From: monish.chunara@oss.qualcomm.com
To: andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org,
ulf.hansson@linaro.org, nitin.rawat@oss.qualcomm.com,
pradeep.pragallapati@oss.qualcomm.com,
komal.bajaj@oss.qualcomm.com, monish.chunara@oss.qualcomm.com,
jsodhapa@qti.qualcomm.com
Subject: [PATCH] arm64: dts: qcom: talos-evk: fix sdhc_2 vqmmc-supply for UHS-I mode
Date: Tue, 9 Jun 2026 13:05:09 +0530 [thread overview]
Message-ID: <20260609073509.2453273-1-mchunara@oss.qualcomm.com> (raw)
From: Monish Chunara <monish.chunara@oss.qualcomm.com>
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: Jaypal Sodhaparmar <jsodhapa@qti.qualcomm.com>
Signed-off-by: Monish Chunara <monish.chunara@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/talos-evk-som.dtsi | 4 ++--
arch/arm64/boot/dts/qcom/talos-evk.dts | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi b/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
index 294354c034c3..f70823b31391 100644
--- a/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
+++ b/arch/arm64/boot/dts/qcom/talos-evk-som.dtsi
@@ -195,8 +195,8 @@ 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_LPM>;
regulator-allow-set-load;
regulator-allowed-modes = <RPMH_REGULATOR_MODE_LPM
diff --git a/arch/arm64/boot/dts/qcom/talos-evk.dts b/arch/arm64/boot/dts/qcom/talos-evk.dts
index b7f514fbc7b2..9ed48765ae6e 100644
--- a/arch/arm64/boot/dts/qcom/talos-evk.dts
+++ b/arch/arm64/boot/dts/qcom/talos-evk.dts
@@ -189,7 +189,7 @@ &sdhc_2 {
cd-gpios = <&tlmm 99 GPIO_ACTIVE_LOW>;
vmmc-supply = <&vreg_l10a>;
- vqmmc-supply = <&vreg_s4a>;
+ vqmmc-supply = <&vreg_l2a>;
status = "okay";
};
--
2.34.1
next reply other threads:[~2026-06-09 7:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 7:35 monish.chunara [this message]
2026-06-09 8:31 ` Jie Gan
2026-06-16 12:01 ` Konrad Dybcio
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