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Message-ID: <1736686f-d7b5-4433-aa45-2369a1e9b53e@linaro.org>
Date:   Tue, 26 Sep 2023 20:27:31 +0200
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Subject: Re: [PATCH 4/7] arm64: dts: qcom: sc7280: Add ZAP shader support
Content-Language: en-US
To:     Rob Clark <robdclark@gmail.com>,
        Abhinav Kumar <quic_abhinavk@quicinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        cros-qcom-dts-watchers@chromium.org,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Stephen Boyd <swboyd@chromium.org>,
        Akhil P Oommen <quic_akhilpo@quicinc.com>
Cc:     Marijn Suijten <marijn.suijten@somainline.org>,
        Luca Weiss <luca.weiss@fairphone.com>,
        Rob Clark <robdclark@chromium.org>,
        linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
        freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org
References: <20230926-topic-a643-v1-0-7af6937ac0a3@linaro.org>
 <20230926-topic-a643-v1-4-7af6937ac0a3@linaro.org>
From:   Konrad Dybcio <konrad.dybcio@linaro.org>
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On 26.09.2023 20:24, Konrad Dybcio wrote:
> Non-Chrome SC7280-family platforms ship a ZAP shader with the Adreno GPU.
> Describe that and make sure it doesn't interfere with Chrome devices.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi |  2 ++
>  arch/arm64/boot/dts/qcom/sc7280.dtsi               | 10 ++++++++++
>  2 files changed, 12 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi b/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> index 5d462ae14ba1..88fc67c3646e 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
> @@ -17,6 +17,8 @@
>   * required by the setup for Chrome boards.
>   */
>  
> +/delete-node/ &gpu_zap_mem;
> +/delete-node/ &gpu_zap_shader;
>  /delete-node/ &hyp_mem;
>  /delete-node/ &xbl_mem;
>  /delete-node/ &reserved_xbl_uefi_log;
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 66f1eb83cca7..c38ddf267ef5 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -152,6 +152,11 @@ ipa_fw_mem: memory@8b700000 {
>  			no-map;
>  		};
>  
> +		gpu_zap_mem: zap@8b71a000 {
> +			reg = <0 0x8b71a000 0 0x2000>;
> +			no-map;
> +		};
> +
>  		rmtfs_mem: memory@9c900000 {
>  			compatible = "qcom,rmtfs-mem";
>  			reg = <0x0 0x9c900000 0x0 0x280000>;
> @@ -2608,6 +2613,11 @@ gpu: gpu@3d00000 {
>  			nvmem-cells = <&gpu_speed_bin>;
>  			nvmem-cell-names = "speed_bin";
>  
> +			gpu_zap_shader: zap-shader {
> +				memory-region = <&gpu_zap_mem>;
> +				firmware-name = "qcom/a660_zap.mdt";
Gah. This line shouldn't have been there.

Considering it's not the only oops, I'll resend.

Konrad