Hi, Jitao: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> 於 2020年8月18日 週二 下午10:45寫道： > > Hi, Jitao: > > Jitao Shi <jitao.shi@xxxxxxxxxxxx> 於 2020年8月18日 週二 上午10:41寫道： > > > > On Tue, 2020-08-18 at 07:42 +0800, Chun-Kuang Hu wrote: > > > Hi, Jitao: > > > > > > Jitao Shi <jitao.shi@xxxxxxxxxxxx> 於 2020年8月17日 週一 下午9:07寫道： > > > > > > > > horizontal_backporch_byte should be hbp * bpp - hbp extra bytes. > > > > So remove the wrong subtraction 10. > > > > > > > > Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx> > > > > --- > > > > drivers/gpu/drm/mediatek/mtk_dsi.c | 9 ++++----- > > > > 1 file changed, 4 insertions(+), 5 deletions(-) > > > > > > > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c > > > > index 270bf22c98fe..5d031e634571 100644 > > > > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c > > > > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c > > > > @@ -473,14 +473,13 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) > > > > horizontal_sync_active_byte = (vm->hsync_len * dsi_tmp_buf_bpp - 10); > > > > > > So this subtraction 10 is correct? > > > > > > Regards, > > > Chun-Kuang. > > > > > > > Yes, It is right. > > > > In the cea861 and dmt spec the mini hsync is 40 pixels. > > So the vm->hsync_len * dsi_tmp_buf_bpp >= 120 > 10 > > > > OK, so > > Reviewed-by: Chun-Kuang Hu <chunkuang.hu@xxxxxxxxxx> > Applied to mediatek-drm-fixes [1], thanks. [1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-fixes Regards, Chun-Kuang. > > Best Regards > > jitao > > > > > > > > if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) > > > > - horizontal_backporch_byte = > > > > - (vm->hback_porch * dsi_tmp_buf_bpp - 10); > > > > + horizontal_backporch_byte = vm->hback_porch * dsi_tmp_buf_bpp; > > > > else > > > > - horizontal_backporch_byte = ((vm->hback_porch + vm->hsync_len) * > > > > - dsi_tmp_buf_bpp - 10); > > > > + horizontal_backporch_byte = (vm->hback_porch + vm->hsync_len) * > > > > + dsi_tmp_buf_bpp; > > > > > > > > data_phy_cycles = timing->lpx + timing->da_hs_prepare + > > > > - timing->da_hs_zero + timing->da_hs_exit + 3; > > > > + timing->da_hs_zero + timing->da_hs_exit; > > > > > > > > if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) { > > > > if ((vm->hfront_porch + vm->hback_porch) * dsi_tmp_buf_bpp > > > > > -- > > > > 2.12.5 > > > > _______________________________________________ > > > > Linux-mediatek mailing list > > > > Linux-mediatek@xxxxxxxxxxxxxxxxxxx > > > > http://lists.infradead.org/mailman/listinfo/linux-mediatek > >
