The meaning of this flag may not be obvious at first sight.

Signed-off-by: Luca Ceresoli <[email protected]>
---
 include/drm/bridge/dw_hdmi.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 336f062e1f9d..45f6ba1a8ee1 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -126,6 +126,11 @@ struct dw_hdmi_phy_ops {
 struct dw_hdmi_plat_data {
        struct regmap *regm;
 
+       /*
+        * The HDMI output port number (which must be 1) if it is described
+        * in the device tree. 0 if the device tree does not describe the
+        * next component (legacy mode).
+        */
        unsigned int output_port;
 
        unsigned long input_bus_encoding;

-- 
2.53.0

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