@@ -1648,7 +1648,8 @@ static int anx7625_get_swing_setting(struct device *dev,
static int anx7625_parse_dt(struct device *dev,
struct anx7625_platform_data *pdata)
{
- struct device_node *np = dev->of_node, *ep0;
+ struct device_node *np = dev->of_node, *ep0, *port_node;
+ unsigned int count;
int bus_type, mipi_lanes;
anx7625_get_swing_setting(dev, pdata);
@@ -1687,6 +1688,15 @@ static int anx7625_parse_dt(struct device *dev,
if (of_property_read_bool(np, "analogix,audio-enable"))
pdata->audio_en = 1;
+ /*
+ * Don't bother finding a panel if a Type-C `mode-switch` property is
+ * present in one of the endpoints in the output port.
+ */
+ port_node = of_graph_get_port_by_id(np, 1);
+ count = typec_mode_switch_node_count(&port_node->fwnode);
+ if (count)
+ return 0;
+
pdata->panel_bridge = devm_drm_of_get_bridge(dev, np, 1, 0);
if (IS_ERR(pdata->panel_bridge)) {
if (PTR_ERR(pdata->panel_bridge) == -ENODEV) {
The output port endpoints can be connected to USB-C connectors. Running drm_of_find_panel_or_bridge() with such endpoints leads to a continuous return value of -EPROBE_DEFER, even though there is no panel present. To avoid this, check for the existence of a "mode-switch" property in the port endpoint, and skip panel registration completely if so. Signed-off-by: Pin-yen Lin <treapking@chromium.org> --- Changes in v13: - Use the new typec_mode_switch_node_count helper Changes in v12: - Updated to use fwnode_for_each_typec_mode_switch macro - Dropped collected tags Changes in v10: - Collected Reviewed-by and Tested-by tags Changes in v6: - New in v6 drivers/gpu/drm/bridge/analogix/anx7625.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)