linux-kernel - Re: [PATCH v2 3/3] dts: arm64/sdm845: Add node for qcom,smmu-v2

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Date:   Tue, 14 Aug 2018 11:49:42 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     Vivek Gautam <vivek.gautam@...eaurora.org>, joro@...tes.org,
        robh+dt@...nel.org, andy.gross@...aro.org, will.deacon@....com,
        iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org
Cc:     mark.rutland@....com, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Jordan Crouse <jcrouse@...eaurora.org>
Subject: Re: [PATCH v2 3/3] dts: arm64/sdm845: Add node for qcom,smmu-v2

Hi Vivek,

On 14/08/18 11:27, Vivek Gautam wrote:
> Add device node for qcom,smmu-v2 available on sdm845.
> This smmu is available only to GPU device.
> 
> Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
> ---
>   arch/arm64/boot/dts/qcom/sdm845.dtsi | 23 +++++++++++++++++++++++
>   1 file changed, 23 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 1c2be2082f33..bd1ec5fa5146 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -6,6 +6,7 @@
>    */
>   
>   #include <dt-bindings/clock/qcom,gcc-sdm845.h>
> +#include <dt-bindings/clock/qcom,gpucc-sdm845.h>
>   #include <dt-bindings/clock/qcom,rpmh.h>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/soc/qcom,rpmh-rsc.h>
> @@ -989,6 +990,28 @@
>   			cell-index = <0>;
>   		};
>   
> +		gpu_smmu: iommu@...0000 {
> +			compatible = "qcom,sdm845-smmu-v2", "qcom,smmu-v2";

Which of "sdm845" or "msm8996"[1] is the actual SoC name here?

Robin.

[1] 
https://www.mail-archive.com/freedreno@lists.freedesktop.org/msg02659.html

> +			reg = <0x5040000 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>;
> +			clock-names = "bus", "iface";
> +			clocks = <&gcc GCC_GPU_MEMNOC_GFX_CLK>,
> +				 <&gcc GCC_GPU_CFG_AHB_CLK>;
> +
> +			/*power-domains = <&gpucc GPU_CX_GDSC>;*/
> +		};
> +
>   		apps_smmu: iommu@...00000 {
>   			compatible = "qcom,sdm845-smmu-500", "arm,mmu-500";
>   			reg = <0x15000000 0x80000>;
>