Re: [PATCH 1/1] Add all TWL4030 regulators to Regulator framework

["Peter 'p2' De Schrijver" <peter.de-schrijver@nokia.com>]

On Thu, Nov 19, 2009 at 08:04:08AM +0100, Keski-Saari Juha.1 (EXT-Teleca/Helsinki) wrote:
> ext Mark Brown wrote:
> > On Wed, Nov 18, 2009 at 04:36:09PM +0200, Eduardo Valentin wrote:
> > 
> >> But maybe these VINT* should be set as always_on in twl4030-regulator driver?
> > 
> > Can they support any external load at all?  If not then it would make
> > sense for the chip driver to at least provide a default set of
> > constraints for them rather than forcing all the machine drivers to do
> > it manually.
> 
>  From the TRM it appears that the max current output values are as follows
> 
> VINTANA1 - 30mA
> VINTANA2 - 250mA
> VINTDIG  - 100mA
> 
> Theoretically they may be able to support external load depending on your machine configuration but still I think providing constraints for them in 
> the chip driver could be a good idea since the "always-on" limitation is imposed by the chip and not the machine. Without these three supplies the TWL 
> does not function properly, if at all. Also worth noting is that the current implementation of RegulatorFW doesn't appear to be able to turn these 
> supplies off (comparing TWL register content with framework status).

VINTANA2 can be turned off if MADC, audio and USB are not used. 

Cheers,

Peter.
-- 
goa is a state of mind