linux-kernel - Re: [PATCH RFC v2 0/3] arm64: dts: qcom: sm8750: Add Iris VPU v3.5

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Message-ID: <bs4bgbyrph4xwsianzvkonpmi72muihob2yaip3gz4yhlqon2s@uvbwrhlr2xlr>
Date: Mon, 11 Aug 2025 11:15:39 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org, 
	Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH RFC v2 0/3] arm64: dts: qcom: sm8750: Add Iris VPU v3.5

On Wed, Aug 06, 2025 at 09:40:29AM -0500, Rob Herring (Arm) wrote:
> On Wed, 06 Aug 2025 14:38:29 +0200, Krzysztof Kozlowski wrote:
[..]
> arch/arm64/boot/dts/qcom/sm8750-qrd.dtb: /soc@...ideo-codec@...0000: failed to match any schema with compatible: ['qcom,sm8750-iris']
> arch/arm64/boot/dts/qcom/sm8750-qrd.dtb: clock-controller@...0000 (qcom,sm8750-videocc): 'required-opps' is a required property
> 	from schema $id: http://devicetree.org/schemas/clock/qcom,sm8450-videocc.yaml#

Can anyone help me understand why required-opps is a required property
in the videocc binding?

Is there a valid level below "low_svs" that is otherwise selected, but
insufficient to keep the clock controller ticking?

Regards,
Bjorn