linux-kernel - Re: [PATCH v2 1/3] dt-bindings: media: ov772x: Document endpoint properties

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Date:   Sat, 15 Aug 2020 11:34:33 +0100
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Jacopo Mondi <jacopo@...ndi.org>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        linux-media <linux-media@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Biju Das <biju.das.jz@...renesas.com>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 1/3] dt-bindings: media: ov772x: Document endpoint properties

Hi Jacopo,

On Mon, Aug 3, 2020 at 12:39 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@...renesas.com> wrote:
>
> Document endpoint properties required for parallel interface
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
>  .../devicetree/bindings/media/i2c/ov772x.txt     | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
I see you already have a patch for YAML conversion for OV772x binding
[1], if you plan to post a v2 would you be OK to pick these changes as
part of your conversion changes ?

[1] https://www.spinics.net/lists/linux-media/msg173201.html

Cheers,
Prabhakar

> diff --git a/Documentation/devicetree/bindings/media/i2c/ov772x.txt b/Documentation/devicetree/bindings/media/i2c/ov772x.txt
> index 0b3ede5b8e6a..1f4153484717 100644
> --- a/Documentation/devicetree/bindings/media/i2c/ov772x.txt
> +++ b/Documentation/devicetree/bindings/media/i2c/ov772x.txt
> @@ -21,6 +21,22 @@ subnode for its digital output video port, in accordance with the video
>  interface bindings defined in Documentation/devicetree/bindings/media/
>  video-interfaces.txt.
>
> +Endpoint node required properties for parallel connection are:
> +- remote-endpoint: a phandle to the bus receiver's endpoint node.
> +- bus-width: shall be set to <8> for 8 bits parallel bus
> +            or <10> for 10 bits parallel bus
> +- data-shift: shall be set to <2> for 8 bits parallel bus
> +             (lines 9:2 are used) or <0> for 10 bits parallel bus
> +- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
> +               (Not required for bus-type equal 6)
> +- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
> +               (Not required for bus-type equal 6)
> +- pclk-sample: sample data on rising (1) or falling (0) edge of the pixel clock
> +              signal. (Not required for bus-type equal 6)
> +- bus-type: data bus type. Possible values are:
> +           5 - Parallel
> +           6 - Bt.656
> +
>  Example:
>
>  &i2c0 {
> --
> 2.17.1
>