On Wed, 29 Jun 2011, T Krishnamoorthy, Balaji wrote: > On Wed, Jun 29, 2011 at 12:11 AM, Paul Walmsley <paul@xxxxxxxxx> wrote: > > On Tue, 28 Jun 2011, T Krishnamoorthy, Balaji wrote: > > > >> On Tue, Jun 28, 2011 at 10:52 PM, Paul Walmsley <paul@xxxxxxxxx> 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
