[PATCH v2 10/11] arm64: dts: imx93-kontron: Fix SD card IO voltage control

Frieder Schrempf
2024-11-27T16:44:57Z

The OSM-S i.MX93 SoM doesn't have the VSELECT signal of the USDHC
controller connected to the PMICs SD_VSEL input. Instead SD_VSEL
is hardwired to low level. Let the driver know this in order to
use the proper register for reading and writing the voltage level.

This fixes SD card access with the latest hardware revision of
the Kontron OSM-S i.MX93 SoM.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
---
Changes for v2:
* new patch
---
arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi b/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
index 47c1363a2f99a..119a162070596 100644
--- a/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-kontron-osm-s.dtsi
@@ -189,6 +189,7 @@ reg_nvcc_sd: LDO5 {
regulator-name = "NVCC_SD (LDO5)";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
+ nxp,sd-vsel-fixed-low;
};
};
};
@@ -282,6 +283,7 @@ &usdhc2 { /* OSM-S SDIO_A */
pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;
pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;
vmmc-supply = <&reg_usdhc2_vcc>;
+ vqmmc-supply = <&reg_nvcc_sd>;
cd-gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
};

@@ -553,7 +555,6 @@ MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x40001382 /* SDIO_A_D0 */
MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x40001382 /* SDIO_A_D1 */
MX93_PAD_SD2_DATA2__USDHC2_DATA2 0x40001382 /* SDIO_A_D2 */
MX93_PAD_SD2_DATA3__USDHC2_DATA3 0x40001382 /* SDIO_A_D3 */
- MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x1d0
>;
};

@@ -565,7 +566,6 @@ MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x4000138e /* SDIO_A_D0 */
MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x4000138e /* SDIO_A_D1 */
MX93_PAD_SD2_DATA2__USDHC2_DATA2 0x4000138e /* SDIO_A_D2 */
MX93_PAD_SD2_DATA3__USDHC2_DATA3 0x4000138e /* SDIO_A_D3 */
- MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x1d0
>;
};

@@ -577,7 +577,6 @@ MX93_PAD_SD2_DATA0__USDHC2_DATA0 0x400013fe /* SDIO_A_D0 */
MX93_PAD_SD2_DATA1__USDHC2_DATA1 0x400013fe /* SDIO_A_D1 */
MX93_PAD_SD2_DATA2__USDHC2_DATA2 0x400013fe /* SDIO_A_D2 */
MX93_PAD_SD2_DATA3__USDHC2_DATA3 0x400013fe /* SDIO_A_D3 */
- MX93_PAD_SD2_VSELECT__USDHC2_VSELECT 0x1d0
>;
};

--
2.46.1