linux-kernel - Re: [RFC 1/2] Dcumentation: bridge: Add documentation for ps8640 DT properties

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Date:	Fri, 16 Oct 2015 14:04:47 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	CK Hu <ck.hu@...iatek.com>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	David Airlie <airlied@...ux.ie>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Jitao Shi <jitao.shi@...iatek.com>,
	Thierry Reding <treding@...dia.com>,
	Ajay Kumar <ajaykumar.rs@...sung.com>,
	Inki Dae <inki.dae@...sung.com>,
	Rahul Sharma <rahul.sharma@...sung.com>,
	Sean Paul <seanpaul@...omium.org>,
	Vincent Palatin <vpalatin@...omium.org>,
	Andy Yan <andy.yan@...k-chips.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Russell King <rmk+kernel@....linux.org.uk>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
	Sascha Hauer <kernel@...gutronix.de>,
	yingjoe.chen@...iatek.com, eddie.huang@...iatek.com,
	cawa.cheng@...iatek.com
Subject: Re: [RFC 1/2] Dcumentation: bridge: Add documentation for ps8640 DT
 properties

On Fri, Oct 16, 2015 at 08:15:08PM +0800, CK Hu wrote:
> From: Jitao Shi <jitao.shi@...iatek.com>
> 
> Add documentation for DT properties supported by ps8640
> DSI-eDP converter.
> 
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> ---
>  .../devicetree/bindings/video/bridge/ps8640.txt    |   48 ++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/video/bridge/ps8640.txt
> 
> diff --git a/Documentation/devicetree/bindings/video/bridge/ps8640.txt b/Documentation/devicetree/bindings/video/bridge/ps8640.txt
> new file mode 100644
> index 0000000..450b5df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/bridge/ps8640.txt
> @@ -0,0 +1,48 @@
> +ps8640-bridge bindings
> +
> +Required properties:
> +	- compatible: "parade,ps8640"
> +	- reg: first i2c address of the bridge

Ther can be multiple addresses?

> +	- power-gpios: OF device-tree gpio specification for power pin.
> +	- reset-gpios: OF device-tree gpio specification for reset pin.
> +	- mode-sel-gpios: OF device-tree gpio specification for mode-sel pin.
> +	- ps8640-1v2-supply: OF device-tree regulator specification for 1v2.
> +	- ps8640-3v3-supply: OF device-tree regulator specification for 3v3.

There's no need for the "ps8640-" prefix on these two. Please drop it.

> +Optional properties:
> +	- video interfaces: Device node can contain video interface port
> +			    nodes for panel according to [1].

Replace this part with:

The device node can contain video interface port nodes per the
video-interfaces binding [1].

Thanks,
Mark.

> +
> +[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
> +
> +Example:
> +	edp-bridge@18 {
> +		compatible = "parade,ps8640";
> +		reg = <0x18>;
> +		power-gpios = <&pio 116 GPIO_ACTIVE_HIGH>;
> +		reset-gpios = <&pio 115 GPIO_ACTIVE_HIGH>;
> +		mode-sel-gpios = <&pio 92 GPIO_ACTIVE_HIGH>;
> +		ps8640-1v2-supply = <&ps8640_fixed_1v2>;
> +		ps8640-3v3-supply = <&mt6397_vgp2_reg>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +
> +				ps8640_in: endpoint {
> +					remote-endpoint = <&dsi0_out>;
> +				};
> +			};
> +
> +			port@1 {
> +				reg = <1>;
> +
> +				ps8640_out: endpoint {
> +					remote-endpoint = <&panel_in>;
> +				};
> +			};
> +		};
> +	};
> -- 
> 1.7.9.5
> 
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