On Wed, Aug 20, 2025 at 05:34:56PM +0800, Xiangxu Yin wrote: > Since max_dp_lanes and max_dp_link_rate are link-specific parameters, > move their parsing from dp_panel to dp_link for better separation > of concerns. > > Add lane mapping configuration for the DisplayPort (DP) controller on > the QCS615 platform.
Separate patch > > QCS615 platform requires non-default logical-to-physical lane mapping > due to its unique hardware routing. Unlike the standard mapping sequence > <0 1 2 3>, QCS615 uses <3 2 0 1>, which necessitates explicit > configuration via the data-lanes property in the device tree. This > ensures correct signal routing between the DP controller and PHY. > > The DP PHY supports polarity inversion (PN swap) but does not support > lane swapping. Therefore, lane mapping should be handled in the DP > controller domain using REG_DP_LOGICAL2PHYSICAL_LANE_MAPPING. > > Signed-off-by: Xiangxu Yin <xiangxu....@oss.qualcomm.com> > --- > drivers/gpu/drm/msm/dp/dp_ctrl.c | 10 ++--- > drivers/gpu/drm/msm/dp/dp_link.c | 71 +++++++++++++++++++++++++++++++++++ > drivers/gpu/drm/msm/dp/dp_link.h | 5 +++ > drivers/gpu/drm/msm/dp/dp_panel.c | 78 > +++++---------------------------------- > drivers/gpu/drm/msm/dp/dp_panel.h | 3 -- > 5 files changed, 90 insertions(+), 77 deletions(-) > -- With best wishes Dmitry
