Hi Niklas,
Thank you for the patch.
On Tuesday, 13 February 2018 01:01:31 EEST Niklas Söderlund wrote:
> Documentation for Renesas R-Car MIPI CSI-2 receiver. The CSI-2 receivers
> are located between the video sources (CSI-2 transmitters) and the video
> grabbers (VIN) on Gen3 of Renesas R-Car SoC.
>
> Each CSI-2 device is connected to more than one VIN device which
> simultaneously can receive video from the same CSI-2 device. Each VIN
> device can also be connected to more than one CSI-2 device. The routing
> of which links are used is controlled by the VIN devices. There are only
> a few possible routes which are set by hardware limitations, which are
> different for each SoC in the Gen3 family.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> Acked-by: Rob Herring <robh@xxxxxxxxxx>
> Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
> .../bindings/media/renesas,rcar-csi2.txt | 99 +++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 100 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt
>
> diff --git a/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt
> b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt new file
> mode 100644
> index 0000000000000000..6f71f997dc48eee9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt
> @@ -0,0 +1,99 @@
> +Renesas R-Car MIPI CSI-2
> +------------------------
> +
> +The R-Car CSI-2 receiver device provides MIPI CSI-2 capabilities for the
> +Renesas R-Car family of devices. It is used in conjunction with the
> +R-Car VIN module, which provides the video capture capabilities.
> +
> +Mandatory properties
> +--------------------
> + - compatible: Must be one or more of the following
> + - "renesas,r8a7795-csi2" for the R8A7795 device.
> + - "renesas,r8a7796-csi2" for the R8A7796 device.
> +
> + - reg: the register base and size for the device registers
> + - interrupts: the interrupt for the device
> + - clocks: reference to the parent clock
> +
> +The device node shall contain two 'port' child nodes according to the
> +bindings defined in Documentation/devicetree/bindings/media/
> +video-interfaces.txt. Port 0 shall connect to the CSI-2 source. Port 1
> +shall connect to all the R-Car VIN modules that have a hardware
> +connection to the CSI-2 receiver.
> +
> +- Port 0 - Video source (mandatory)
> + - Endpoint 0 - sub-node describing the endpoint that is the video source
> +
> +- Port 1 - VIN instances (optional)
> + - One endpoint sub-node for every R-Car VIN instance which is connected
> + to the R-Car CSI-2 receiver.
> +
> +Example:
> +
> + csi20: csi2@fea80000 {
> + compatible = "renesas,r8a7796-csi2";
> + reg = <0 0xfea80000 0 0x10000>;
> + interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&cpg CPG_MOD 714>;
> + power-domains = <&sysc R8A7796_PD_ALWAYS_ON>;
> + resets = <&cpg 714>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <0>;
> +
> + csi20_in: endpoint@0 {
> + reg = <0>;
> + clock-lanes = <0>;
> + data-lanes = <1>;
> + remote-endpoint = <&adv7482_txb>;
> + };
> + };
> +
> + port@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <1>;
> +
> + csi20vin0: endpoint@0 {
> + reg = <0>;
> + remote-endpoint = <&vin0csi20>;
> + };
> + csi20vin1: endpoint@1 {
> + reg = <1>;
> + remote-endpoint = <&vin1csi20>;
> + };
> + csi20vin2: endpoint@2 {
> + reg = <2>;
> + remote-endpoint = <&vin2csi20>;
> + };
> + csi20vin3: endpoint@3 {
> + reg = <3>;
> + remote-endpoint = <&vin3csi20>;
> + };
> + csi20vin4: endpoint@4 {
> + reg = <4>;
> + remote-endpoint = <&vin4csi20>;
> + };
> + csi20vin5: endpoint@5 {
> + reg = <5>;
> + remote-endpoint = <&vin5csi20>;
> + };
> + csi20vin6: endpoint@6 {
> + reg = <6>;
> + remote-endpoint = <&vin6csi20>;
> + };
> + csi20vin7: endpoint@7 {
> + reg = <7>;
> + remote-endpoint = <&vin7csi20>;
> + };
> + };
> + };
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index aee793bff977d413..a0ca030b6bf6b82c 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -8651,6 +8651,7 @@ L: linux-media@xxxxxxxxxxxxxxx
> L: linux-renesas-soc@xxxxxxxxxxxxxxx
> T: git git://linuxtv.org/media_tree.git
> S: Supported
> +F: Documentation/devicetree/bindings/media/renesas,rcar-csi2.txt
> F: Documentation/devicetree/bindings/media/rcar_vin.txt
> F: drivers/media/platform/rcar-vin/
--
Regards,
Laurent Pinchart
