linux-kernel - [PATCH v2 4/4] arm64: dts: mediatek: mt8186-corsola: Update min voltage constraint for Vgpu

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Date: Fri, 15 Mar 2024 19:16:05 +0800
From: Pin-yen Lin <treapking@...omium.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-arm-kernel@...ts.infradead.org,
	Chen-Yu Tsai <wenst@...omium.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Nícolas F . R . A . Prado <nfraprado@...labora.com>,
	linux-mediatek@...ts.infradead.org,
	Pin-yen Lin <treapking@...omium.org>
Subject: [PATCH v2 4/4] arm64: dts: mediatek: mt8186-corsola: Update min voltage constraint for Vgpu

The requested voltage could be lower than the minimum voltage on the
GPU OPP table when the MTK Smart Voltage Scaling (SVS) driver is
enabled, so update the minimum voltage constraint from 600000 uV to
500000 uV as listed on the mt6366 datasheet.

Fixes: 8855d01fb81f ("arm64: dts: mediatek: Add MT8186 Krabby platform based Tentacruel / Tentacool")
Signed-off-by: Pin-yen Lin <treapking@...omium.org>

---

Changes in v2:
- New in v2

 arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
index 3dea28f1d806..1807e9d6cb0e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
@@ -1296,7 +1296,7 @@ mt6366_vgpu_reg: vgpu {
 				 * regulator coupling requirements.
 				 */
 				regulator-name = "ppvar_dvdd_vgpu";
-				regulator-min-microvolt = <600000>;
+				regulator-min-microvolt = <500000>;
 				regulator-max-microvolt = <950000>;
 				regulator-ramp-delay = <6250>;
 				regulator-enable-ramp-delay = <200>;
-- 
2.44.0.291.gc1ea87d7ee-goog