| Message ID | 20230223134345.82625-3-angelogioacchino.delregno@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Enable GPU with DVFS support on MediaTek SoCs | expand |
On Thu, Feb 23, 2023 at 9:43 PM AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> wrote: > > Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU > with the platform specific vmin/vmax for the highest possible SoC > binning. The maximum voltage numbers don't match the existing OPP table though. > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > --- > arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi > index de9778c85b94..63952c1251df 100644 > --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi > +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi > @@ -401,6 +401,9 @@ &mt6358codec { > }; > > &mt6358_vgpu_reg { > + regulator-min-microvolt = <625000>; > + regulator-max-microvolt = <900000>; > + > regulator-coupled-with = <&mt6358_vsram_gpu_reg>; > regulator-coupled-max-spread = <100000>; > }; > @@ -416,6 +419,9 @@ &mt6358_vsim2_reg { > }; > > &mt6358_vsram_gpu_reg { > + regulator-min-microvolt = <850000>; > + regulator-max-microvolt = <1000000>; > + > regulator-coupled-with = <&mt6358_vgpu_reg>; > regulator-coupled-max-spread = <100000>; > }; > -- > 2.39.2 >
Il 24/02/23 10:50, Chen-Yu Tsai ha scritto: > On Thu, Feb 23, 2023 at 9:43 PM AngeloGioacchino Del Regno > <angelogioacchino.delregno@collabora.com> wrote: >> >> Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU >> with the platform specific vmin/vmax for the highest possible SoC >> binning. > > The maximum voltage numbers don't match the existing OPP table though. The OPP table that we've got in mt8183.dtsi does not declare frequencies for the highest binning for this SoC, I guess because there was no way to check fuses to restrict the table to bin XYZ. These maximum voltages are - true - higher compared to the highest voltage in the GPU OPP table, but they're still in spec (check datasheets!). Should I reword the commit description? Regards, Angelo > >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> >> --- >> arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi >> index de9778c85b94..63952c1251df 100644 >> --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi >> +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi >> @@ -401,6 +401,9 @@ &mt6358codec { >> }; >> >> &mt6358_vgpu_reg { >> + regulator-min-microvolt = <625000>; >> + regulator-max-microvolt = <900000>; >> + >> regulator-coupled-with = <&mt6358_vsram_gpu_reg>; >> regulator-coupled-max-spread = <100000>; >> }; >> @@ -416,6 +419,9 @@ &mt6358_vsim2_reg { >> }; >> >> &mt6358_vsram_gpu_reg { >> + regulator-min-microvolt = <850000>; >> + regulator-max-microvolt = <1000000>; >> + >> regulator-coupled-with = <&mt6358_vgpu_reg>; >> regulator-coupled-max-spread = <100000>; >> }; >> -- >> 2.39.2 >>
diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi index de9778c85b94..63952c1251df 100644 --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi @@ -401,6 +401,9 @@ &mt6358codec { }; &mt6358_vgpu_reg { + regulator-min-microvolt = <625000>; + regulator-max-microvolt = <900000>; + regulator-coupled-with = <&mt6358_vsram_gpu_reg>; regulator-coupled-max-spread = <100000>; }; @@ -416,6 +419,9 @@ &mt6358_vsim2_reg { }; &mt6358_vsram_gpu_reg { + regulator-min-microvolt = <850000>; + regulator-max-microvolt = <1000000>; + regulator-coupled-with = <&mt6358_vgpu_reg>; regulator-coupled-max-spread = <100000>; };
Override the PMIC-default voltage constraints for VGPU and VSRAM_GPU with the platform specific vmin/vmax for the highest possible SoC binning. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> --- arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 6 ++++++ 1 file changed, 6 insertions(+)