linux-kernel - Re: [PATCH v2 2/3] media: dt-bindings: venus: Fix iommus property

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Message-ID: <20260116-burrowing-weightless-sawfly-53dc98@quoll>
Date: Fri, 16 Jan 2026 09:47:37 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Sumit Garg <sumit.garg@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, akhilpo@....qualcomm.com, vikash.garodia@....qualcomm.com, 
	dikshita.agarwal@....qualcomm.com, robin.clark@....qualcomm.com, lumag@...nel.org, 
	loic.poulain@....qualcomm.com, jorge.ramirez@....qualcomm.com, linux-kernel@...r.kernel.org, 
	Sumit Garg <sumit.garg@....qualcomm.com>
Subject: Re: [PATCH v2 2/3] media: dt-bindings: venus: Fix iommus property

On Fri, Jan 16, 2026 at 11:50:03AM +0530, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg@....qualcomm.com>
> 
> Fix IOMMU DT propety for venus via dropping SMMU stream IDs which
> relates to secure context bank. Assigning Linux kernel (HLOS) VMID
> to secure context bank stream IDs is incorrect.
> 
> The min value is added for iommus property to ensure in future when

You do not add min value (that would be "minimum") but change the list.

> secure context bank stream IDs are properly supported then the iommus
> property is extensible.
> 
> These DT bindings changes should be backwards compatible.
> 
> Signed-off-by: Sumit Garg <sumit.garg@....qualcomm.com>
> ---
>  .../devicetree/bindings/media/qcom,qcm2290-venus.yaml       | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
> index 3f3ee82fc878..ae6bc0d0bea6 100644
> --- a/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
> +++ b/Documentation/devicetree/bindings/media/qcom,qcm2290-venus.yaml
> @@ -42,6 +42,7 @@ properties:
>        - const: vcodec0_bus
>  
>    iommus:
> +    minItems: 2

Same problem.

>      maxItems: 5

Best regards,
Krzysztof