Re: [PATCH v3 1/2] arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards

From: Krzysztof Kozlowski
Date: Thu Oct 01 2020 - 08:57:33 EST

On Thu, Oct 01, 2020 at 02:06:58PM +0200, Schrempf Frieder wrote:
> From: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx>
>
> 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@xxxxxxxxxx>
> ---
> 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.

> + 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.

> + };
> +};
> +
> +&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.

> + };
> + };
> +};
> +
> +&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@40000000 {
> + 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.

> + 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).

> +
> + 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.

> + 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.

> + >;
> + };
> +
> + 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.

> + 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