linux-kernel - Re: [PATCH v4 3/3] arm64: dts: qcom: lemans-evk-camera: Add DT overlay

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Message-ID: <u437qomhok4yg6pef4xttd3a6zibuybzaeys33gxu5frbyp2kp@mgmym6c5dr72>
Date: Wed, 10 Sep 2025 18:23:22 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Wenmeng Liu <quic_wenmliu@...lcomm.com>
Cc: Loic Poulain <loic.poulain@....qualcomm.com>,
        Robert Foss <rfoss@...nel.org>, Andi Shyti <andi.shyti@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, todor.too@...il.com,
        bryan.odonoghue@...aro.org, vladimir.zapolskiy@...aro.org,
        linux-i2c@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v4 3/3] arm64: dts: qcom: lemans-evk-camera: Add DT
 overlay

On Wed, Sep 10, 2025 at 07:06:23PM +0800, Wenmeng Liu wrote:
> Enable IMX577 via CCI1 on LeMans EVK Core Kit.

Is it a part of the Core Kit? Is it a part of some kind of mezzanine
board? Why is it being enabled as an overlay instead of being a part of
lemans-evk.dts?

> 
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Signed-off-by: Wenmeng Liu <quic_wenmliu@...lcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/Makefile               |   4 +
>  arch/arm64/boot/dts/qcom/lemans-evk-camera.dtso | 101 ++++++++++++++++++++++++
>  2 files changed, 105 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 0a7c308dec365263bbb7aa5f5cd306dbeacfd3f1..b27f60fbd527146027eebd4bb7b1f8a0a82b3af2 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -30,6 +30,10 @@ dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp449.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp453.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-rdp454.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk.dtb
> +
> +lemans-evk-camera-dtbs	:= lemans-evk.dtb lemans-evk-camera.dtbo
> +
> +dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-camera.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8216-samsung-fortuna3g.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-acer-a1-724.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-alcatel-idol347.dtb
> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-camera.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-camera.dtso
> new file mode 100644
> index 0000000000000000000000000000000000000000..629992ced9b13b23505fc20562929a0ed17a9566
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/lemans-evk-camera.dtso
> @@ -0,0 +1,101 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2024-2025 Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +/*
> + * Camera Sensor overlay on top of LeMans EVK Core Kit.

This is pretty obvious from the file itself.

> + */
> +
> +/dts-v1/;
> +/plugin/;
> +

-- 
With best wishes
Dmitry