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arm64: dts: imx8mp-tqma8mpql: fix LDO5 power off

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Fix SD card removal caused by automatic LDO5 power off after boot:

LDO5: disabling
mmc1: card 59b4 removed
EXT4-fs (mmcblk1p2): shut down requested (2)
Aborting journal on device mmcblk1p2-8.
JBD2: I/O error when updating journal superblock for mmcblk1p2-8.

To prevent this, add vqmmc regulator for USDHC, using a GPIO-controlled
regulator that is supplied by LDO5. Since this is implemented on SoM but
used on baseboards with SD-card interface, implement the functionality
on SoM part and optionally enable it on baseboards if needed.

Fixes: 418d1d840e ("arm64: dts: freescale: add initial device tree for TQMa8MPQL with i.MX8MP")
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Markus Niebel 2025-07-31 11:16:52 +02:00 • committed by Shawn Guo
parent 8f5ae30d69
commit 5245dc5ff9
3 changed files with 36 additions and 12 deletions
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13
arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mp-ras314.dts
View file

@ -467,6 +467,10 @@
status = "okay";
};
&reg_usdhc2_vqmmc {
status = "okay";
};
&sai5 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai5>;
@ -876,8 +880,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d2>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d2>;
};
pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
@ -886,8 +889,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>;
};
pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
@ -896,8 +898,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>;
};
pinctrl_usdhc2_gpio: usdhc2-gpiogrp {

13
arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl.dts
View file

@ -604,6 +604,10 @@
status = "okay";
};
&reg_usdhc2_vqmmc {
status = "okay";
};
&sai3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai3>;
@ -983,8 +987,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d2>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d2>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d2>;
};
pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
@ -993,8 +996,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>;
};
pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
@ -1003,8 +1005,7 @@
<MX8MP_IOMUXC_SD2_DATA0__USDHC2_DATA0 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA1__USDHC2_DATA1 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA2__USDHC2_DATA2 0x1d4>,
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>,
<MX8MP_IOMUXC_GPIO1_IO04__USDHC2_VSELECT 0xc0>;
<MX8MP_IOMUXC_SD2_DATA3__USDHC2_DATA3 0x1d4>;
};
pinctrl_usdhc2_gpio: usdhc2-gpiogrp {

22
arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
View file

@ -24,6 +24,20 @@
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_usdhc2_vqmmc: regulator-usdhc2-vqmmc {
compatible = "regulator-gpio";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_reg_usdhc2_vqmmc>;
regulator-name = "V_SD2";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
states = <1800000 0x1>,
<3300000 0x0>;
vin-supply = <&ldo5_reg>;
status = "disabled";
};
};
&A53_0 {
@ -184,6 +198,10 @@
};
};
&usdhc2 {
vqmmc-supply = <&reg_usdhc2_vqmmc>;
};
&usdhc3 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc3>;
@ -233,6 +251,10 @@
fsl,pins = <MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19 0x10>;
};
pinctrl_reg_usdhc2_vqmmc: regusdhc2vqmmcgrp {
fsl,pins = <MX8MP_IOMUXC_GPIO1_IO04__GPIO1_IO04 0xc0>;
};
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x194>,
<MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD 0x1d4>,