Hi,

On Sun, May 01, 2016 at 10:52:36AM +0200, Pavel Machek wrote:

On Fri 2016-04-29 22:06:00, Sebastian Reichel wrote:

quoted

On Thu, Apr 21, 2016 at 03:04:50PM +0200, Pali Roh?r wrote:

quoted

quoted

CONFIG_HSI breaks power management completely, so power management
with modem will be another topic.  

Sebastian, any idea why power management does not work for HSI?

I wasn't aware, that pm_runtime_irq_safe() basically breaks runtime
PM until Tony's fix for musb (even though it's logical when thinking
about it). Currently omap-ssi and omap-ssi-port make use of
pm_runtime_irq_safe().

Since pm_runtime_get_sync/pm_runtime_put_sync is called from
tasklets in omap-ssi (and omap-ssi-port) it cannot be simply
removed. So fixing PM for the ssi controller requires reworking
the driver in a non trivial way.

I see latest series, and it also talks about frequency scaling. But I
guess it is not going to fix this issue?

No, this is independent of the runtime PM problems. I also worked
on runtime PM/idling yesterday and pm_runtime_irq_safe is the main
culprit for breaking it (not the only one, though). It's not yet
finished though

-- Sebastian
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