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....@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;
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
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
