[PATCH 1/2] ARM: OMAP3: PM: remove superfluous calls to pwrdm_clear_all_prev_pwrst()

On Thu, 2 Feb 2012, Shilimkar, Santosh wrote:

Yes, we do have issue with below APIs for OMAP4 and onwards design
because of the PRCM change.

pwrdm_clear_all_prev_pwrst
pwrdm_*_mem_*

There use to be a single power state and memory state register till OMAP3
at power domain level which can give you the logic and memory last test
which is needed for OSWR.

On OMAP4, we have registers per modules and it becomes difficult to model
this difference in APIs. Initially we tried to fix that with [1] and
then later realized
that's not going to work on OMAP4 + devices because of mentioned issue.

If the registers are per-module, it seems like the best place for those 
would be the hwmod layer.  Do you think that makes sense?  So, something 
like omap_hwmod_clear_all_prev_pwrst(), etc.?  Seems like that should be 
pretty efficient.


- Paul