Hi Lubomir,
On Sun, May 05, 2019 at 04:00:22PM +0200, Lubomir Rintel wrote:
> Add Marvell MMP2 camera host interface.
>
> Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
>
> ---
> Changes since v4:
> - s/Nust/Must/
> - Documented required endpoint properties; bus-type, hsync-active,
> vsync-active and pclk-sample.
>
> Changes since v3:
> - Dropped the video-interfaces.txt reference
> - Clarify "clocks", "clock-names" and "clock-output-names" descriptions
> - Refer to other documentation by full path
>
> Changes since v2:
> - Added #clock-cells, clock-names, port
>
> .../bindings/media/marvell,mmp2-ccic.txt | 50 +++++++++++++++++++
> 1 file changed, 50 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
>
> diff --git a/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt b/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
> new file mode 100644
> index 0000000000000..7ec2c8c8a3b98
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
> @@ -0,0 +1,50 @@
> +Marvell MMP2 camera host interface
> +
> +Required properties:
> + - compatible: Should be "marvell,mmp2-ccic".
> + - reg: Register base and size.
> + - interrupts: The interrupt number.
> + - #clock-cells: Must be 0.
> +
> +Optional properties:
> + - clocks: Reference to the input clock as specified by
> + Documentation/devicetree/bindings/clock/clock-bindings.txt.
> + - clock-names: Names of the clocks used; "axi" for the AXI bus interface,
> + "func" for the peripheral clock and "phy" for the parallel
> + video bus interface.
> + - clock-output-names: Optional clock source for sensors. Shall be "mclk".
> +
> +Required subnodes:
> + - port: The parallel bus interface port with a single endpoint linked to
> + the sensor's endpoint as described in
> + Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +Required endpoint properties:
> + - bus-type: data bus type, <5> or <6> for Parallel or Bt.656 respectively
> + - pclk-sample: pixel clock polarity
> + - hsync-active: horizontal synchronization polarity (only required for
> + parallel bus)
> + - vsync-active: vertical synchronization polarity (only required for
> + parallel bus)
Minor nit: if you don't want to specify what maps to 0/1 in the
properties, could you add "as defined in video-interfaces.txt" after
each property?
Reviewed-by: Jacopo Mondi <jacopo@xxxxxxxxxx>
Thanks
j
> +
> +Example:
> +
> + camera0: camera@d420a000 {
> + compatible = "marvell,mmp2-ccic";
> + reg = <0xd420a000 0x800>;
> + interrupts = <42>;
> + clocks = <&soc_clocks MMP2_CLK_CCIC0>;
> + clock-names = "axi";
> + #clock-cells = <0>;
> + clock-output-names = "mclk";
> +
> + port {
> + camera0_0: endpoint {
> + remote-endpoint = <&ov7670_0>;
> + bus-type = <5>; /* Parallel */
> + hsync-active = <1>; /* Active high */
> + vsync-active = <1>; /* Active high */
> + pclk-sample = <0>; /* Falling */
> + };
> + };
> + };
> --
> 2.21.0
>
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