[RFC 3/3] dt: bindings: Add a binding for referencing EEPROM from camera sensors

[Sakari Ailus <sakari.ailus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>]

Many camera sensor devices contain EEPROM chips that describe the
properties of a given unit --- the data is specific to a given unit can
thus is not stored e.g. in user space or the driver.

Some sensors embed the EEPROM chip and it can be accessed through the
sensor's I²C interface. This property is to be used for devices where the
EEPROM chip is accessed through a different I²C address than the sensor.

The intent is to later provide this information to the user space.

Signed-off-by: Sakari Ailus <sakari.ailus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
 Documentation/devicetree/bindings/media/video-interfaces.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt
index e52aefc..9bd2005 100644
--- a/Documentation/devicetree/bindings/media/video-interfaces.txt
+++ b/Documentation/devicetree/bindings/media/video-interfaces.txt
@@ -80,6 +80,9 @@ Optional properties
 - lens-focus: A phandle to the node of the lens. Only valid for device
   nodes that are related to an image sensor.
 
+- eeprom: A phandle to the node of the related EEPROM. Only valid for
+  device nodes that are related to an image sensor.
+
 
 Optional endpoint properties
 ----------------------------
-- 
2.7.4

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