This patch documents following updates of the Exynos4 SoC camera subsystem
devicetree binding:

 - addition of #clock-cells and clock-output-names properties to 'camera'
   node - these are now needed so the image sensor sub-devices can reference
clocks provided by the camera host interface,
 - dropped a note about required clock-frequency properties at the
   image sensor nodes; the sensor devices can now control their clock
   explicitly through the clk API and there is no need to require this
   property in the camera host interface binding.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
---
Resending only single patch which changed.

Changes since v6:
 - #clock-cells, clock-output-names documented as mandatory properties;
 - renamed "cam_mclk_{a,b}" to "cam_{a,b}_clkout in the example dts,
   this now matches changes in exynos4.dtsi further in the patch series;
 - marked "samsung,camclk-out" property as deprecated.

Changes since v5:
 - none.

Changes since v4:
 - dropped a requirement of specific order of values in clocks/
   clock-names properties (Mark) and reference to clock-names in
   clock-output-names property description (Mark).
---
 .../devicetree/bindings/media/samsung-fimc.txt     |   46
+++++++++++++------- 1 file changed, 31 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/samsung-fimc.txt

b/Documentation/devicetree/bindings/media/samsung-fimc.txt index
96312f6..1908a5f 100644

--- a/Documentation/devicetree/bindings/media/samsung-fimc.txt
+++ b/Documentation/devicetree/bindings/media/samsung-fimc.txt

 Image sensor nodes
 ------------------

@@ -97,8 +108,8 @@ Image sensor nodes
 The sensor device nodes should be added to their control bus controller

(e.g. I2C0) nodes and linked to a port node in the csis or the
parallel-ports node, using the common video interfaces bindings, defined in
video-interfaces.txt.
-The implementation of this bindings requires clock-frequency property to be
-present in the sensor device nodes.
+An optional clock-frequency property needs to be present in the sensor
device
+nodes. Default value when this property is not present is 24 MHz.