linux-kernel - [PATCH 3/4] ARM: dts: qcom: msm8226-motorola-falcon: limit TPS65132 to 5.4V

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Message-ID: <b67ed6c7813fa52cf00b473dded9b5042102f593.1746711762.git.stano.jakubek@gmail.com>
Date: Thu, 8 May 2025 16:11:27 +0200
From: Stanislav Jakubek <stano.jakubek@...il.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, phone-devel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] ARM: dts: qcom: msm8226-motorola-falcon: limit TPS65132
 to 5.4V

After some digging in downstream sources, it was found that the TPS65132
outputs are fixed to +5.4V and -5.4V respectively. This is further confirmed
on runtime through debugfs, the troubleshooting guide confirms this as well.
Specify these limits as such.

Signed-off-by: Stanislav Jakubek <stano.jakubek@...il.com>
---
 arch/arm/boot/dts/qcom/msm8226-motorola-falcon.dts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/qcom/msm8226-motorola-falcon.dts b/arch/arm/boot/dts/qcom/msm8226-motorola-falcon.dts
index e2bf292159fa9..d6d5a86491aac 100644
--- a/arch/arm/boot/dts/qcom/msm8226-motorola-falcon.dts
+++ b/arch/arm/boot/dts/qcom/msm8226-motorola-falcon.dts
@@ -147,8 +147,8 @@ regulator@3e {
 
 		reg_lcd_pos: outp {
 			regulator-name = "outp";
-			regulator-min-microvolt = <4000000>;
-			regulator-max-microvolt = <6000000>;
+			regulator-min-microvolt = <5400000>;
+			regulator-max-microvolt = <5400000>;
 			regulator-active-discharge = <1>;
 			regulator-boot-on;
 			enable-gpios = <&tlmm 31 GPIO_ACTIVE_HIGH>;
@@ -156,8 +156,8 @@ reg_lcd_pos: outp {
 
 		reg_lcd_neg: outn {
 			regulator-name = "outn";
-			regulator-min-microvolt = <4000000>;
-			regulator-max-microvolt = <6000000>;
+			regulator-min-microvolt = <5400000>;
+			regulator-max-microvolt = <5400000>;
 			regulator-active-discharge = <1>;
 			regulator-boot-on;
 			enable-gpios = <&tlmm 33 GPIO_ACTIVE_HIGH>;
-- 
2.43.0