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

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Date:   Wed, 14 Jun 2023 08:58:23 -0700
From:   Bjorn Andersson <andersson@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        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 Wed, Jun 14, 2023 at 05:27:24PM +0200, Konrad Dybcio wrote:
> 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>
> 

Thanks.

> 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?
> 

The memory maps for the two live different lives.

Regards,
Bjorn

> 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";
> >  };