linux-kernel - [PATCH AUTOSEL 5.2 07/85] arm64: dts: qcom: qcs404-evb: fix l3 min voltage

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Date:   Fri, 26 Jul 2019 09:38:17 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Niklas Cassel <niklas.cassel@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Sasha Levin <sashal@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 5.2 07/85] arm64: dts: qcom: qcs404-evb: fix l3 min voltage

From: Niklas Cassel <niklas.cassel@...aro.org>

[ Upstream commit 887b528c958f40b064d53edd0bfa9fea3a69eccd ]

The current l3 min voltage level is not supported by
the regulator (the voltage is not a multiple of the regulator step size),
so a driver requesting this exact voltage would fail, see discussion in:
https://patchwork.kernel.org/comment/22461199/

It was agreed upon to set a min voltage level that is a multiple of the
regulator step size.

There was actually a patch sent that did this:
https://patchwork.kernel.org/patch/10819313/

However, the commit 331ab98f8c4a ("arm64: dts: qcom: qcs404:
Fix voltages l3") that was applied is not identical to that patch.

Signed-off-by: Niklas Cassel <niklas.cassel@...aro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Andy Gross <agross@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/boot/dts/qcom/qcs404-evb.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi b/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi
index 2c3127167e3c..d987d6741e40 100644
--- a/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs404-evb.dtsi
@@ -118,7 +118,7 @@
 		};
 
 		vreg_l3_1p05: l3 {
-			regulator-min-microvolt = <1050000>;
+			regulator-min-microvolt = <1048000>;
 			regulator-max-microvolt = <1160000>;
 		};
 
-- 
2.20.1