[PATCH RFC v2 1/6] drm/i2c: tda998x: Add the required port property

[Jean-Francois Moine]

According to the media video interface, the video source and sink
ports must be identified by mutual phandles.

This patch adds the 'port' property of the tda998x (sink side).

Signed-off-by: Jean-Francois Moine <moinejf at free.fr>
---
 Documentation/devicetree/bindings/drm/i2c/tda998x.txt | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/drm/i2c/tda998x.txt b/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
index e3f3d65..10c5b5e 100644
--- a/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
+++ b/Documentation/devicetree/bindings/drm/i2c/tda998x.txt
@@ -17,13 +17,22 @@ Optional properties:
   - video-ports: 24 bits value which defines how the video controller
 	output is wired to the TDA998x input - default: <0x230145>
 
+Required nodes:
+  - port: reference of the video source as described in media/video-interfaces
+
 Example:
 
-	tda998x: hdmi-encoder {
+	hdmi: hdmi-encoder {
 		compatible = "nxp,tda19988";
 		reg = <0x70>;
 		interrupt-parent = <&gpio0>;
 		interrupts = <27 2>;		/* falling edge */
 		pinctrl-0 = <&pmx_camera>;
 		pinctrl-names = "default";
+
+		port {
+			hdmi_0: endpoint at 0 {
+				remote-endpoint = <&lcd0_0>;
+			};
+		};
 	};
-- 
1.9.1