From: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com
[ 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... Signed-off-by: Matthias Brugger matthias.bgg@gmail.com Signed-off-by: Sasha Levin sashal@kernel.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 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>; };