[PATCHv2 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode

[Kevin Hilman]

Tero Kristo <t-kristo at ti.com> writes:

> From: Rajendra Nayak <rnayak at ti.com>
>
> On HS devices on the way out of MPU OSWR and OFF ROM code wrongly
> overwrites the CM L3INSTR registers. So to avoid this, save them and
> restore on the way out from MPU OSWR/OFF.
>
> This errata applies to all HS/EMU versions of OMAP4.
>
> Signed-off-by: Rajendra Nayak <rnayak at ti.com>
> Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> [t-kristo at ti.com: added omap4 pm errata support]
> Signed-off-by: Tero Kristo <t-kristo at ti.com>

Let's use the cluster PM notifiers here too, using the PM errata check
when registering the notifier.

Kevin