The LCDC port is the first in the list of the output ports in MDP4.
Mention this explicitly in the driver.
Signed-off-by: Archit Taneja <architt@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
index f8e0cea..cd129f4 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
@@ -263,9 +263,13 @@ static struct device_node *mdp4_detect_lcdc_panel(struct drm_device *dev)
struct device_node *endpoint, *panel_node;
struct device_node *np = dev->dev->of_node;
- endpoint = of_graph_get_next_endpoint(np, NULL);
+ /*
+ * LCDC/LVDS is the first port described in the list of ports in the
+ * MDP4 DT node.
+ */
+ endpoint = of_graph_get_endpoint_by_regs(np, 0, -1);
if (!endpoint) {
- DBG("no endpoint in MDP4 to fetch LVDS panel\n");
+ DBG("no LVDS panel remote endpoint\n");
return NULL;
}
--
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