On Fri, Jan 12, 2018 at 06:56:47PM +0100, Jacopo Mondi wrote:
> Describe newly introduced OF properties for ov7670 image sensor.
> The driver supports two standard properties to configure synchronism
> signals polarities and one custom property already supported as
> platform data options by the driver to suppress pixel clock during
> horizontal blanking.
>
> Re-phrase child nodes description while at there.
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/media/i2c/ov7670.txt | 18 ++++++++++++++++--
> 1 file changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/ov7670.txt b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
> index 826b656..7c89ea5 100644
> --- a/Documentation/devicetree/bindings/media/i2c/ov7670.txt
> +++ b/Documentation/devicetree/bindings/media/i2c/ov7670.txt
> @@ -9,14 +9,23 @@ Required Properties:
> - clocks: reference to the xclk input clock.
> - clock-names: should be "xclk".
>
> +Required Endpoint Properties:
> +- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
> + Default is active high.
> +- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
> + Default is active high.
If the properties are required, you'll have no default value for them.
Other than that, looks good to me.
> +
> Optional Properties:
> - reset-gpios: reference to the GPIO connected to the resetb pin, if any.
> Active is low.
> - powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
> Active is high.
> +- ov7670,pclk-hb-disable: a boolean property to suppress pixel clock output
> + signal during horizontal blankings.
>
> -The device node must contain one 'port' child node for its digital output
> -video port, in accordance with the video interface bindings defined in
> +The device node must contain one 'port' child node with one 'endpoint' child
> +sub-node for its digital output video port, in accordance with the video
> +interface bindings defined in:
> Documentation/devicetree/bindings/media/video-interfaces.txt.
>
> Example:
> @@ -34,8 +43,13 @@ Example:
> assigned-clocks = <&pck0>;
> assigned-clock-rates = <25000000>;
>
> + ov7670,pclk-hb-disable;
> +
> port {
> ov7670_0: endpoint {
> + hsync-active = <0>;
> + vsync-active = <0>;
> +
> remote-endpoint = <&isi_0>;
> };
> };
> --
> 2.7.4
>
--
Sakari Ailus
e-mail: sakari.ailus@xxxxxx
