linux-kernel - Re: [Patch V5] drivers: power: Add support for bq24735 charger

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Date:	Mon, 14 Oct 2013 14:26:50 -0400
From:	Rhyland Klein <rklein@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Anton Vorontsov <anton@...msg.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Darbha Sriharsha <dsriharsha@...dia.com>,
	Manish Badarkha <badarkhe.manish@...il.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mark Rutland <Mark.Rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Subject: Re: [Patch V5] drivers: power: Add support for bq24735 charger

On 10/14/2013 2:21 PM, Stephen Warren wrote:
> On 10/11/2013 03:15 PM, Rhyland Klein wrote:
>> From: Darbha Sriharsha <dsriharsha@...dia.com>
>>
>> Adds support for the bq24735 charger chipset. The bq24735 is a
>> high-efficiency, synchronous battery charger.
>>
>> It allows control of the charging current, input current, and the charger
>> voltage DAC's through SMBus.
> 
> Please CC the DT bindings maintainers on patches that add DT bindings.

Oops, sorry, will do in the future.

> 
>> diff --git a/Documentation/devicetree/bindings/power_supply/ti,bq24735.txt b/Documentation/devicetree/bindings/power_supply/ti,bq24735.txt
> 
>> +Optional properties :
> 
>> + - ti,ac-detect-gpios : This GPIO is optionally used to read the AC adapter
>> +   presence.
> 
> Is that actually a property of the BQ24735 chip itself (i.e. is it an
> output signal from the chip), or part of the board/system?

The gpio itself is actually what the IRQ line is tied to from the
bq24735 -> tegra (in this case). In other words this is a Host GPIO that
is configured as an input and connected to the bq24735.

-rhyland

> 
> Aside from that, the binding looks reasonable to me (although I'm no
> longer a DT bindings maintainer).
> 


-- 
nvpublic
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