linux-kernel - Re: [lm-sensors] [PATCH 1/2] ARM: dt: t30 cardhu: add dt entry for lm90

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Message-ID: <51DBD0CB.2000504@nvidia.com>
Date:	Tue, 9 Jul 2013 16:58:51 +0800
From:	Wei Ni <wni@...dia.com>
To:	Jean Delvare <khali@...ux-fr.org>
CC:	Thierry Reding <thierry.reding@...il.com>,
	Guenter Roeck <linux@...ck-us.net>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	Matthew Longnecker <MLongnecker@...dia.com>,
	Alex Courbot <acourbot@...dia.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [lm-sensors] [PATCH 1/2] ARM: dt: t30 cardhu: add dt entry for
 lm90

On 07/09/2013 03:55 PM, Jean Delvare wrote:
> On Tue, 9 Jul 2013 15:48:40 +0800, Wei Ni wrote:
>> On 07/09/2013 02:21 PM, Thierry Reding wrote:
>>> It should work out of the box. As a matter of fact the same chip is used
>>> on Tamonten and the DTS files use "onnn,nct1008". That used to work. If
>>> it no longer does then that's a regression.
>>
>> I synced the linux-next from:
>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>> and use the tag v3.10-rc7, but in the lm90.c it doesn't have DT support,
>> such as "onnn,nct1008".
>> I googled it and found there has patch:
>> [PATCH] hwmon: (lm90) Add device tree support , which is in:
>> http://lists.lm-sensors.org/pipermail/lm-sensors/2013-February/038099.html
>> , but it didn't be merged into the linux-next.
> 
> It was not, because of the next reply in the same thread:
> http://lists.lm-sensors.org/pipermail/lm-sensors/2013-February/038100.html
> 
>> which git repository and branch should I use ?
> 
> It is supposed to just work. What doesn't work for you exactly?
> 

Oh, yes, the "onnn,nct1008" can work. I read the i2c driver and the
of_i2c.c carefully, I understand why the lm90 can be loaded by setting
"onnn,nct1008". Indeed, we can set the vendor string to anything, even
"xxx,nct1008", the lm90 also can be loaded correctly.

Anyway, I will use the "onnn,nct1008" in my next version.

Thanks for your comments.
Wei.



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