On Mon, Jul 08, 2013 at 06:14:21AM -0700, Guenter Roeck wrote: > On Mon, Jul 08, 2013 at 05:36:05PM +0800, Wei Ni wrote: > > On 07/08/2013 03:50 PM, Jean Delvare wrote: > > > On Mon, 8 Jul 2013 15:35:48 +0800, Wei Ni wrote: > > >> 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. > > > > > > I doubt it, but if this is the case, then please fix it, instead of > > > working the problem around in a different place. > > > > > >> In the DT, we need to > > >> named as "lm90" so that the lm90 driver can be loaded, > > > > > > Not that I am an expert with regards to DT, but this doesn't make any > > > sense to me. AFAIK DT is about devices, not which drivers handle them. > > > > > >> 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. > > > > > > There's no problem with changing the lm90 driver, if this is the right > > > thing to do. > > > > Ok, I will add DT support in the lm90.c in my next version patch. > > > Only if you can show that it is necessary. 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. Thierry
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