The current code assume hardcoded dsi host endpoint 1, which may not
be the case. Let's fix that and simplify the code by getting the dsi
endpoint with of_graph_get_remote_endpoint() that does not assume any
endpoint numbering.
Fixes: b26975593b17 ("display/drm/bridge: TC358775 DSI/LVDS driver")
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
drivers/gpu/drm/bridge/tc358775.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -528,25 +528,17 @@ tc_mode_valid(struct drm_bridge *bridge,
static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
{
struct device_node *endpoint;
- struct device_node *parent;
struct device_node *remote;
int dsi_lanes = -1;
- /*
- * To get the data-lanes of dsi, we need to access the dsi0_out of port1
- * of dsi0 endpoint from bridge port0 of d2l_in
- */
endpoint = of_graph_get_endpoint_by_regs(tc->dev->of_node,
TC358775_DSI_IN, -1);
if (endpoint) {
- /* dsi0_out node */
- parent = of_graph_get_remote_port_parent(endpoint);
+ /* Get the configured data lanes on the dsi host side */
+ remote = of_graph_get_remote_endpoint(endpoint);
of_node_put(endpoint);
- if (parent) {
- /* dsi0 port 1 */
- dsi_lanes = drm_of_get_data_lanes_count_ep(parent, 1, -1, 1, 4);
- of_node_put(parent);
- }
+ dsi_lanes = drm_of_get_data_lanes_count(remote, 1, 4);
+ of_node_put(remote);
}
if (dsi_lanes < 0)
--
2.42.1
