[media] Add DT binding documentation for Samsung S5K5BAF camera sensor

This patch adds the DT bindings documentation for Samsung S5K5BAF
Image Sensor.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt b/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt
new file mode 100644 (file)
index 0000000..1f51e04
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+++ b/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt
@@ -0,0 +1,58 @@
+Samsung S5K5BAF UXGA 1/5" 2M CMOS Image Sensor with embedded SoC ISP
+--------------------------------------------------------------------
+
+Required properties:
+
+- compatible     : "samsung,s5k5baf";
+- reg            : I2C slave address of the sensor;
+- vdda-supply    : analog power supply 2.8V (2.6V to 3.0V);
+- vddreg-supply          : regulator input power supply 1.8V (1.7V to 1.9V)
+                   or 2.8V (2.6V to 3.0);
+- vddio-supply   : I/O power supply 1.8V (1.65V to 1.95V)
+                   or 2.8V (2.5V to 3.1V);
+- stbyn-gpios    : GPIO connected to STDBYN pin;
+- rstn-gpios     : GPIO connected to RSTN pin;
+- clocks         : list of phandle and clock specifier pairs
+                   according to common clock bindings for the
+                   clocks described in clock-names;
+- clock-names    : should include "mclk" for the sensor's master clock;
+
+Optional properties:
+
+- clock-frequency : the frequency at which the "mclk" clock should be
+                   configured to operate, in Hz; if this property is not
+                   specified default 24 MHz value will be used.
+
+The device node should contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in Documentation/devicetree/bindings/
+media/video-interfaces.txt. The following are properties specific to those
+nodes.
+
+endpoint node
+-------------
+
+- data-lanes : (optional) specifies MIPI CSI-2 data lanes as covered in
+              video-interfaces.txt. If present it should be <1> - the device
+              supports only one data lane without re-mapping.
+
+Example:
+
+s5k5bafx@2d {
+       compatible = "samsung,s5k5baf";
+       reg = <0x2d>;
+       vdda-supply = <&cam_io_en_reg>;
+       vddreg-supply = <&vt_core_15v_reg>;
+       vddio-supply = <&vtcam_reg>;
+       stbyn-gpios = <&gpl2 0 1>;
+       rstn-gpios = <&gpl2 1 1>;
+       clock-names = "mclk";
+       clocks = <&clock_cam 0>;
+       clock-frequency = <24000000>;
+
+       port {
+               s5k5bafx_ep: endpoint {
+                       remote-endpoint = <&csis1_ep>;
+                       data-lanes = <1>;
+               };
+       };
+};