Hi Marek, On Wed, 5 Jul 2023 at 01:48, Marek Vasut <marex@xxxxxxx> wrote: > > 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. This patch broke display on Dragonboard 845c (SDM845) devboard running AOSP. This is what I see https://people.linaro.org/~amit.pundir/db845c-userdebug/v6.5-broken-display/PXL_20230704_150156326.jpg. Reverting this patch fixes this regression for me. Regards, Amit Pundir > > Signed-off-by: Marek Vasut <marex@xxxxxxx> > --- > Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx> > Cc: Daniel Vetter <daniel@xxxxxxxx> > Cc: David Airlie <airlied@xxxxxxxxx> > Cc: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> > Cc: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > Cc: Jonas Karlman <jonas@xxxxxxxxx> > Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx> > Cc: Michael Walle <michael@xxxxxxxx> > Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx> > Cc: Robert Foss <rfoss@xxxxxxxxxx> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > --- > drivers/gpu/drm/bridge/lontium-lt9611.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c > index a25d21a7d5c19..151efe92711c4 100644 > --- a/drivers/gpu/drm/bridge/lontium-lt9611.c > +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c > @@ -774,7 +774,9 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611, > dsi->lanes = 4; > 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) { > -- > 2.39.2 >
