linux-kernel - Re: [PATCH v1] arm64: dts: qcom: lemans-evk: Add firmware-name to QUPv3 nodes

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Message-ID: <uudcntpurhydj454jemum43a5wizrg3efbqb6h4co3cvyqvn4g@qighmntbkr5s>
Date: Wed, 24 Sep 2025 22:35:02 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Viken Dadhaniya <viken.dadhaniya@....qualcomm.com>
Cc: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mukesh.savaliya@....qualcomm.com, anup.kulkarni@....qualcomm.com
Subject: Re: [PATCH v1] arm64: dts: qcom: lemans-evk: Add firmware-name to
 QUPv3 nodes

On Wed, Sep 24, 2025 at 09:24:09AM +0530, Viken Dadhaniya wrote:
> Traditionally, firmware loading for Serial Engines (SE) in the QUP hardware
> of Qualcomm SoCs has been managed by TrustZone (TZ). While this approach
> ensures secure SE assignment and access control, it limits flexibility for
> developers who need to enable various protocols on different SEs.
> 
> Add the firmware-name property to QUPv3 nodes in the device tree to enable
> firmware loading from the Linux environment. Handle SE assignments and
> access control permissions directly within Linux, removing the dependency
> on TrustZone.
> 
> Signed-off-by: Viken Dadhaniya <viken.dadhaniya@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/lemans-evk.dts | 3 +++
>  1 file changed, 3 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry