linux-kernel - Re: [PATCH v4 01/12] dt-bindings: remoteproc: qcom,pas: Add iommus property

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Message-ID: <ce03d7e7-9342-465b-881b-50aad29fd9d1@kernel.org>
Date: Wed, 8 Oct 2025 17:09:32 +0900
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Mukesh Ojha <mukesh.ojha@....qualcomm.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Manivannan Sadhasivam <mani@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH v4 01/12] dt-bindings: remoteproc: qcom,pas: Add iommus
 property

On 08/10/2025 01:48, Mukesh Ojha wrote:
> Most Qualcomm platforms feature Gunyah hypervisor which handles IOMMU
> configuration for remote processor and when it is not present, the
> operating system must perform these configurations instead and for that
> firmware stream should be presented to the operating system. Hence, add
> iommus property as optional property for PAS supported devices.
> 
> Acked-by: Rob Herring (Arm) <robh@...nel.org>
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Signed-off-by: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
> ---
>  Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> index 63a82e7a8bf8..8bd7d718be57 100644
> --- a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> @@ -44,6 +44,9 @@ properties:
>        - const: stop-ack
>        - const: shutdown-ack
>  
> +  iommus:
> +    minItems: 1


Incorrect constraints, this must be maxItems instead.


Best regards,
Krzysztof