On Mon, May 27, 2024 at 10:21:48PM +0800, Jun Nie wrote: > data is valid for only half the active window if widebus > is enabled > > Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > index 225c1c7768ff..f97221423249 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c > @@ -168,6 +168,15 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *intf, > > data_width = p->width; > > + /* > + * If widebus is enabled, data is valid for only half the active window > + * since the data rate is doubled in this mode. But for the compression > + * mode in DP case, the p->width is already adjusted in > + * drm_mode_to_intf_timing_params() Is there any reason for divergence here? > + */ > + if (p->wide_bus_en && !dp_intf) > + data_width = p->width >> 1; > + > hsync_data_start_x = hsync_start_x; > hsync_data_end_x = hsync_start_x + data_width - 1; > > > -- > 2.34.1 > -- With best wishes Dmitry
