Several bindings specifies a "te-gpios" for tearing effect signal.
Add this to panel-common so we have a shared definition.

Signed-off-by: Sam Ravnborg <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Sam Ravnborg <[email protected]>
---
 .../devicetree/bindings/display/panel/panel-common.yaml    | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml 
b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
index dd97907a7450..17b8367f12dd 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
@@ -124,6 +124,13 @@ properties:
       while active. Active high reset signals can be supported by inverting the
       GPIO specifier polarity flag.
 
+  te-gpios:
+    maxItems: 1
+    description:
+      GPIO spec for the tearing effect synchronization signal.
+      The tearing effect signal is active high. Active low signals can be
+      supported by inverting the GPIO specifier polarity flag.
+
   # Power
   power-supply:
     description:
-- 
2.20.1

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