linux-kernel - Re: [PATCH 0/4] arm64: dts: qcom: x1e80100: Add IRIS video codec

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Message-ID: <6a7bc6b1-7eb6-40a4-82bf-c547b4c07b51@quicinc.com>
Date: Thu, 11 Sep 2025 12:02:54 -0700
From: Trilok Soni <quic_tsoni@...cinc.com>
To: Stephan Gerhold <stephan.gerhold@...aro.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Dikshita
 Agarwal" <dikshita.agarwal@....qualcomm.com>,
        Vikash Garodia
	<vikash.garodia@....qualcomm.com>,
        Bryan O'Donoghue
	<bryan.odonoghue@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH 0/4] arm64: dts: qcom: x1e80100: Add IRIS video codec

On 9/11/2025 11:38 AM, Stephan Gerhold wrote:
> Add the necessary definitions to enable the IRIS video codec for
> accelerated video decoding on the X1E CRD and Lenovo ThinkPad T14s. The
> additions are largely copied as-is from sm8550.dtsi with some minor changes
> necessary for X1E.
> 
> The PAS interface used to boot the IRIS firmware is not functional in EL2.

Just to confirm my understanding of above statement. The patches below
works w/ the Gunyah and Linux running at NS-EL1 and "not functional in
EL2" means Video working w/ the KVM Hypervisor on X1E right? 

> The code to start it without using PAS exists already in the Venus driver,
> but was not ported over to IRIS yet. Discussions how to model the
> video-firmware IOMMU are still ongoing, so disable IRIS in x1-el2.dtso for
> now to avoid regressions when running in EL2.
> 
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>
> ---
> Stephan Gerhold (4):
>       arm64: dts: qcom: x1e80100: Add IRIS video codec
>       arm64: dts: qcom: x1-el2: Disable IRIS for now
>       arm64: dts: qcom: x1e80100-crd: Enable IRIS video codec
>       arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: Enable IRIS
> 
>  arch/arm64/boot/dts/qcom/x1-el2.dtso               |  5 ++
>  .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi    |  5 ++
>  arch/arm64/boot/dts/qcom/x1e80100-crd.dts          |  4 +
>  arch/arm64/boot/dts/qcom/x1e80100.dtsi             | 87 ++++++++++++++++++++++
>  4 files changed, 101 insertions(+)
> ---
> base-commit: 8f21d9da46702c4d6951ba60ca8a05f42870fe8f
> change-id: 20250909-x1e-iris-dt-eb0494a130ca
> 
> Best regards,


-- 
---Trilok Soni