On Sat, 17 Feb 2024 at 01:03, Paloma Arellano <quic_parellan@xxxxxxxxxxx> wrote: > > DP controller can be setup to operate in either SDP update flush mode or > peripheral flush mode based on the DP controller hardware version. > > Starting in DP v1.2, the hardware documents require the use of > peripheral flush mode for SDP packets such as PPS OR VSC SDP packets. > > In-line with this guidance, lets program the DP controller to use > peripheral flush mode starting DP v1.2 > > Changes in v4: > - Clear up that DP_MAINLINK_CTRL_FLUSH_MODE register requires > the use of bits [24:23] > - Modify macros DP_MAINLINK_FLUSH_MODE_UPDATE_SDP and > DP_MAINLINK_FLUSH_MODE_SDP_PERIPH_UPDATE to explicitly set > their values in the bits of DP_MAINLINK_CTRL_FLUSH_MODE_MASK > > Changes in v3: > - Clear up that the DP_MAINLINK_FLUSH_MODE_SDE_PERIPH_UPDATE > macro is setting bits [24:23] to a value of 3 > > Changes in v2: > - Use the original dp_catalog_hw_revision() function to > correctly check the DP HW version > > Signed-off-by: Paloma Arellano <quic_parellan@xxxxxxxxxxx> > --- > drivers/gpu/drm/msm/dp/dp_catalog.c | 17 +++++++++++++++++ > drivers/gpu/drm/msm/dp/dp_catalog.h | 1 + > drivers/gpu/drm/msm/dp/dp_ctrl.c | 1 + > drivers/gpu/drm/msm/dp/dp_reg.h | 6 ++++++ > 4 files changed, 25 insertions(+) Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> -- With best wishes Dmitry
