linux-kernel - Re: [PATCH v1 01/11] dt-bindings: display/bridge: Add bindings for ti948

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Date:   Tue, 11 Jun 2019 21:03:16 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Michael Drake <michael.drake@...ethink.co.uk>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel@...ts.codethink.co.uk,
        Patrick Glaser <pglaser@...la.com>, Nate Case <ncase@...la.com>
Subject: Re: [PATCH v1 01/11] dt-bindings: display/bridge: Add bindings for
 ti948

Hi Michael,

Thank you for the patch.

On Tue, Jun 11, 2019 at 03:04:02PM +0100, Michael Drake wrote:
> Adds device tree bindings for:
> 
>   TI DS90UB948-Q1 2K FPD-Link III to OpenLDI Deserializer
> 
> The device has the compatible string "ti,ds90ub948", and
> and allows an arrray of strings to be provided as regulator

s/arrray/array/

> names to enable for operation of the device.
> 
> Signed-off-by: Michael Drake <michael.drake@...ethink.co.uk>
> Cc: Patrick Glaser <pglaser@...la.com>
> Cc: Nate Case <ncase@...la.com>
> ---
>  .../bindings/display/bridge/ti,ds90ub948.txt  | 24 +++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,ds90ub948.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ds90ub948.txt b/Documentation/devicetree/bindings/display/bridge/ti,ds90ub948.txt
> new file mode 100644
> index 000000000000..f9e86cb22900
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/ti,ds90ub948.txt
> @@ -0,0 +1,24 @@
> +TI DS90UB948-Q1 2K FPD-Link III to OpenLDI Deserializer
> +=======================================================
> +
> +This is the binding for Texas Instruments DS90UB948-Q1 bridge deserializer.
> +
> +This device supports I2C only.

Then the DT node should be a child of its I2C controller, and have a reg
property.

> +
> +Required properties:
> +
> +- compatible: "ti,ds90ub948"
> +
> +Optional properties:
> +
> +- regulators: List of regulator name strings to enable for operation of device.

There's a standard binding for regulators, using *-supply properties.
Please use them.

You should also use the OF graph DT bindings to model the data
connections.

> +
> +Example
> +-------
> +
> +ti948: ds90ub948@0 {
> +	compatible = "ti,ds90ub948";
> +
> +	regulators: "vcc",
> +	            "vcc_disp";
> +};

-- 
Regards,

Laurent Pinchart