linux-kernel - [PATCH] arm64: dts: qcom: sdm845-db845c: Move LVS regulator nodes up

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Message-Id: <20230602161246.1855448-1-amit.pundir@linaro.org>
Date:   Fri,  2 Jun 2023 21:42:46 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Mark Brown <broonie@...nel.org>,
        Doug Anderson <dianders@...omium.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     regressions <regressions@...ts.linux.dev>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dt <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] arm64: dts: qcom: sdm845-db845c: Move LVS regulator nodes up

Move lvs1 and lvs2 regulator nodes up in the rpmh-regulators
list to workaround a boot regression uncovered by the upstream
commit ad44ac082fdf ("regulator: qcom-rpmh: Revert "regulator:
qcom-rpmh: Use PROBE_FORCE_SYNCHRONOUS"").

Without this fix DB845c fail to boot at times because one of the
lvs1 or lvs2 regulators fail to turn ON in time.

Link: https://lore.kernel.org/all/CAMi1Hd1avQDcDQf137m2auz2znov4XL8YGrLZsw5edb-NtRJRw@mail.gmail.com/
Signed-off-by: Amit Pundir <amit.pundir@...aro.org>
---
 arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 24 +++++++++++-----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index e14fe9bbb386..df2fde9063dc 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -301,6 +301,18 @@ regulators-0 {
 		vdd-l26-supply = <&vreg_s3a_1p35>;
 		vin-lvs-1-2-supply = <&vreg_s4a_1p8>;
 
+		vreg_lvs1a_1p8: lvs1 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+
+		vreg_lvs2a_1p8: lvs2 {
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <1800000>;
+			regulator-always-on;
+		};
+
 		vreg_s3a_1p35: smps3 {
 			regulator-min-microvolt = <1352000>;
 			regulator-max-microvolt = <1352000>;
@@ -381,18 +393,6 @@ vreg_l26a_1p2: ldo26 {
 			regulator-max-microvolt = <1200000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
-
-		vreg_lvs1a_1p8: lvs1 {
-			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <1800000>;
-			regulator-always-on;
-		};
-
-		vreg_lvs2a_1p8: lvs2 {
-			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <1800000>;
-			regulator-always-on;
-		};
 	};
 
 	regulators-1 {
-- 
2.25.1