This patch updates a ports node binding for panel.

With this, dp node can have a ports node which describes
a remote endpoint node that can be connected to panel or bridge
node.

Signed-off-by: Inki Dae <inki.dae at samsung.com>
---
 .../bindings/display/exynos/exynos_dp.txt          | 28 ++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt 
b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
index 64693f2..15b52cb 100644
--- a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
+++ b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
@@ -66,8 +66,15 @@ Optional properties for dp-controller:
                Hotplug detect GPIO.
                        Indicates which GPIO should be used for hotplug
                        detection
-       -video interfaces: Device node can contain video interface port
-                           nodes according to [1].
+Video interfaces:
+  Device node can contain video interface port nodes according to [1].
+  The following are properties specific to those nodes:
+
+  endpoint node connected to bridge or panel node:
+   - remote-endpoint: specifies the endpoint in panel or bridge node.
+                     This node is required in all kinds of exynos dp
+                     to represent the connection between dp and bridge
+                     ,or dp and panel.

 [1]: Documentation/devicetree/bindings/media/video-interfaces.txt

@@ -111,9 +118,22 @@ Board Specific portion:
                };

                ports {
-                       port at 0 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       port {
                                dp_out: endpoint {
-                                       remote-endpoint = <&bridge_in>;
+                                       remote-endpoint = <&dp_in>;
+                               };
+                       };
+               };
+
+               panel at 0 {
+                       reg = <0>;
+                       ...
+                       port {
+                               dp_in: endpoint {
+                                       remote-endpoint = <&dp_out>;
                                };
                        };
                };
-- 
1.9.1

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