linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7280: Mark FastRPC context banks as dma-coherent

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Message-ID: <tqddtxx25bi6xb5jilpbgfccn7qz4qkonmstfbpz36rl3pnrwt@u4lv2tn46e5z>
Date: Wed, 21 May 2025 00:34:08 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Xilin Wu <sophon@...xa.com>
Cc: cros-qcom-dts-watchers@...omium.org,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, 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
Subject: Re: [PATCH] arm64: dts: qcom: sc7280: Mark FastRPC context banks as
 dma-coherent

On Wed, Apr 16, 2025 at 06:54:18PM +0800, Xilin Wu wrote:
> The FastRPC context banks are DMA-coherent on sc7280 platform. Mark them
> as such.
> 
> This allows LLM inferencing on the CDSP using Qualcomm AI Engine Direct
> SDK on the qcs6490 platform.
> 
> Signed-off-by: Xilin Wu <sophon@...xa.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)

Are context banks coherent on FP5? On Herobrine? Or Nothing Phone?

-- 
With best wishes
Dmitry