From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Date: Wed, 1 Mar 2023 10:55:15 +0100
Subject: [PATCH] arm64: dts: mediatek: mt8192-asurada: Fix voltage constraint
for Vgpu
References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: ff4c868ba8df9dcd144ab4943a50adca1cf33ba2
[ Upstream commit ff4c868ba8df9dcd144ab4943a50adca1cf33ba2 ]
The MT8192 SoC specifies a maximum voltage for the GPU's digital supply
of 0.88V and the GPU OPPs are declaring a maximum voltage of 0.80V.
In order to keep the GPU voltage in the safe range, change the maximum
voltage for mt6315@7's vbuck1 to 0.80V as sending, for any mistake,
1.193V would be catastrophic.
Fixes: 3183cb62b033 ("arm64: dts: mediatek: asurada: Add SPMI regulators")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230301095523.428461-12-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
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 9f12257a..41f9692c 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -1400,7 +1400,7 @@ mt6315_7_vbuck1: vbuck1 {
regulator-compatible = "vbuck1";
regulator-name = "Vgpu";
regulator-min-microvolt = <606250>;
- regulator-max-microvolt = <1193750>;
+ regulator-max-microvolt = <800000>;
regulator-enable-ramp-delay = <256>;
regulator-allowed-modes = <0 1 2>;
};
--
2.35.3