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

Dmitry Baryshkov dmitry.baryshkov at oss.qualcomm.com
Fri Jan 9 07:27:05 PST 2026


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?

> 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

> 
> Signed-off-by: Yongxing Mou <yongxing.mou at oss.qualcomm.com>

Missing Fixes, cc:stable

> ---
>  drivers/phy/qualcomm/phy-qcom-edp.c | 27 ++++++++++++++++++++++++---
>  1 file changed, 24 insertions(+), 3 deletions(-)
> 

-- 
With best wishes
Dmitry



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