Document the DT bindings for the CSI2/CCP2 receiver peripheral
(known as Unicam) on BCM283x SoCs.
Signed-off-by: Dave Stevenson <dave.steven...@raspberrypi.org>
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.../devicetree/bindings/media/bcm2835-unicam.txt | 76 ++++++++++++++++++++++
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b/Documentation/devicetree/bindings/media/bcm2835-unicam.txt
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+Broadcom BCM283x Camera Interface (Unicam)
+------------------------------------------
+
+The Unicam block on BCM283x SoCs is the receiver for either
+CSI-2 or CCP2 data from image sensors or similar devices.
+
+Required properties:
+===================
+- compatible : must be "brcm,bcm2835-unicam".
+- reg : physical base address and length of the register sets for the
+ device.
+- interrupts : should contain the IRQ line for this Unicam instance.
+- clocks : list of clock specifiers, corresponding to entries in
+ clock-names property.
+- clock-names : must contain an "lp_clock" entry, matching entries
+ in the clocks property.
+
+Optional properties
+===================
+- max-data-lanes: the hardware can support varying numbers of clock lanes.
+ This value is the maximum number supported by this instance.
+ Known values of 2 or 4. Default is 2.
+
+
+Unicam supports a single port node. It should contain one 'port' child node
+with child 'endpoint' node. Please refer to the bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+ csi1: csi@7e801000 {
+ compatible = "brcm,bcm2835-unicam";
+ reg = <0x7e801000 0x800>,
+ <0x7e802004 0x4>;
+ interrupts = <2 7>;
+ clocks = <&clocks BCM2835_CLOCK_CAM1>;
+ clock-names = "lp_clock";
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ endpoint {
+ remote-endpoint = <&tc358743_0>;
+
+ };
+ };
+ };
+
+ i2c0: i2c@7e205000 {
+
+ tc358743: tc358743@0f {
+ compatible = "toshiba,tc358743";
+ reg = <0x0f>;
+ status = "okay";
+
+ clocks = <&tc358743_clk>;
+ clock-names = "refclk";
+
+ tc358743_clk: bridge-clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <27000000>;
+ };
+
+ port {
+ tc358743_0: endpoint {
+ remote-endpoint = <&csi1>;
+ clock-lanes = <0>;
+ data-lanes = <1 2 3 4>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <297000000>;
+ };
+ };
+ };
+ };
--
2.7.4
