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

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Message-ID: <51DA6BD4.1040300@nvidia.com>
Date:	Mon, 8 Jul 2013 15:35:48 +0800
From:	Wei Ni <wni@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	Alex Courbot <acourbot@...dia.com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	Matthew Longnecker <MLongnecker@...dia.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"lm-sensors@...sensors.org" <lm-sensors@...sensors.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 1/2] ARM: dt: t30 cardhu: add dt entry for lm90

On 07/06/2013 01:38 AM, Stephen Warren wrote:
> On 07/04/2013 03:09 AM, Wei Ni wrote:
>> Enable thermal sensor lm90 for t30 cardhu.
> 
>> diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsi
> 
>> +		nct1008: nct1008 {
>> +			compatible = "lm90,nct1008";
> 
> "lm90" isn't a valid vendor prefix. I believe the value you want is
> "onnn,nct1008". Same comment for patch 2/2.
> 
The lm90 doesn't support device tree very well. In the DT, we need to
named as "lm90" so that the lm90 driver can be loaded, and we also need
to add "nct1008" to indicate this is the nct1008 device, so that the
lm90 driver can be loaded with the right i2c_device_id->driver_data.

I set the " compatible = "lm90,nct1008" ", this is the simplest way, and
we doesn't need to change the lm90.c.

Thanks.
Wei.
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