linux-kernel - Re: [PATCH v4] media: st-rc: Add ST remote control driver

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Message-ID: <5240A740.7000407@wwwdotorg.org>
Date:	Mon, 23 Sep 2013 14:40:32 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Srinivas KANDAGATLA <srinivas.kandagatla@...com>
CC:	linux-media@...r.kernel.org, Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Grant Likely <grant.likely@...aro.org>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] media: st-rc: Add ST remote control driver

On 09/19/2013 02:59 AM, Srinivas KANDAGATLA wrote:
> This patch adds support to ST RC driver, which is basically a IR/UHF
> receiver and transmitter. This IP (IRB) is common across all the ST
> parts for settop box platforms. IRB is embedded in ST COMMS IP block.
> It supports both Rx & Tx functionality.
> 
> In this driver adds only Rx functionality via LIRC codec.

> diff --git a/Documentation/devicetree/bindings/media/st-rc.txt b/Documentation/devicetree/bindings/media/st-rc.txt

> +Required properties:
> +	- compatible: should contain "st,comms-irb".
> +	- reg: base physical address of the controller and length of memory
> +	mapped  region.

Nits:

The indentation is a little odd here; I'd expect the - to be in column
1, at least that's how most other binding docs are written. Not a big
deal though.

It'd be nice to indent the continuation lines (e.g. "mapped region") a
bit more so it's easier to see where each new entry starts.

There are two spaces in "mapped  region".

> +	- rx-mode: can be "infrared" or "uhf". rx-mode should be present iff the
> +	  rx pins are wired up.
> +	- tx-mode: should be "infrared". tx-mode should be present iff the tx
> +	  pins are wired up.

Should those property names be prefixed with "st,"; I assume they're
specific to this binding rather than something generic that applies to
all IR controller bindings? If you expect them to be generic, it's fine.

> +	- clocks : phandle with clock-specifier pair.

For what clock?
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