linux-kernel - Re: [PATCH v4 2/2] arm64: dts: qcom: sc8280xp: Enable GPU related nodes

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Message-ID: <8f8d5e09-50a6-a83f-d4bb-3d7bc8c07162@linaro.org>
Date:   Wed, 14 Jun 2023 17:27:24 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, freedreno@...ts.freedesktop.org,
        johan@...nel.org, mani@...nel.org,
        Steev Klimaszewski <steev@...i.org>,
        Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [PATCH v4 2/2] arm64: dts: qcom: sc8280xp: Enable GPU related
 nodes

On 14.06.2023 16:22, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> Add memory reservation for the zap-shader and enable the Adreno SMMU,
> GPU clock controller, GMU and the GPU nodes for the SC8280XP CRD and the
> Lenovo ThinkPad X13s.
> 
> Tested-by: Steev Klimaszewski <steev@...i.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Tested-by: Johan Hovold <johan+linaro@...nel.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

one question below
>  arch/arm64/boot/dts/qcom/sc8280xp-crd.dts          | 14 ++++++++++++++
>  .../dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts     | 14 ++++++++++++++
>  2 files changed, 28 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> index cd7e0097d8bc..b566e403d1db 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> @@ -210,6 +210,11 @@ vreg_wwan: regulator-wwan {
>  	};
>  
>  	reserved-memory {
> +		gpu_mem: gpu-mem@...00000 {
Is it ever going to differ on other platforms, including the automotive ones?

Konrad
> +			reg = <0 0x8bf00000 0 0x2000>;
> +			no-map;
> +		};
> +
>  		linux,cma {
>  			compatible = "shared-dma-pool";
>  			size = <0x0 0x8000000>;
> @@ -390,6 +395,15 @@ &dispcc0 {
>  	status = "okay";
>  };
>  
> +&gpu {
> +	status = "okay";
> +
> +	zap-shader {
> +		memory-region = <&gpu_mem>;
> +		firmware-name = "qcom/sc8280xp/qcdxkmsuc8280.mbn";
> +	};
> +};
> +
>  &mdss0 {
>  	status = "okay";
>  };
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> index 5ae057ad6438..7cc3028440b6 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
> @@ -264,6 +264,11 @@ vreg_wwan: regulator-wwan {
>  	};
>  
>  	reserved-memory {
> +		gpu_mem: gpu-mem@...00000 {
> +			reg = <0 0x8bf00000 0 0x2000>;
> +			no-map;
> +		};
> +
>  		linux,cma {
>  			compatible = "shared-dma-pool";
>  			size = <0x0 0x8000000>;
> @@ -518,6 +523,15 @@ &dispcc0 {
>  	status = "okay";
>  };
>  
> +&gpu {
> +	status = "okay";
> +
> +	zap-shader {
> +		memory-region = <&gpu_mem>;
> +		firmware-name = "qcom/sc8280xp/LENOVO/21BX/qcdxkmsuc8280.mbn";
> +	};
> +};
> +
>  &mdss0 {
>  	status = "okay";
>  };