diff options
| author | Markus Niebel <Markus.Niebel@ew.tq-group.com> | 2025-12-16 16:39:25 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2025-12-30 11:24:04 +0300 |
| commit | 8adc841d43ebceabec996c9dcff6e82d3e585268 (patch) | |
| tree | 25e5d31d2999c9370497336e9011652d920ddfe8 | |
| parent | 8b6ffe54fde2375efdc034e253e71e8988da3c54 (diff) | |
| download | linux-8adc841d43ebceabec996c9dcff6e82d3e585268.tar.xz | |
arm64: dts: imx8mn-tqma8mqnl: fix LDO5 power off
Fix SD card removal caused by automatic LDO5 power off after boot
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.
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>
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx.dts | 13 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi | 22 |
2 files changed, 29 insertions, 6 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx.dts b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx.dts index d7f7f9aafb7d..0d009f4be804 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl-mba8mx.dts @@ -69,6 +69,10 @@ samsung,esc-clock-frequency = <20000000>; }; +®_usdhc2_vqmmc { + status = "okay"; +}; + &sai3 { assigned-clocks = <&clk IMX8MN_CLK_SAI3>; assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>; @@ -216,8 +220,7 @@ <MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4>, <MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4>, <MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4>, - <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>, - <MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x84>; + <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>; }; pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp { @@ -226,8 +229,7 @@ <MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4>, <MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4>, <MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4>, - <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>, - <MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x84>; + <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>; }; pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp { @@ -236,8 +238,7 @@ <MX8MN_IOMUXC_SD2_DATA0_USDHC2_DATA0 0x1d4>, <MX8MN_IOMUXC_SD2_DATA1_USDHC2_DATA1 0x1d4>, <MX8MN_IOMUXC_SD2_DATA2_USDHC2_DATA2 0x1d4>, - <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>, - <MX8MN_IOMUXC_GPIO1_IO04_USDHC2_VSELECT 0x84>; + <MX8MN_IOMUXC_SD2_DATA3_USDHC2_DATA3 0x1d4>; }; pinctrl_usdhc2_gpio: usdhc2-gpiogrp { diff --git a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi index ac6ce5d814c5..31a3ca137e63 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-tqma8mqnl.dtsi @@ -15,6 +15,20 @@ reg = <0x00000000 0x40000000 0 0x40000000>; }; + 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"; + }; + reserved-memory { #address-cells = <2>; #size-cells = <2>; @@ -218,6 +232,10 @@ vddio-supply = <&ldo3_reg>; }; +&usdhc2 { + vqmmc-supply = <®_usdhc2_vqmmc>; +}; + &usdhc3 { pinctrl-names = "default", "state_100mhz", "state_200mhz"; pinctrl-0 = <&pinctrl_usdhc3>; @@ -272,6 +290,10 @@ fsl,pins = <MX8MN_IOMUXC_SD2_RESET_B_GPIO2_IO19 0x84>; }; + pinctrl_reg_usdhc2_vqmmc: regusdhc2vqmmcgrp { + fsl,pins = <MX8MN_IOMUXC_GPIO1_IO04_GPIO1_IO4 0xc0>; + }; + pinctrl_usdhc3: usdhc3grp { fsl,pins = <MX8MN_IOMUXC_NAND_WE_B_USDHC3_CLK 0x1d4>, <MX8MN_IOMUXC_NAND_WP_B_USDHC3_CMD 0x1d2>, |