[PATCH 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode
Tero Kristo
t-kristo at ti.com
Wed Apr 25 03:31:50 EDT 2012
On Tue, 2012-04-24 at 12:57 -0500, Jon Hunter wrote:
> Hi Tero,
>
> On 04/20/2012 04:33 AM, Tero Kristo wrote:
> > 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 appears to be an errata. So, it would be good to state explicitly
> here that all revisions of all omap4 devices are impacted by this
> errata. The code implies this but for documentation purposes it would be
> worth stating.
Okay, I'll add some extra beef here.
-Tero
More information about the linux-arm-kernel
mailing list