4.20-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 4842379cbe6e851de914a7132f76f4e200b9a98b ]
tc358767 driver does not set DRM bus_flags, even if it does configures the polarity settings into its registers. This means that the DPI source can't configure the polarities correctly.
Add sync flags accordingly.
Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Reviewed-by: Andrzej Hajda a.hajda@samsung.com Signed-off-by: Andrzej Hajda a.hajda@samsung.com Link: https://patchwork.freedesktop.org/patch/msgid/20190103115954.12785-2-tomi.va... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/bridge/tc358767.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 8e28e738cb52..29a7e33e8ae0 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1195,6 +1195,10 @@ static int tc_bridge_attach(struct drm_bridge *bridge)
drm_display_info_set_bus_formats(&tc->connector.display_info, &bus_format, 1); + tc->connector.display_info.bus_flags = + DRM_BUS_FLAG_DE_HIGH | + DRM_BUS_FLAG_PIXDATA_NEGEDGE | + DRM_BUS_FLAG_SYNC_NEGEDGE; drm_connector_attach_encoder(&tc->connector, tc->bridge.encoder);
return 0;