linux-kernel - Re: [PATCH] arm64: dts: allwinner: Add GPU operating points for H6

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Date:   Wed, 29 May 2019 17:37:23 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "moderated list:ARM/Allwinner sunXi SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH] arm64: dts: allwinner: Add GPU operating points for H6

Hi Tomeu,

On Wed, 29 May 2019 at 17:33, Tomeu Vizoso <tomeu.vizoso@...labora.com> wrote:
>
> The GPU driver needs them to change the clock frequency and regulator
> voltage depending on the load.

As requested by Maxime, I have dropped these OPP table as It's taken
from vendor and untested with Panfrost.

https://lore.kernel.org/patchwork/patch/1060374/

Regards,
Clément

>
> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
> Cc: Clément Péron <peron.clem@...il.com>
>
> ---
>
> Feel free to pick up this patch if you are going to keep pushing this
> series forward.
>
> Thanks,
>
> Tomeu
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 66 ++++++++++++++++++++
>  1 file changed, 66 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> index 6aad06095c40..decf7b56e2df 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
> @@ -157,6 +157,71 @@
>                         allwinner,sram = <&ve_sram 1>;
>                 };
>
> +               gpu_opp_table: opp-table2 {
> +                       compatible = "operating-points-v2";
> +
> +                       opp00 {
> +                               opp-hz = /bits/ 64 <756000000>;
> +                               opp-microvolt = <1040000>;
> +                       };
> +                       opp01 {
> +                               opp-hz = /bits/ 64 <624000000>;
> +                               opp-microvolt = <950000>;
> +                       };
> +                       opp02 {
> +                               opp-hz = /bits/ 64 <576000000>;
> +                               opp-microvolt = <930000>;
> +                       };
> +                       opp03 {
> +                               opp-hz = /bits/ 64 <540000000>;
> +                               opp-microvolt = <910000>;
> +                       };
> +                       opp04 {
> +                               opp-hz = /bits/ 64 <504000000>;
> +                               opp-microvolt = <890000>;
> +                       };
> +                       opp05 {
> +                               opp-hz = /bits/ 64 <456000000>;
> +                               opp-microvolt = <870000>;
> +                       };
> +                       opp06 {
> +                               opp-hz = /bits/ 64 <432000000>;
> +                               opp-microvolt = <860000>;
> +                       };
> +                       opp07 {
> +                               opp-hz = /bits/ 64 <420000000>;
> +                               opp-microvolt = <850000>;
> +                       };
> +                       opp08 {
> +                               opp-hz = /bits/ 64 <408000000>;
> +                               opp-microvolt = <840000>;
> +                       };
> +                       opp09 {
> +                               opp-hz = /bits/ 64 <384000000>;
> +                               opp-microvolt = <830000>;
> +                       };
> +                       opp10 {
> +                               opp-hz = /bits/ 64 <360000000>;
> +                               opp-microvolt = <820000>;
> +                       };
> +                       opp11 {
> +                               opp-hz = /bits/ 64 <336000000>;
> +                               opp-microvolt = <810000>;
> +                       };
> +                       opp12 {
> +                               opp-hz = /bits/ 64 <312000000>;
> +                               opp-microvolt = <810000>;
> +                       };
> +                       opp13 {
> +                               opp-hz = /bits/ 64 <264000000>;
> +                               opp-microvolt = <810000>;
> +                       };
> +                       opp14 {
> +                               opp-hz = /bits/ 64 <216000000>;
> +                               opp-microvolt = <810000>;
> +                       };
> +               };
> +
>                 gpu: gpu@...0000 {
>                         compatible = "allwinner,sun50i-h6-mali",
>                                      "arm,mali-t720";
> @@ -168,6 +233,7 @@
>                         clocks = <&ccu CLK_GPU>, <&ccu CLK_BUS_GPU>;
>                         clock-names = "core", "bus";
>                         resets = <&ccu RST_BUS_GPU>;
> +                       operating-points-v2 = <&gpu_opp_table>;
>                         status = "disabled";
>                 };
>
> --
> 2.20.1
>