[PATCH 7/7] drm/bridge: lt9211: Enable DSI burst mode for LT9211C

[Philipp Zabel]

From: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>

Enable the MIPI_DSI_MODE_VIDEO_BURST flag to produce stable LVDS output
on RK3576. In non-burst mode, the bridge produces a horizontally
unstable image on this platform.

Tested with: AUO G185HAN01.0 dual-link LVDS panel via LT9211C bridge

Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
---
 drivers/gpu/drm/bridge/lontium-lt9211.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9211.c b/drivers/gpu/drm/bridge/lontium-lt9211.c
index c82f7ee7134c..e34ee288e466 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9211.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9211.c
@@ -1399,7 +1399,8 @@ static int lt9211_host_attach(struct lt9211 *ctx)
 	dsi->format = MIPI_DSI_FMT_RGB888;
 
 	if (ctx->chip_type == LT9211C) {
-		dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM;
+		dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+			MIPI_DSI_MODE_LPM;
 	} else {
 		dsi->mode_flags =
 			MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
-- 
2.47.3