On Wed, 29 Jun 2011, T Krishnamoorthy, Balaji wrote:

> On Wed, Jun 29, 2011 at 12:11 AM, Paul Walmsley <paul@pwsan.com> wrote:
> > On Tue, 28 Jun 2011, T Krishnamoorthy, Balaji wrote:
> >
> >> On Tue, Jun 28, 2011 at 10:52 PM, Paul Walmsley <paul@pwsan.com> wrote:
> >> >
> >> > On Wed, 22 Jun 2011, Balaji T K wrote:
> >> >
> >> >> Use runtime autosuspend APIs to enable auto suspend delay
> >> >
> >> > Does this really need to use runtime autosuspend?  Seems to me that since
> >> > PM runtime is just controlling the MMC IP blocks and not the regulators in
> >> > this instance, this could simply use pm_runtime_put*() and just avoid the
> >> > extra power wastage and complexity involved in autosuspend.
> >>
> >> I have seen some instabilities if delay is very less, on some production boards.
> >
> > Could you be more specific?  What type of instabilities did you see?
> 
> There have been some experiments on our customer programs to reduce this 
> value to a few ms and infrequent crashes were observed (stress testing 
> for several hours) while trying to access the controller registers.

Was there an oops?  Any analysis, etc.?


- Paul