Re: [PATCH] dt-bindings: arm-smmu: Constrain clocks for newer Qualcomm variants

From: Rob Herring (Arm)

Date: Thu May 07 2026 - 15:32:13 EST



On Tue, 05 May 2026 09:14:54 +0200, Krzysztof Kozlowski wrote:
> Many of SMMU on Qualcomm SoCs come in two flavors using same front
> compatible but a bit different fallback:
>
> 1. For application processor, usually without any controllable
> clocks,
>
> 2. For the Adreno GPU, with some controllable clock(s) and using
> additionally qcom,adreno-smmu fallback compatible.
>
> Add missing constraints for Glymur SMMU on Adreno GPU and several other
> Qualcomm SMMUs for application processors, to restrict the clocks
> property to a specific value.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/iommu/arm,smmu.yaml | 38 ++++++++++++++++++-
> 1 file changed, 37 insertions(+), 1 deletion(-)
>

Acked-by: Rob Herring (Arm) <robh@xxxxxxxxxx>