linux-kernel - Re: [PATCH v4 1/3] dt-bindings: display: bridge: Document THC63LVD1024 LVDS decoder

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Message-ID: <ee9a65b5-28ca-7404-36e2-29732e9ddfb8@samsung.com>
Date:   Thu, 15 Mar 2018 14:14:28 +0100
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     Jacopo Mondi <jacopo+renesas@...ndi.org>, architt@...eaurora.org,
        Laurent.pinchart@...asonboard.com, airlied@...ux.ie,
        horms@...ge.net.au, magnus.damm@...il.com, geert@...ux-m68k.org,
        niklas.soderlund@...natech.se, sergei.shtylyov@...entembedded.com,
        robh+dt@...nel.org, mark.rutland@....com
Cc:     dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] dt-bindings: display: bridge: Document
 THC63LVD1024 LVDS decoder

On 15.03.2018 11:56, Jacopo Mondi wrote:
> Document Thine THC63LVD1024 LVDS decoder device tree bindings.
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
> ---
>  .../bindings/display/bridge/thine,thc63lvd1024.txt | 63 ++++++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
> new file mode 100644
> index 0000000..0936bde
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
> @@ -0,0 +1,63 @@
> +Thine Electronics THC63LVD1024 LVDS decoder
> +-------------------------------------------
> +
> +The THC63LVD1024 is a dual link LVDS receiver designed to convert LVDS streams
> +to parallel data outputs. The chip supports single/dual input/output modes,
> +handling up to two two input LVDS stream and up to two digital CMOS/TTL outputs.
> +
> +Required properties:
> +- compatible: Shall be "thine,thc63lvd1024",
> +
> +Optional properties:
> +- vcc-supply: Power supply for TTL output and digital circuitry
> +- cvcc-supply: Power supply for TTL CLOCKOUT signal
> +- lvcc-supply: Power supply for LVDS inputs
> +- pvcc-supply: Power supply for PLL circuitry
> +- pdwn-gpios: Power down GPIO signal. Active low.
> +- oe-gpios: Output enable GPIO signal. Active high.

Nitpick: different lines ends differently: period, dot, nothing.
Another thing if there will be next iteration it would be good to
emphasize converter has no control bus.
Anyway:

Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>

 --
Regards
Andrzej

> +
> +The THC63LVD1024 video port connections are modeled according
> +to OF graph bindings specified by Documentation/devicetree/bindings/graph.txt
> +
> +Required video port nodes:
> +- Port@0: First LVDS input port
> +- Port@2: First digital CMOS/TTL parallel output
> +
> +Optional video port nodes:
> +- Port@1: Second LVDS input port
> +- Port@3: Second digital CMOS/TTL parallel output
> +
> +Example:
> +--------
> +
> +	thc63lvd1024: lvds-decoder {
> +		compatible = "thine,thc63lvd1024";
> +
> +		vcc-supply = <&reg_lvds_vcc>;
> +		lvcc-supply = <&reg_lvds_lvcc>;
> +
> +		pdwn-gpio = <&gpio4 15 GPIO_ACTIVE_LOW>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +
> +				lvds_dec_in_0: endpoint {
> +					remote-endpoint = <&lvds_out>;
> +				};
> +			};
> +
> +			port@2{
> +				reg = <2>;
> +
> +				lvds_dec_out_2: endpoint {
> +					remote-endpoint = <&adv7511_in>;
> +				};
> +
> +			};
> +
> +		};
> +	};