[PATCH v2 1/9] omap4: powerdomain: Add supported INACTIVE power state

[Paul Walmsley]

Hi

On Fri, 4 Feb 2011, Santosh Shilimkar wrote:

> On OMAP4, one can explicitly program INACTIVE as the power state of
> the logic area inside the power domain. Techincally PD state programmed
> to ON and if all the clock domains within the PD are idled, is equivalent
> tp PD programmed to INACTIVE and all the clock domains within the PD are
> idled. There won't be any power difference in above two.
> 
> This patch adds the support to allow power domain INACTIVE programming
> which is supported on OMAP4.
> 
> The powerdomain autogen script is updated accordingly.

Continuing the discussion here:

   http://www.mail-archive.com/linux-omap@vger.kernel.org/msg43509.html

1. It appears that the OMAP4 powerdomain ON-ACTIVE state is a new state 
for OMAP4, and does not exist as such on previous chips (unless the 
PRM_VOLTCTRL.AUTO_* bits are all disabled)

2. It also appears that the OMAP4 powerdomain ON-INACTIVE state 
is equivalent to the OMAP3 powerdomain ON state (again, assuming that the 
PRM_VOLTCTRL.AUTO_SLEEP bit is set on OMAP3).

Could you please comment on whether these statements are true or false?


- Paul