linux-kernel - Re: [PATCH v4 3/3] arm64: dts: qcom: sc7180: Add A618 gpu dt blob

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Date:   Wed, 5 Feb 2020 11:19:33 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Sharat Masetty <smasetty@...eaurora.org>
Cc:     freedreno <freedreno@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, dri-devel@...edesktop.org,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: Re: [PATCH v4 3/3] arm64: dts: qcom: sc7180: Add A618 gpu dt blob

Hi,

On Tue, Feb 4, 2020 at 11:02 PM Sharat Masetty <smasetty@...eaurora.org> wrote:
>
> This patch adds the required dt nodes and properties
> to enabled A618 GPU.
>
> Signed-off-by: Sharat Masetty <smasetty@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 102 +++++++++++++++++++++++++++++++++++
>  1 file changed, 102 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index f3fcc5c..63fff15 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -1043,6 +1043,108 @@
>                         };
>                 };
>
> +               gpu: gpu@...0000 {
> +                       compatible = "qcom,adreno-618.0", "qcom,adreno";
> +                       #stream-id-cells = <16>;
> +                       reg = <0 0x05000000 0 0x40000>, <0 0x0509e000 0 0x1000>,
> +                               <0 0x05061000 0 0x800>;
> +                       reg-names = "kgsl_3d0_reg_memory", "cx_mem", "cx_dbgc";
> +                       interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
> +                       iommus = <&adreno_smmu 0>;
> +                       operating-points-v2 = <&gpu_opp_table>;
> +                       qcom,gmu = <&gmu>;
> +
> +                       gpu_opp_table: opp-table {
> +                               compatible = "operating-points-v2";
> +
> +                               opp-800000000 {
> +                                       opp-hz = /bits/ 64 <800000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
> +                               };
> +
> +                               opp-650000000 {
> +                                       opp-hz = /bits/ 64 <650000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
> +                               };
> +
> +                               opp-565000000 {
> +                                       opp-hz = /bits/ 64 <565000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
> +                               };
> +
> +                               opp-430000000 {
> +                                       opp-hz = /bits/ 64 <430000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
> +                               };
> +
> +                               opp-355000000 {
> +                                       opp-hz = /bits/ 64 <355000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
> +                               };
> +
> +                               opp-267000000 {
> +                                       opp-hz = /bits/ 64 <267000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> +                               };
> +
> +                               opp-180000000 {
> +                                       opp-hz = /bits/ 64 <180000000>;
> +                                       opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
> +                               };
> +                       };
> +               };
> +
> +               adreno_smmu: iommu@...0000 {
> +                       compatible = "qcom,sc7180-smmu-v2", "qcom,smmu-v2";

As per prior discussion "qcom,sc7180-smmu-v2" needs to be added to the bindings.


> +                       reg = <0 0x05040000 0 0x10000>;
> +                       #iommu-cells = <1>;
> +                       #global-interrupts = <2>;
> +                       interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>,
> +                                       <GIC_SPI 231 IRQ_TYPE_LEVEL_HIGH>,
> +                                       <GIC_SPI 364 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 365 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 366 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 367 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 368 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 369 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 370 IRQ_TYPE_EDGE_RISING>,
> +                                       <GIC_SPI 371 IRQ_TYPE_EDGE_RISING>;
> +                       clocks = <&gcc GCC_GPU_MEMNOC_GFX_CLK>,
> +                               <&gcc GCC_GPU_CFG_AHB_CLK>,
> +                               <&gcc GCC_DDRSS_GPU_AXI_CLK>;
> +
> +                       clock-names = "bus", "iface", "mem_iface_clk";

As per discussion in v3 [1], "mem_iface_clk" is new and needs to be
added to the bindings. Presumably that patch should be posted / Acked
by Rob before we land this dts.

Other than relying on un-posted bindings, this looks sane to me and
this patch lets me bring the GPU up on my sc7180-based board.

Reviewed-by: Douglas Anderson <dianders@...omium.org>
Tested-by: Douglas Anderson <dianders@...omium.org>


-Doug

[1] https://lore.kernel.org/r/1e29097cc1cdf18671379f6420f872b0@codeaurora.org