[PATCH] arm64: dts: qcom: talos-lyra-evk: fix sdhc_2 vqmmc-supply for UHS-I mode

[PATCH] arm64: dts: qcom: talos-lyra-evk: fix sdhc_2 vqmmc-supply for UHS-I mode

[Monish Chunara]

SD card is detected as SDHS instead of UHS-I because sdhc_2 was
configured with vreg_s4a as vqmmc-supply, which cannot switch between
1.8V and 3.3V.

Switch vqmmc-supply to vreg_l2a and update its voltage range to
1800000-2960000 uV to enable proper UHS-I signaling.

Signed-off-by: Monish Chunara <monish.chunara@oss.qualcomm.com>

This patch depends on base series -
https://lore.kernel.org/all/20261027-talos-lyra-evk-v2-v3-2-658fd5a7ec99@oss.qualcomm.com/
---
 arch/arm64/boot/dts/qcom/talos-lyra-evk-som.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/talos-lyra-evk-som.dtsi b/arch/arm64/boot/dts/qcom/talos-lyra-evk-som.dtsi
index 7d9a08471906..65a2ca78106d 100644
--- a/arch/arm64/boot/dts/qcom/talos-lyra-evk-som.dtsi
+++ b/arch/arm64/boot/dts/qcom/talos-lyra-evk-som.dtsi
@@ -57,8 +57,8 @@ vreg_l1a: ldo1 {
 
 		vreg_l2a: ldo2 {
 			regulator-name = "vreg_l2a";
-			regulator-min-microvolt = <1650000>;
-			regulator-max-microvolt = <3100000>;
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2960000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 			regulator-allow-set-load;
 			regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
@@ -224,7 +224,7 @@ &sdhc_2 {
 	bus-width = <4>;
 	cd-gpios = <&tlmm 99 GPIO_ACTIVE_LOW>;
 	vmmc-supply = <&vreg_l10a>;
-	vqmmc-supply = <&vreg_s4a>;
+	vqmmc-supply = <&vreg_l2a>;
 
 	status = "okay";
 };
-- 
2.34.1

Re: [PATCH] arm64: dts: qcom: talos-lyra-evk: fix sdhc_2 vqmmc-supply for UHS-I mode

[Konrad Dybcio]

On 10/28/26 1:18 PM, Monish Chunara wrote:
> SD card is detected as SDHS instead of UHS-I because sdhc_2 was
> configured with vreg_s4a as vqmmc-supply, which cannot switch between
> 1.8V and 3.3V.
> 
> Switch vqmmc-supply to vreg_l2a and update its voltage range to
> 1800000-2960000 uV to enable proper UHS-I signaling.
> 
> Signed-off-by: Monish Chunara <monish.chunara@oss.qualcomm.com>
> 
> This patch depends on base series -
> https://lore.kernel.org/all/20261027-talos-lyra-evk-v2-v3-2-658fd5a7ec99@oss.qualcomm.com/
> ---

Please fix the base series then

Konrad