Hi, Jitao:
Jitao Shi jitao.shi@mediatek.com 於 2021年1月7日 週四 下午10:34寫道：
SoC will transmit the EoTp (End of Transmission packet) when MIPI_DSI_MODE_EOT_PACKET flag is set.
Enabling EoTp will make the line time larger, so the hfp and hbp should be reduced to keep line time.
Signed-off-by: Jitao Shi jitao.shi@mediatek.com
drivers/gpu/drm/mediatek/mtk_dsi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index 65fd99c528af..8c70ec39bfe1 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -401,8 +401,11 @@ static void mtk_dsi_rxtx_control(struct mtk_dsi *dsi) break; }
tmp_reg |= (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) << 6;tmp_reg |= (dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET) >> 3;
if (dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)tmp_reg |= HSTX_CKLP_EN;if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))tmp_reg |= DIS_EOT;
This part is not related to line time, so separate this part to another patch.
Regards, Chun-Kuang.
writel(tmp_reg, dsi->regs + DSI_TXRX_CTRL);} @@ -478,6 +481,7 @@ static void mtk_dsi_config_vdo_timing(struct mtk_dsi *dsi) timing->da_hs_zero + timing->da_hs_exit + 3;
delta = dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST ? 18 : 12;
delta += dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET ? 2 : 0; horizontal_frontporch_byte = vm->hfront_porch * dsi_tmp_buf_bpp; horizontal_front_back_byte = horizontal_frontporch_byte + horizontal_backporch_byte;-- 2.25.1 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek