Hi,
On Sat, Jul 04, 2020 at 12:25:34PM +0200, Clément Péron wrote:
> Add an Operating Performance Points table for the GPU to
> enable Dynamic Voltage & Frequency Scaling on the H6.
>
> The voltage range is set with minival voltage set to the target
> and the maximal voltage set to 1.2V. This allow DVFS framework to
> work properly on board with fixed regulator.
>
> Signed-off-by: Clément Péron <peron.clem@xxxxxxxxx>
That patch seems reasonable, why shouldn't we merge it?
> ---
> arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 80 ++++++++++++++++++++
> 1 file changed, 80 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> index 8f514a2169aa..a69f9e09a829 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> @@ -174,6 +174,7 @@ gpu: gpu@1800000 {
> clocks = <&ccu CLK_GPU>, <&ccu CLK_BUS_GPU>;
> clock-names = "core", "bus";
> resets = <&ccu RST_BUS_GPU>;
> + operating-points-v2 = <&gpu_opp_table>;
> #cooling-cells = <2>;
> status = "disabled";
> };
> @@ -1036,4 +1037,83 @@ map0 {
> };
> };
> };
> +
> + gpu_opp_table: gpu-opp-table {
> + compatible = "operating-points-v2";
> +
> + opp@216000000 {
> + opp-hz = /bits/ 64 <216000000>;
> + opp-microvolt = <810000 810000 1200000>;
> + };
All those nodes will create DTC warnings though.
Maxime
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