| Message ID | 20230301095523.428461-12-angelogioacchino.delregno@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Enable GPU with DVFS support on MediaTek SoCs | expand |
On Wed, Mar 1, 2023 at 5:55 PM AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> wrote: > > 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>
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi index df477eb89f21..8570b78c04a4 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi @@ -1408,7 +1408,7 @@ 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>; };
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> --- arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)