linux-kernel - Re: [PATCH] arm64: dts: qcom: hamoa-iot-evk: Enable display support

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Message-ID: <ad436d4f-dff2-4063-9b9b-e1218f6dc3c7@kernel.org>
Date: Wed, 23 Jul 2025 08:26:19 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Yongxing Mou <quic_yongmou@...cinc.com>,
 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>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: hamoa-iot-evk: Enable display support

On 23/07/2025 08:14, Yongxing Mou wrote:
> Enable DisplayPort support on all three USB-C ports of the
> hamoa-iot-evk platform.
> 
> Unlike most X1E-based boards, this platform uses FSUSB42 USB
> switches for the USB0 Type-C port, while USB1 and USB2 rely on
> Parade PS8830 retimers for Alt Mode switching.
> 
> Support for the PS8830 retimers was already included in the
> initial DTS, so this change adds support for the FSUSB42 switches.
> 
> Due to limitations in the USB/DP combo PHY driver, DisplayPort
> functionality is limited to 2 lanes instead of the maximum 4,
> consistent with other X1E-based platforms.
> 
> The platform also supports embedded DisplayPort (eDP) by default.
> 
> Signed-off-by: Yongxing Mou <quic_yongmou@...cinc.com>
> ---
> This change made top of initial DTS:
> https://lore.kernel.org/all/20250716-hamoa_initial-v1-0-f6f5d0f9a163@oss.qualcomm.com/
> ---
>  arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 156 +++++++++++++++++++++++++++++
>  1 file changed, 156 insertions(+)

Just squash it there. Why are you posting knowingly incomplete DTS just
to fix it later?

Best regards,
Krzysztof