[PATCH v2 2/2] iommu/arm-smmu-qcom: add sdm670 adreno iommu compatible

[Dmitry Baryshkov]

On Wed, Nov 13, 2024 at 07:47:16PM -0500, Richard Acayan wrote:
> Add the compatible for the separate IOMMU on SDM670 for the Adreno GPU.
> 
> This IOMMU has the compatible strings:
> 
> 	"qcom,sdm670-smmu-v2", "qcom,adreno-smmu", "qcom,smmu-v2"
> 
> While the SMMU 500 doesn't need an entry for this specific SoC, the
> SMMU v2 compatible should have its own entry, as the fallback entry in
> arm-smmu.c handles "qcom,smmu-v2" without per-process page table support
> unless there is an entry here. This entry can't be the
> "qcom,adreno-smmu" compatible because dedicated GPU IOMMUs can also be
> SMMU 500 with different handling.
> 
> Signed-off-by: Richard Acayan <mailingradian at gmail.com>
> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 1 +
>  1 file changed, 1 insertion(+)


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>


> 
> diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> index 6372f3e25c4b..601fb878d0ef 100644
> --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> @@ -567,6 +567,7 @@ static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
>  	{ .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data },
>  	{ .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data },
>  	{ .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data },
> +	{ .compatible = "qcom,sdm670-smmu-v2", .data = &qcom_smmu_v2_data },
>  	{ .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data },
>  	{ .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data },
>  	{ .compatible = "qcom,sm6115-smmu-500", .data = &qcom_smmu_500_impl0_data},
> -- 
> 2.47.0
> 

-- 
With best wishes
Dmitry