linux-kernel - Re: [PATCH] drm/msm/dp: Correct LeMans/Monaco DP phy Swing/Emphasis setting

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Message-ID: <c842b3f7-9f6c-487a-a119-90ce4e566681@oss.qualcomm.com>
Date: Tue, 13 Jan 2026 20:05:21 +0800
From: Yongxing Mou <yongxing.mou@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Vinod Koul <vkoul@...nel.org>, Neil Armstrong
 <neil.armstrong@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/msm/dp: Correct LeMans/Monaco DP phy Swing/Emphasis
 setting



On 1/9/2026 11:27 PM, Dmitry Baryshkov wrote:
> On Fri, Jan 09, 2026 at 04:30:21PM +0800, Yongxing Mou wrote:
>> Currently, the LeMans/Monaco DP PHY operates in DP mode rather than eDP
>> mode. Per the PHY HPG, the Swing and Emphasis settings have been corrected
> 
> have been corrected... when?
> 
sorry, will correct it next patch.>> to the appropriate DP-mode values.
>>
>> Additionally, the HPG specifies that the LDO value should be set to 0 when
>> in DP mode. These misconfigurations can lead to link training failures on
>> certain dongles.
> 
> Separate commit
> 
Got it. will update next patch>>
>> Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
> 
> Missing Fixes, cc:stable
> 
Ack.>> ---
>>   drivers/phy/qualcomm/phy-qcom-edp.c | 27 ++++++++++++++++++++++++---
>>   1 file changed, 24 insertions(+), 3 deletions(-)
>>
>