2024-01-09 12:17:58

by Philippe Schenker

Subject: [PATCH v1] arm64: dts: imx8mp-verdin: Label ldo5 and link to usdhc2

From: Philippe Schenker <[email protected]>

This commit labels LDO5 as `reg_vdd_sdio` in `imx8mp-verdin.dtsi` to
facilitate changing its voltage to 1.8V, necessary for an SDIO
peripheral that requires 1.8V at default and high-speed modes.

Additionally, it links `reg_vdd_sdio` to `&usdhc2`, aligning with the
hardware configuration specified in the datasheet.

Signed-off-by: Philippe Schenker <[email protected]>

---

arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
index 04f2083c4ab2..837db8961ba7 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
@@ -535,7 +535,7 @@ LDO4 {
regulator-name = "On-module +V3.3_ADC (LDO4)";
};

- LDO5 {
+ reg_vdd_sdio: LDO5 {
regulator-max-microvolt = <3300000>;
regulator-min-microvolt = <1800000>;
regulator-name = "On-module +V3.3_1.8_SD (LDO5)";
@@ -873,6 +873,7 @@ &usdhc2 {
pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_cd>;
pinctrl-3 = <&pinctrl_usdhc2_sleep>, <&pinctrl_usdhc2_cd_sleep>;
vmmc-supply = <&reg_usdhc2_vmmc>;
+ vqmmc-supply = <&reg_vdd_sdio>;
};

/* On-module eMMC */
--
2.34.1

2024-02-05 07:25:00

by Shawn Guo

Subject: Re: [PATCH v1] arm64: dts: imx8mp-verdin: Label ldo5 and link to usdhc2

On Tue, Jan 09, 2024 at 01:16:27PM +0100, Philippe Schenker wrote:
> From: Philippe Schenker <[email protected]>
>
> This commit labels LDO5 as `reg_vdd_sdio` in `imx8mp-verdin.dtsi` to
> facilitate changing its voltage to 1.8V, necessary for an SDIO
> peripheral that requires 1.8V at default and high-speed modes.
>
> Additionally, it links `reg_vdd_sdio` to `&usdhc2`, aligning with the
> hardware configuration specified in the datasheet.
>
> Signed-off-by: Philippe Schenker <[email protected]>

Applied, thanks!