Re: [Freedreno] [PATCH v7 6/6] arm6: dts: qcom: sm845: Set the compatible string for the GPU SMMU

[Rob Clark]

On Thu, Jun 4, 2020 at 1:57 PM Jordan Crouse <jcrouse@xxxxxxxxxxxxxx> wrote:
>
> Set the qcom,adreno-smmu compatible string for the GPU SMMU to enable
> split pagetables.
>
> Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
> ---
>
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 8eb5a31346d2..8b15cd74e9ba 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -3556,7 +3556,7 @@
>                 };
>
>                 adreno_smmu: iommu@5040000 {
> -                       compatible = "qcom,sdm845-smmu-v2", "qcom,smmu-v2";
> +                       compatible = "qcom,adreno-smmu", "qcom,smmu-v2";

Should this be something like:

   compatible = "qcom,adreno-smmu", "qcom,sdm845-smmu-v2", "qcom,smmu-v2";

so that new dtb still works with old kernel?

BR,
-R

>                         reg = <0 0x5040000 0 0x10000>;
>                         #iommu-cells = <1>;
>                         #global-interrupts = <2>;
> --
> 2.17.1
>
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