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 | 8 ++++++++ 1 file changed, 8 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 2cf1f8c116b5..3d1bc8fa4ca2 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c @@ -167,6 +167,14 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *intf, intf_cfg2 |= INTF_CFG2_DATABUS_WIDEN; 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() + */ + if (p->wide_bus_en && !dp_intf) + data_width = p->width >> 1; /* TODO: handle DSC+DP case, we only handle DSC+DSI case so far */ if (p->compression_en && !dp_intf) -- 2.34.1
