media: adv748x: Add adv7481, adv7482 bindings

Create device tree bindings documentation for the ADV748x.
The ADV748x supports both the ADV7481 and ADV7482 chips which
provide analogue decoding and HDMI receiving capabilities

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/i2c/adv748x.txt b/Documentation/devicetree/bindings/media/i2c/adv748x.txt
new file mode 100644 (file)
index 0000000..21ffb5e
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+++ b/Documentation/devicetree/bindings/media/i2c/adv748x.txt
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+* Analog Devices ADV748X video decoder with HDMI receiver
+
+The ADV7481 and ADV7482 are multi format video decoders with an integrated
+HDMI receiver. They can output CSI-2 on two independent outputs TXA and TXB
+from three input sources HDMI, analog and TTL.
+
+Required Properties:
+
+  - compatible: Must contain one of the following
+    - "adi,adv7481" for the ADV7481
+    - "adi,adv7482" for the ADV7482
+
+  - reg: I2C slave address
+
+Optional Properties:
+
+  - interrupt-names: Should specify the interrupts as "intrq1", "intrq2" and/or
+                    "intrq3". All interrupts are optional. The "intrq3" interrupt
+                    is only available on the adv7481
+  - interrupts: Specify the interrupt lines for the ADV748x
+
+The device node must contain one 'port' child node per device input and output
+port, in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt. The port nodes
+are numbered as follows.
+
+         Name          Type            Port
+       ---------------------------------------
+         AIN0          sink            0
+         AIN1          sink            1
+         AIN2          sink            2
+         AIN3          sink            3
+         AIN4          sink            4
+         AIN5          sink            5
+         AIN6          sink            6
+         AIN7          sink            7
+         HDMI          sink            8
+         TTL           sink            9
+         TXA           source          10
+         TXB           source          11
+
+The digital output port nodes must contain at least one endpoint.
+
+Ports are optional if they are not connected to anything at the hardware level.
+
+Example:
+
+       video-receiver@70 {
+               compatible = "adi,adv7482";
+               reg = <0x70>;
+
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               interrupt-parent = <&gpio6>;
+               interrupt-names = "intrq1", "intrq2";
+               interrupts = <30 IRQ_TYPE_LEVEL_LOW>,
+                            <31 IRQ_TYPE_LEVEL_LOW>;
+
+               port@7 {
+                       reg = <7>;
+
+                       adv7482_ain7: endpoint {
+                               remote-endpoint = <&cvbs_in>;
+                       };
+               };
+
+               port@8 {
+                       reg = <8>;
+
+                       adv7482_hdmi: endpoint {
+                               remote-endpoint = <&hdmi_in>;
+                       };
+               };
+
+               port@10 {
+                       reg = <10>;
+
+                       adv7482_txa: endpoint {
+                               clock-lanes = <0>;
+                               data-lanes = <1 2 3 4>;
+                               remote-endpoint = <&csi40_in>;
+                       };
+               };
+
+               port@11 {
+                       reg = <11>;
+
+                       adv7482_txb: endpoint {
+                               clock-lanes = <0>;
+                               data-lanes = <1>;
+                               remote-endpoint = <&csi20_in>;
+                       };
+               };
+       };