[PATCH v2 1/2] dt-bindings: adv7180: Introduce 'adv,force-bt656-4' property

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Captured NTSC video would be out of sync when using the adv7280 with
the BT.656-4 protocol. Certain registers (0x04, 0x31, 0xE6) need to
be configured properly to ensure BT.656-4 compatibility.

Introduce the 'adv,force-bt656-4' property to allow the ADV7280
behavior to be consistent with the ADV7180, where BT.656-4 timing
is used by default.

Signed-off-by: Fabio Estevam <festevam@xxxxxxxxx>
---
Changes since v1:
- Remove the part number from the property name (Rob)

 Documentation/devicetree/bindings/media/i2c/adv7180.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/i2c/adv7180.yaml b/Documentation/devicetree/bindings/media/i2c/adv7180.yaml
index bcfd93739b4f..83e47b0c9fa2 100644
--- a/Documentation/devicetree/bindings/media/i2c/adv7180.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/adv7180.yaml
@@ -35,6 +35,11 @@ properties:
   powerdown-gpios:
     maxItems: 1
 
+  adv,force-bt656-4:
+    description:
+      Indicates that the output is a BT.656-4 compatible stream.
+    type: boolean
+
   port:
     $ref: /schemas/graph.yaml#/properties/port
 
-- 
2.25.1



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