From: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
[ 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@xxxxxxxxxxxxx>
Reviewed-by: Chen-yu Tsai <wenst@xxxxxxxxxxxx>
Tested-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230301095523.428461-12-angelogioacchino.delregno@xxxxxxxxxxxxx
Signed-off-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 4b314435f8fd6..50367da93cd79 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -935,7 +935,7 @@
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>;
};
--
2.39.2
