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u-boot/arch/arm/dts/imx8mm-kontron-bl.dts
Frieder Schrempf 8fd4c05cec imx: kontron-sl-mx8mm: Use the VSELECT signal to switch SD card IO voltage 
It turns out that it is not necessary to declare the VSELECT signal as
GPIO and let the PMIC driver set it to a fixed high level. This switches
the voltage between 3.3V and 1.8V by setting the PMIC register for LDO5
accordingly.

Instead we can do it like other boards already do and simply mux the
VSELECT signal of the USDHC interface to the pin. This makes sure that
the correct voltage is selected by setting the PMIC's SD_VSEL input
to high or low accordingly.

Reported-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Heiko Thiery <heiko.thiery@gmail.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
2022-10-20 17:35:51 +02:00

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// SPDX-License-Identifier: GPL-2.0+ OR MIT
/*
* Copyright (C) 2019 Kontron Electronics GmbH
*/
/dts-v1/;
#include "imx8mm-kontron-sl.dtsi"
/ {
model = "Kontron BL i.MX8MM (N801X S)";
compatible = "kontron,imx8mm-bl", "kontron,imx8mm-sl", "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_HIGH>;
enable-active-high;
regulator-always-on;
};
reg_vdd_5v: regulator-5v {
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 = <10000000>;
vdd-supply = <&reg_vdd_3v3>;
xceiver-supply = <&reg_vdd_5v>;
};
};
&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-rxid";
phy-handle = <&ethphy>;
status = "okay";
mdio {
#address-cells = <1>;
#size-cells = <0>;
ethphy: ethernet-phy@0 {
reg = <0>;
reset-assert-us = <1>;
reset-deassert-us = <15000>;
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: ethernet@1 {
compatible = "usb424,ec00";
reg = <1>;
local-mac-address = [ 00 00 00 00 00 00 ];
};
};
};
&usdhc2 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc2>;
pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
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
MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
fsl,pins = <
MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK 0x194
MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d4
MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4
MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4
MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4
MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4
MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12 0x019
MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
fsl,pins = <
MX8MM_IOMUXC_SD2_CLK_USDHC2_CLK 0x196
MX8MM_IOMUXC_SD2_CMD_USDHC2_CMD 0x1d6
MX8MM_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d6
MX8MM_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d6
MX8MM_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d6
MX8MM_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d6
MX8MM_IOMUXC_SD2_CD_B_GPIO2_IO12 0x019
MX8MM_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
};
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