linux-kernel - Re: [PATCH v3 1/2] arm64: dts: qcom: sc7280: Add gpu support

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Message-ID: <CAE-0n53xMHudWaL7gdnN7jEPE1uLmetZaxYiqToO1AzTZ2R0Mw@mail.gmail.com>
Date:   Thu, 29 Jul 2021 12:19:32 -0500
From:   Stephen Boyd <swboyd@...omium.org>
To:     Akhil P Oommen <akhilpo@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Manaf Meethalavalappu Pallikunhi <manafm@...eaurora.org>,
        OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS 
        <devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        dri-devel@...ts.freedesktop.org,
        freedreno <freedreno@...ts.freedesktop.org>,
        linux-arm-msm@...r.kernel.org
Cc:     Jordan Crouse <jordan@...micpenguin.net>,
        Douglas Anderson <dianders@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Andy Gross <agross@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] arm64: dts: qcom: sc7280: Add gpu support

Quoting Akhil P Oommen (2021-07-28 04:54:01)
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 029723a..c88f366 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -592,6 +593,85 @@
>                         qcom,bcm-voters = <&apps_bcm_voter>;
>                 };
>
> +               gpu@...0000 {
> +                       compatible = "qcom,adreno-635.0", "qcom,adreno";
> +                       #stream-id-cells = <16>;
> +                       reg = <0 0x03d00000 0 0x40000>,
> +                             <0 0x03d9e000 0 0x1000>,
> +                             <0 0x03d61000 0 0x800>;
> +                       reg-names = "kgsl_3d0_reg_memory",
> +                                   "cx_mem",
> +                                   "cx_dbgc";
> +                       interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
> +                       iommus = <&adreno_smmu 0 0x401>;
> +                       operating-points-v2 = <&gpu_opp_table>;
> +                       qcom,gmu = <&gmu>;
> +                       interconnects = <&gem_noc MASTER_GFX3D 0 &mc_virt SLAVE_EBI1 0>;
> +                       interconnect-names = "gfx-mem";
> +
> +                       gpu_opp_table: opp-table {
> +                               compatible = "operating-points-v2";
> +
> +                               opp-550000000 {
> +                                       opp-hz = /bits/ 64 <550000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> +                                       opp-peak-kBps = <6832000>;
> +                               };
> +
> +                               opp-450000000 {

Why is 450000000 after 550000000? Is it on purpose? If not intended
please sort by frequency.

> +                                       opp-hz = /bits/ 64 <450000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> +                                       opp-peak-kBps = <4068000>;
> +                               };
> +
> +                               opp-315000000 {
> +                                       opp-hz = /bits/ 64 <315000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> +                                       opp-peak-kBps = <1804000>;
> +                               };
> +                       };
> +               };
> +