Re: [PATCH v2] drm/msm/dp: Correct LeMans/Monaco DP phy Swing/Emphasis setting
From: Dmitry Baryshkov
Date: Mon Jan 19 2026 - 07:56:00 EST
On Mon, Jan 19, 2026 at 08:37:20PM +0800, Yongxing Mou wrote:
> Currently, the LeMans/Monaco devices and their derivative platforms
> operate in DP mode rather than eDP mode. Per the PHY HPG, the Swing and
> Emphasis settings need to be corrected to the proper values.
No, they need to be configured dynamically. I wrote earlier that the
driver needs refactoring.
>
> This will help achieve successful link training on some dongles.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 3f12bf16213c ("phy: qcom: edp: Add support for eDP PHY on SA8775P")
> Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
> Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - Separate the LDO change out.[Konrad][Dmitry]
> - Modify the commit message.[Dmitry]
> - Link to v1: https://lore.kernel.org/r/20260109-klm_dpphy-v1-1-a6b6abe382de@xxxxxxxxxxxxxxxx
> ---
> drivers/phy/qualcomm/phy-qcom-edp.c | 23 ++++++++++++++++++++++-
> 1 file changed, 22 insertions(+), 1 deletion(-)
>
--
With best wishes
Dmitry