4k requires two dsi pipes, so don't report MODE_OK when only a
single pipe is configured. But rather report MODE_PANEL to
signal that requirements of the panel are not being met.
Reported-by: Peter Collingbourne <pcc@xxxxxxxxxx>
Suggested-by: Peter Collingbourne <pcc@xxxxxxxxxx>
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
Tested-by: John Stultz <john.stultz@xxxxxxxxxx>
Tested-by: Anibal Limon <anibal.limon@xxxxxxxxxx>
Acked-By: Vinod Koul <vkoul@xxxxxxxxxx>
Tested-by: Peter Collingbourne <pcc@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index d734d9402c35..e8eb8deb444b 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -867,8 +867,14 @@ static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_mode *mode)
{
struct lt9611_mode *lt9611_mode = lt9611_find_mode(mode);
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
- return lt9611_mode ? MODE_OK : MODE_BAD;
+ if (!lt9611_mode)
+ return MODE_BAD;
+ else if (lt9611_mode->intfs > 1 && !lt9611->dsi1)
+ return MODE_PANEL;
+ else
+ return MODE_OK;
}
static void lt9611_bridge_pre_enable(struct drm_bridge *bridge)
--
2.27.0
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