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

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Message-ID: <aa18a24f-a16a-46a1-a66c-732999acb63e@quicinc.com>
Date: Wed, 23 Jul 2025 16:08:41 +0800
From: Yongxing Mou <quic_yongmou@...cinc.com>
To: Krzysztof Kozlowski <krzk@...nel.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>
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 2025/7/23 14:26, Krzysztof Kozlowski wrote:
> WARNING: This email originated from outside of Qualcomm. Please be wary of any links or attachments, and do not enable macros.
> 
> 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
Hi, sorry, I'm just want to enable display based initial DTS. Should 
this patch merge into the initial DTS?