = "led4";
>> +			gpios = <&gpio4 8 GPIO_ACTIVE_LOW>;
>> +		};
>> +
>> +		led5 {
>> +			label = "led5";
>> +			gpios = <&gpio4 9 GPIO_ACTIVE_LOW>;
>> +		};
>> +
>> +		led6 {
>> +			label = "led6";
>> +			gpios = <&gpio4 7 GPIO_ACTIVE_LOW>;
>> +		};
>> +	};
>> +
>> +	pwm-beeper {
>> +		compatible = "pwm-beeper";
>> +		pwms = <&pwm2 0 5000 0>;
>> +	};
>> +
>> +	reg_rst_eth2: regulator-rst-eth2 {
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "rst-usb-eth2";
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&pinctrl_usb_eth2>;
>> +		gpio = <&gpio3 2 GPIO_ACTIVE_LOW>;
>> +	};
>> +
>> +	reg_vdd_5v: regulator-5v {
> 
> Why do you need it if it cannot be controlled? The CAN driver should use
> dummy regulator in absence of real one.

Yes, it's not really useful. I added it for the sake of completeness and 
to describe the hardware as best as possible. It feels better than using 
a dummy but of course it doesn't really make a difference.

> 
>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vdd-5v";
>> +		regulator-min-microvolt = <5000000>;
>> +		regulator-max-microvolt = <5000000>;
>> +	};
>> +};
>> +
>> +&ecspi2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_ecspi2>;
>> +	cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>;
>> +	status = "okay";
>> +
>> +	can0: can@0 {
>> +		compatible = "microchip,mcp2515";
>> +		reg = <0>;
>> +		pinctrl-names = "default";
>> +		pinctrl-0 = <&pinctrl_can>;
>> +		clocks = <&osc_can>;
>> +		interrupt-parent = <&gpio4>;
>> +		interrupts = <28 IRQ_TYPE_EDGE_FALLING>;
>> +		spi-max-frequency = <100000>;
>> +		vdd-supply = <&reg_vdd_3v3>;
>> +		xceiver-supply = <&reg_vdd_5v>;
>> +		status = "okay";
> 
> Status should not be needed as it is a default for new nodes.

Right, I forgot to drop this one.

> 
>> +	};
>> +};
>> +
>> +&ecspi3 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_ecspi3>;
>> +	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>;
>> +	status = "okay";
>> +};
>> +
>> +&fec1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_enet>;
>> +	phy-connection-type = "rgmii";
>> +	phy-handle = <&ethphy>;
>> +	status = "okay";
>> +
>> +	mdio {
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		ethphy: ethernet-phy@0 {
>> +			reg = <0>;
>> +			reset-assert-us = <100>;
>> +			reset-deassert-us = <100>;
>> +			reset-gpios = <&gpio4 27 GPIO_ACTIVE_LOW>;
>> +		};
>> +	};
>> +};
>> +
>> +&i2c4 {
>> +	clock-frequency = <100000>;
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_i2c4>;
>> +	status = "okay";
>> +
>> +	rtc@32 {
>> +		compatible = "epson,rx8900";
>> +		reg = <0x32>;
>> +	};
>> +};
>> +
>> +&pwm2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_pwm2>;
>> +	status = "okay";
>> +};
>> +
>> +&uart1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_uart1>;
>> +	uart-has-rtscts;
>> +	status = "okay";
>> +};
>> +
>> +&uart2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_uart2>;
>> +	linux,rs485-enabled-at-boot-time;
>> +	uart-has-rtscts;
>> +	status = "okay";
>> +};
>> +
>> +&usbotg1 {
>> +	dr_mode = "otg";
>> +	over-current-active-low;
>> +	status = "okay";
>> +};
>> +
>> +&usbotg2 {
>> +	dr_mode = "host";
>> +	disable-over-current;
>> +	#address-cells = <1>;
>> +	#size-cells = <0>;
>> +	status = "okay";
>> +
>> +	usb1@1 {
>> +		compatible = "usb424,9514";
>> +		reg = <1>;
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		usbnet: usbether@1 {
>> +			compatible = "usb424,ec00";
>> +			reg = <1>;
>> +			mac-address = [ 00 00 00 00 00 00 ];
> 
> I think you want here local-mac-address (to be filled by U-Boot).
> mac-address has slightly different meaning in dtschema.

Yes, I think you're right.

> 
>> +		};
>> +	};
>> +};
>> +
>> +&usdhc2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_usdhc2>;
>> +	vmmc-supply = <&reg_vdd_3v3>;
>> +	vqmmc-supply = <&reg_nvcc_sd>;
>> +	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
>> +	status = "okay";
>> +};
>> +
>> +&iomuxc {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_gpio>;
>> +
>> +	pinctrl_can: cangrp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SAI3_RXFS_GPIO4_IO28		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_ecspi2: ecspi2grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO		0x82
>> +			MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI		0x82
>> +			MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK		0x82
>> +			MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_ecspi3: ecspi3grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_UART2_RXD_ECSPI3_MISO		0x82
>> +			MX8MM_IOMUXC_UART1_TXD_ECSPI3_MOSI		0x82
>> +			MX8MM_IOMUXC_UART1_RXD_ECSPI3_SCLK		0x82
>> +			MX8MM_IOMUXC_UART2_TXD_GPIO5_IO25		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_enet: enetgrp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_ENET_MDC_ENET1_MDC			0x3
>> +			MX8MM_IOMUXC_ENET_MDIO_ENET1_MDIO		0x3
>> +			MX8MM_IOMUXC_ENET_TD3_ENET1_RGMII_TD3		0x1f
>> +			MX8MM_IOMUXC_ENET_TD2_ENET1_RGMII_TD2		0x1f
>> +			MX8MM_IOMUXC_ENET_TD1_ENET1_RGMII_TD1		0x1f
>> +			MX8MM_IOMUXC_ENET_TD0_ENET1_RGMII_TD0		0x1f
>> +			MX8MM_IOMUXC_ENET_RD3_ENET1_RGMII_RD3		0x91
>> +			MX8MM_IOMUXC_ENET_RD2_ENET1_RGMII_RD2		0x91
>> +			MX8MM_IOMUXC_ENET_RD1_ENET1_RGMII_RD1		0x91
>> +			MX8MM_IOMUXC_ENET_RD0_ENET1_RGMII_RD0		0x91
>> +			MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC		0x1f
>> +			MX8MM_IOMUXC_ENET_RXC_ENET1_RGMII_RXC		0x91
>> +			MX8MM_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL	0x91
>> +			MX8MM_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL	0x1f
>> +			MX8MM_IOMUXC_SAI2_MCLK_GPIO4_IO27		0x19 /* PHY RST */
>> +			MX8MM_IOMUXC_SAI2_TXC_GPIO4_IO25		0x19 /* ETH IRQ */
>> +		>;
>> +	};
>> +
>> +	pinctrl_gpio_led: gpioledgrp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_NAND_READY_B_GPIO3_IO16		0x19
>> +			MX8MM_IOMUXC_SAI1_RXD5_GPIO4_IO7		0x19
>> +			MX8MM_IOMUXC_SAI1_RXD6_GPIO4_IO8		0x19
>> +			MX8MM_IOMUXC_SAI1_RXD7_GPIO4_IO9		0x19
>> +			MX8MM_IOMUXC_SAI1_TXD5_GPIO4_IO17		0x19
>> +			MX8MM_IOMUXC_SAI1_TXD6_GPIO4_IO18		0x19
>> +			MX8MM_IOMUXC_SAI1_TXD7_GPIO4_IO19		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_gpio: gpiogrp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO07_GPIO1_IO7		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO09_GPIO1_IO9		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO11_GPIO1_IO11		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO06_GPIO1_IO6		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO08_GPIO1_IO8		0x19
>> +			MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10		0x19
>> +			MX8MM_IOMUXC_SAI3_MCLK_GPIO5_IO2		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_i2c4: i2c4grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_I2C4_SCL_I2C4_SCL			0x400001c3
>> +			MX8MM_IOMUXC_I2C4_SDA_I2C4_SDA			0x400001c3
>> +		>;
>> +	};
>> +
>> +	pinctrl_pwm2: pwm2grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SPDIF_RX_PWM2_OUT			0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_uart1: uart1grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SAI2_RXC_UART1_DCE_RX		0x140
>> +			MX8MM_IOMUXC_SAI2_RXFS_UART1_DCE_TX		0x140
>> +			MX8MM_IOMUXC_SAI2_RXD0_UART1_DCE_RTS_B		0x140
>> +			MX8MM_IOMUXC_SAI2_TXFS_UART1_DCE_CTS_B		0x140
>> +		>;
>> +	};
>> +
>> +	pinctrl_uart2: uart2grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX		0x140
>> +			MX8MM_IOMUXC_SAI3_TXC_UART2_DCE_TX		0x140
>> +			MX8MM_IOMUXC_SAI3_RXD_UART2_DCE_RTS_B		0x140
>> +			MX8MM_IOMUXC_SAI3_RXC_UART2_DCE_CTS_B		0x140
>> +		>;
>> +	};
>> +
>> +	pinctrl_usb_eth2: usbeth2grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_NAND_CE1_B_GPIO3_IO2		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_usdhc2: usdhc2grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK			0x190
>> +			MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD			0x1d0
>> +			MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0		0x1d0
>> +			MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1		0x1d0
>> +			MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2		0x1d0
>> +			MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3		0x1d0
>> +			MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12		0x019
>> +		>;
>> +	};
>> +};
>> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>> new file mode 100644
>> index 000000000000..5c6a660f4395
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>> @@ -0,0 +1,293 @@
>> +// SPDX-License-Identifier: GPL-2.0+ OR MIT
>> +/*
>> + * Copyright (C) 2019 Kontron Electronics GmbH
>> + */
>> +
>> +#include "imx8mm.dtsi"
>> +
>> +/ {
>> +	model = "Kontron i.MX8MM N801X SoM";
>> +	compatible = "kontron,imx8mm-n801x-som", "fsl,imx8mm";
>> +
>> +	memory@...00000 {
>> +		device_type = "memory";
>> +		/*
>> +		 * There are multiple SoM flavors with different DDR sizes.
>> +		 * The smallest is 1GB. For larger sizes the bootloader will
>> +		 * update the reg property.
>> +		 */
>> +		reg = <0x0 0x40000000 0 0x80000000>;
>> +	};
>> +
>> +	chosen {
>> +		stdout-path = &uart3;
>> +	};
>> +};
>> +
>> +&A53_0 {
>> +	cpu-supply = <&reg_vdd_arm>;
>> +};
>> +
>> +&A53_1 {
>> +	cpu-supply = <&reg_vdd_arm>;
>> +};
>> +
>> +&A53_2 {
>> +	cpu-supply = <&reg_vdd_arm>;
>> +};
>> +
>> +&A53_3 {
>> +	cpu-supply = <&reg_vdd_arm>;
>> +};
>> +
>> +&ddrc {
>> +	operating-points-v2 = <&ddrc_opp_table>;
>> +
>> +	ddrc_opp_table: opp-table {
>> +		compatible = "operating-points-v2";
>> +
>> +		opp-25M {
>> +			opp-hz = /bits/ 64 <25000000>;
>> +		};
>> +
>> +		opp-100M {
>> +			opp-hz = /bits/ 64 <100000000>;
>> +		};
>> +
>> +		opp-750M {
>> +			opp-hz = /bits/ 64 <750000000>;
>> +		};
>> +	};
>> +};
>> +
>> +&ecspi1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_ecspi1>;
>> +	cs-gpios = <&gpio5 9 GPIO_ACTIVE_HIGH>;
>> +	status = "okay";
>> +
>> +	spi-flash@0 {
>> +		compatible = "mxicy,mx25r1635f", "jedec,spi-nor";
>> +		spi-max-frequency = <80000000>;
>> +		reg = <0>;
>> +	};
>> +};
>> +
>> +&i2c1 {
>> +	clock-frequency = <400000>;
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_i2c1>;
>> +	status = "okay";
>> +
>> +	pca9450: pmic@25 {
>> +		compatible = "nxp,pca9450a";
>> +		reg = <0x25>;
>> +		pinctrl-0 = <&pinctrl_pmic>;
> 
> I guess this was copied from the same sources as other DTS. :) You need
> pinctrl-names, otherwise it won't work.

Of course!

> 
>> +		interrupt-parent = <&gpio1>;
>> +		interrupts = <0 GPIO_ACTIVE_LOW>;
> 
> Same as in other boards, wrong flag. I guess this is IRQ_TYPE_LEVEL_LOW.
> 
> I was fixing this recently in all boards (most already in next).

I remember seeing your fixes, but then I forgot about them. Thanks for 
reminding me.

> 
>> +
>> +		regulators {
>> +			reg_vdd_soc: BUCK1 {
>> +				regulator-name = "BUCK1";
> 
> All regulator names should be lowercase, as dtschema asks. Node names
> can stay uppercase, although I guess it would be better to have them
> lower as it is also naming convention for device tree.

Ok, I will change the regulator and node names to lowercase.

> 
>> +				regulator-min-microvolt = <800000>;
>> +				regulator-max-microvolt = <900000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +				regulator-ramp-delay = <3125>;
>> +			};
>> +
>> +			reg_vdd_arm: BUCK2 {
>> +				regulator-name = "BUCK2";
>> +				regulator-min-microvolt = <850000>;
>> +				regulator-max-microvolt = <950000>;
>> +				regulator-boot-on;
>> +				regulator-ramp-delay = <3125>;
>> +				nxp,dvs-run-voltage = <950000>;
>> +				nxp,dvs-standby-voltage = <850000>;
>> +			};
>> +
>> +			reg_vdd_dram: BUCK3 {
>> +				regulator-name = "BUCK3";
>> +				regulator-min-microvolt = <850000>;
>> +				regulator-max-microvolt = <900000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_vdd_3v3: BUCK4 {
>> +				regulator-name = "BUCK4";
>> +				regulator-min-microvolt = <3300000>;
>> +				regulator-max-microvolt = <3300000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_vdd_1v8: BUCK5 {
>> +				regulator-name = "BUCK5";
>> +				regulator-min-microvolt = <1800000>;
>> +				regulator-max-microvolt = <1800000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_nvcc_dram: BUCK6 {
>> +				regulator-name = "BUCK6";
>> +				regulator-min-microvolt = <1100000>;
>> +				regulator-max-microvolt = <1100000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_nvcc_snvs: LDO1 {
>> +				regulator-name = "LDO1";
>> +				regulator-min-microvolt = <1800000>;
>> +				regulator-max-microvolt = <1800000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_vdd_snvs: LDO2 {
>> +				regulator-name = "LDO2";
>> +				regulator-min-microvolt = <850000>;
>> +				regulator-max-microvolt = <900000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_vdda: LDO3 {
>> +				regulator-name = "LDO3";
>> +				regulator-min-microvolt = <1800000>;
>> +				regulator-max-microvolt = <1800000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_vdd_phy: LDO4 {
>> +				regulator-name = "LDO4";
>> +				regulator-min-microvolt = <900000>;
>> +				regulator-max-microvolt = <900000>;
>> +				regulator-boot-on;
>> +				regulator-always-on;
>> +			};
>> +
>> +			reg_nvcc_sd: LDO5 {
>> +				regulator-name = "LDO5";
>> +				regulator-min-microvolt = <1800000>;
>> +				regulator-max-microvolt = <3300000>;
>> +			};
>> +		};
>> +	};
>> +};
>> +
>> +&uart3 { /* console */
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_uart3>;
>> +	status = "okay";
>> +};
>> +
>> +&usdhc1 {
>> +	pinctrl-names = "default", "state_100mhz", "state_200mhz";
>> +	pinctrl-0 = <&pinctrl_usdhc1>;
>> +	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
>> +	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
>> +	vmmc-supply = <&reg_vdd_3v3>;
>> +	vqmmc-supply = <&reg_vdd_1v8>;
>> +	bus-width = <8>;
>> +	non-removable;
>> +	status = "okay";
>> +};
>> +
>> +&wdog1 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_wdog>;
>> +	fsl,ext-reset-output;
>> +	status = "okay";
>> +};
>> +
>> +&iomuxc {
>> +	pinctrl_ecspi1: ecspi1grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_ECSPI1_MISO_ECSPI1_MISO		0x82
>> +			MX8MM_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI		0x82
>> +			MX8MM_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK		0x82
>> +			MX8MM_IOMUXC_ECSPI1_SS0_GPIO5_IO9		0x19
>> +		>;
>> +	};
>> +
>> +	pinctrl_i2c1: i2c1grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL			0x400001c3
>> +			MX8MM_IOMUXC_I2C1_SDA_I2C1_SDA			0x400001c3
>> +		>;
>> +	};
>> +
>> +	pinctrl_pmic: pmicgrp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_GPIO1_IO00_GPIO1_IO0		0x41
> 
> Missing pull up.

Right.

> 
>> +		>;
>> +	};
>> +
>> +	pinctrl_uart3: uart3grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_UART3_RXD_UART3_DCE_RX		0x140
>> +			MX8MM_IOMUXC_UART3_TXD_UART3_DCE_TX		0x140
>> +		>;
>> +	};
>> +
>> +	pinctrl_usdhc1: usdhc1grp {
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK			0x190
>> +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD			0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA4_USDHC1_DATA4		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA5_USDHC1_DATA5		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA6_USDHC1_DATA6		0x1d0
>> +			MX8MM_IOMUXC_SD1_DATA7_USDHC1_DATA7		0x1d0
>> +			MX8MM_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0x019
>> +			MX8MM_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x190
>> +		>;
>> +	};
>> +
>> +	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> 
> Put "grp" at the end of node name, so for example"usdhc1-100mhzgrp".
> Here and below. Naming enforced by dtschema.

Ok, thanks for reviewing!

> 
>> +		fsl,pins = <
>> +			MX8MM_IOMUXC_SD1_CLK_USDHC1_CLK			0x194
>> +			MX8MM_IOMUXC_SD1_CMD_USDHC1_CMD			0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA0_USDHC1_DATA0		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA1_USDHC1_DATA1		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA2_USDHC1_DATA2		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA3_USDHC1_DATA3		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA4_USDHC1_DATA4		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA5_USDHC1_DATA5		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA6_USDHC1_DATA6		0x1d4
>> +			MX8MM_IOMUXC_SD1_DATA7_USDHC1_DATA7		0x1d4
>> +			MX8MM_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0x019
>> +			MX8MM_IOMUXC_SD1_STROBE_USDHC1_STROBE		0x194
>> +		>;
>> +	};
>> +
>> +	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> 
> Best regards,
> Krzysztof
> 

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