linux-kernel - [PATCH] arm64: dts: mediatek: mt8192-asurada: Update min voltage constraint for Vgpu

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Date: Wed, 13 Mar 2024 21:51:36 +0800
From: Pin-yen Lin <treapking@...omium.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Nícolas F . R . A . Prado <nfraprado@...labora.com>,
	devicetree@...r.kernel.org,
	Pin-yen Lin <treapking@...omium.org>
Subject: [PATCH] arm64: dts: mediatek: mt8192-asurada: Update min voltage constraint for Vgpu

Although the minimum voltage listed on the GPU OPP table is 606250 uV,
the actual requested voltage could be even lower when the MTK Smart
Voltage Scaling (SVS) driver is enabled.

Set the minimum voltage to 300000 uV because it's supported by the
regulator.

Fixes: 3183cb62b033 ("arm64: dts: mediatek: asurada: Add SPMI regulators")
Signed-off-by: Pin-yen Lin <treapking@...omium.org>
---

 arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 43d80334610a..5cc5100a7c40 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -1448,7 +1448,7 @@ regulators {
 			mt6315_7_vbuck1: vbuck1 {
 				regulator-compatible = "vbuck1";
 				regulator-name = "Vgpu";
-				regulator-min-microvolt = <606250>;
+				regulator-min-microvolt = <300000>;
 				regulator-max-microvolt = <800000>;
 				regulator-enable-ramp-delay = <256>;
 				regulator-allowed-modes = <0 1 2>;
-- 
2.44.0.278.ge034bb2e1d-goog