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Message-ID: <c848cb8d-c040-4d4b-8d7b-558f2e041f0c@arm.com>
Date: Wed, 16 Jul 2025 11:33:54 +0100
From: Robin Murphy <robin.murphy@....com>
To: Konrad Dybcio <konradybcio@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org,
 Will Deacon <will@...nel.org>, Joerg Roedel <joro@...tes.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Rob Clark <robin.clark@....qualcomm.com>,
 linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v2 3/4] dt-bindings: arm-smmu: Remove sdm845-cheza
 specific entry

On 2025-07-16 11:16 am, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> The firmware on SDM845-based Cheza boards did not provide the same
> level of feature support for SMMUs (particularly around the Adreno
> GPU integration).
> 
> Now that Cheza is being removed from the kernel (almost none exist at
> this point in time), retire the entry as well.
> 
> Most notably, it's not being marked as deprecated instead, as there is
> no indication that any more of those ~7 year old devboards will be
> built.

And even if someone did want to make a new batch, they'd have no excuse 
not to fix the firmware by now...

Acked-by: Robin Murphy <robin.murphy@....com>

> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> ---
>   Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 ----
>   1 file changed, 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> index 7b9d5507d6ccd6b845a57eeae59fe80ba75cc652..646814ec7d15f6d8a0136de73b7eaddae232ea64 100644
> --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
> @@ -132,10 +132,6 @@ properties:
>                 - qcom,sm7150-smmu-v2
>             - const: qcom,adreno-smmu
>             - const: qcom,smmu-v2
> -      - description: Qcom Adreno GPUs on Google Cheza platform
> -        items:
> -          - const: qcom,sdm845-smmu-v2
> -          - const: qcom,smmu-v2
>         - description: Marvell SoCs implementing "arm,mmu-500"
>           items:
>             - const: marvell,ap806-smmu-500
> 


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