[PATCH v3 1/4] dt-bindings: adv748x: make data-lanes property mandatory for CSI-2 endpoints

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The CSI-2 transmitters can use a different number of lanes to transmit
data. Make the data-lanes mandatory for the endpoints that describe the
transmitters as no good default can be set to fallback on.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>

---
* Changes since v2
- Update paragraph according to Laurents comments.
---
 Documentation/devicetree/bindings/media/i2c/adv748x.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/adv748x.txt b/Documentation/devicetree/bindings/media/i2c/adv748x.txt
index 5dddc95f9cc46084..bffbabc879efd86c 100644
--- a/Documentation/devicetree/bindings/media/i2c/adv748x.txt
+++ b/Documentation/devicetree/bindings/media/i2c/adv748x.txt
@@ -48,7 +48,9 @@ are numbered as follows.
 	  TXA		source		10
 	  TXB		source		11
 
-The digital output port nodes must contain at least one endpoint.
+The digital output port nodes, when present, shall contain at least one
+endpoint. Each of those endpoints shall contain the data-lanes property as
+described in video-interfaces.txt.
 
 Ports are optional if they are not connected to anything at the hardware level.
 
-- 
2.19.1




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