drm/bridge: lt9211: Do not generate HFP/HBP/HSA and EOT packet

Do not generate the HS front and back porch gaps, the HSA gap and
EOT packet, as these packets are not required. This makes the bridge
work with Samsung DSIM on i.MX8MM and i.MX8MP.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403221233.500485-1-marex@denx.de

diff --git a/drivers/gpu/drm/bridge/lontium-lt9211.c b/drivers/gpu/drm/bridge/lontium-lt9211.c
index 3e19fff..00db681 100644 (file)
--- a/drivers/gpu/drm/bridge/lontium-lt9211.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9211.c
@@ -709,7 +709,9 @@ static int lt9211_host_attach(struct lt9211 *ctx)
        dsi->lanes = dsi_lanes;
        dsi->format = MIPI_DSI_FMT_RGB888;
        dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
-                         MIPI_DSI_MODE_VIDEO_HSE;
+                         MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO_NO_HSA |
+                         MIPI_DSI_MODE_VIDEO_NO_HFP | MIPI_DSI_MODE_VIDEO_NO_HBP |
+                         MIPI_DSI_MODE_NO_EOT_PACKET;
 
        ret = devm_mipi_dsi_attach(dev, dsi);
        if (ret < 0) {