From mboxrd@z Thu Jan 1 00:00:00 1970 From: t-kristo@ti.com (Tero Kristo) Date: Wed, 25 Apr 2012 10:31:50 +0300 Subject: [PATCH 11/19] ARM: OMAP4: PM: save/restore CM L3INSTR registers when MPU hits OSWR/OFF mode In-Reply-To: <4F96E9A2.8080908@ti.com> References: <1334914432-26456-1-git-send-email-t-kristo@ti.com> <1334914432-26456-12-git-send-email-t-kristo@ti.com> <4F96E9A2.8080908@ti.com> Message-ID: <1335339110.2149.108.camel@sokoban> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > > > > 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