On Thu, Apr 24, 2014 at 08:13:16PM +0530, Balaji T K wrote: > On Thursday 24 April 2014 08:09 PM, Felipe Balbi wrote: > >On Thu, Apr 24, 2014 at 08:01:19PM +0530, Balaji T K wrote: > >>On Thursday 27 March 2014 05:34 AM, Felipe Balbi wrote: > >>>Hi, > >>> > >>>this series lets us access the newer registers introduced > >>>back in OMAP4 which give us some valid information about > >>>the OMAP HSMMC IP like max block size, support for ADMA, > >>>support for Retention. > >> > >>"Support for Retention" looks interesting, can you shed more lights on > >>it > > > >HWINFO has a bit (bit 6) which tells you whether retention is supported, > >it's in all TRMs since OMAP3630 or so. > > > >"6 RERETMODE Retention mode generic parameter > > This bit field indicates whether the > > retention mode is supported using the > > pin PIRFFRET. > > > > 0x0: Retention mode disabled > > 0x1: Retention mode enabled" > > > > I have seen that but just wondering how the driver can make use of it > :-)
oh, perhaps you can use to conditionally save context. The difficulty is knowing if we're going to RET or OFF, but that could be extrapolated from pm_qos, perhaps ?!? just a thought. -- balbi
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