drm_of_get_data_lanes_count_ep
dsi_lanes = drm_of_get_data_lanes_count_ep(dev->of_node, 0, 0, 1, 4);
data_lanes = drm_of_get_data_lanes_count_ep(dev->of_node, 0, -1, 1, 4);
EXPORT_SYMBOL_GPL(drm_of_get_data_lanes_count_ep);
cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES);
ret = drm_of_get_data_lanes_count_ep(dsi->dev->of_node, 1, 0, 1, 4);
ret = drm_of_get_data_lanes_count_ep(dsi->dev->of_node, 1, 0, 1, 4);
int drm_of_get_data_lanes_count_ep(const struct device_node *port,