github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-31 03:27:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: dts: imx8mm-var-som-symphony: Enable uSD on USDHC2

Browse Source 
Enable the microSD slot on the VAR-SOM Symphony carrier board.

Configure USDHC2 with card-detect GPIO, pinctrl states for the supported
bus speeds and the required VMMC supply.

Update the VMMC regulator to match the latest carrier revision by moving
the enable GPIO to GPIO4_IO22 and adding the required off-on delay.

Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Stefano Radaelli 2026-03-19 19:40:28 +01:00 committed by Frank Li
parent 4e9088abea
commit 20aa2aee50
1 changed files with 57 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
arch/arm64/boot/dts/freescale/imx8mm-var-som-symphony.dts
View File

@ -24,7 +24,8 @@ reg_usdhc2_vmmc: regulator-usdhc2-vmmc {
regulator-name = "VSD_3V3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
gpio = <&gpio4 22 GPIO_ACTIVE_HIGH>;
off-on-delay-us = <20000>;
enable-active-high;
};
@ -220,6 +221,18 @@ &usbotg2 {
status = "okay";
};
/* SD */
&usdhc2 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;
pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
cd-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
vmmc-supply = <&reg_usdhc2_vmmc>;
bus-width = <4>;
status = "okay";
};
&pinctrl_fec1 {
fsl,pins = <
MX8MM_IOMUXC_ENET_MDC_ENET1_MDC 0x3
@ -280,7 +293,7 @@ MX8MM_IOMUXC_SAI3_TXD_GPIO5_IO1 0x120
pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
fsl,pins = <
MX8MM_IOMUXC_SD2_RESET_B_GPIO2_IO19 0x41
MX8MM_IOMUXC_SAI2_RXC_GPIO4_IO22 0x41
>;
};
@ -304,4 +317,46 @@ MX8MM_IOMUXC_UART4_RXD_UART4_DCE_RX 0x140
MX8MM_IOMUXC_UART4_TXD_UART4_DCE_TX 0x140
>;
};
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_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_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_GPIO1_IO04_USDHC2_VSELECT 0x1d0
>;
};
pinctrl_usdhc2_gpio: usdhc2gpiogrp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10 0xc1
>;
};
};