drm/bridge: tc358767: add bus flags

[ 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.valkeinen@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 8e28e73..29a7e33 100644 (file)
--- 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;