linux-kernel - Re: [PATCH v3] arm64: dts: qcom: hamoa-iot-evk: Add backlight support for eDP panel

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Message-ID: <iwttmudtkcyzdgudxdwqlf7pcahbzsosvdmrkn7qngf3hp3mm3@bcrpmotsojqs>
Date: Fri, 14 Nov 2025 05:28:56 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yongxing Mou <yongxing.mou@....qualcomm.com>
Cc: 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,
        Abel Vesa <abel.vesa@...aro.org>
Subject: Re: [PATCH v3] arm64: dts: qcom: hamoa-iot-evk: Add backlight
 support for eDP panel

On Wed, Nov 12, 2025 at 12:21:23PM +0800, Yongxing Mou wrote:
> The backlight on the Hamoa IoT EVK is controlled through a PWM signal.
> Aligned with other x1e80100-based platforms: the PWM signal is controlled
> by PMK8550, and the backlight enable signal is handled by PMC8380.
> 
> Describe the backlight device and connect it to the eDP panel to allow
> for brightness control.
> 
> Reviewed-by: Abel Vesa <abel.vesa@...aro.org>
> Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
> ---
> Changes in v3:
> - Optimize the description of the commit message. [Konrad]
> - Drop empty line. [Abel]
> - Link to v2: https://lore.kernel.org/r/20251106-hamoa_dvt_backlight-v2-1-9f844c8f8110@oss.qualcomm.com
> 
> Changes in v2:
> - Add hamoa-iot-evk to the commit subject. [Konrad]
> - Correct the property order in the vreg_edp_bl node. [Konrad]
> - Link to v1: https://lore.kernel.org/r/20251028-hamoa_dvt_backlight-v1-1-97ecb8d0ad01@oss.qualcomm.com
> ---
>  arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 54 ++++++++++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
> 

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


-- 
With best wishes
Dmitry