linux-kernel - Re: [PATCH 4/6] dt-bindings: display: bridge: Add ICN6211 MIPI-DSI to RGB convertor bridge

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Date:   Fri, 15 Mar 2019 14:34:14 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Chen-Yu Tsai <wens@...e.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...glegroups.com, linux-amarula@...rulasolutions.com
Subject: Re: [PATCH 4/6] dt-bindings: display: bridge: Add ICN6211 MIPI-DSI
 to RGB convertor bridge

On Fri, Mar 15, 2019 at 06:38:23PM +0530, Jagan Teki wrote:
> ICN6211 is MIPI-DSI/RGB converter bridge from chipone.
> It has a flexible configuration of MIPI DSI signal input
> and produce RGB565, RGB666, RGB888 output format.
> 
> Add dt-bingings for it.
> 
> Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
> ---
>  .../display/bridge/chipone,icn6211.txt        | 36 +++++++++++++++++++
>  1 file changed, 36 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/chipone,icn6211.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.txt b/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.txt
> new file mode 100644
> index 000000000000..7f13efd7ee7f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/chipone,icn6211.txt
> @@ -0,0 +1,36 @@
> +Chipone ICN6211 MIPI-DSI to RGB Convertor Bridge
> +
> +ICN6211 is MIPI-DSI/RGB converter bridge from chipone.
> +It has a flexible configuration of MIPI DSI signal input
> +and produce RGB565, RGB666, RGB888 output format.
> +
> +Required properties for RGB:
> +- compatible: must be "chipone,icn6211" and one of:
> +  * "bananapi,icn6211"

Why is that compatible needed?

> +- reg: the virtual channel number of a DSI peripheral
> +- reset-gpios: a GPIO phandle for the reset pin
> +
> +The device node can contain following 'port' child nodes,
> +according to the OF graph bindings defined in [1]:
> +  0: DSI Input, not required, if the bridge is DSI controlled
> +  1: RGB Output, mandatory

Your example doesn't have that input port

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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