From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Mon, 7 Jul 2014 22:07:09 +0800 Subject: [PATCH] ARM: add revision info for PL310 errata 588369 and 727915 In-Reply-To: <1404285816-3763-1-git-send-email-shawn.guo@freescale.com> References: <1404285816-3763-1-git-send-email-shawn.guo@freescale.com> Message-ID: <20140707140708.GU30239@dragon> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jul 02, 2014 at 03:23:36PM +0800, Shawn Guo wrote: > Add revision info for PL310_ERRATA_588369 and PL310_ERRATA_727915 to > help people understand if they need to enable the errata for their > hardware. > > Signed-off-by: Shawn Guo Any comments on this patch? Otherwise, I'm going to throw it into the patch system. Shawn > --- > arch/arm/mm/Kconfig | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig > index eda0dd0ab97b..9fb8a02b7e35 100644 > --- a/arch/arm/mm/Kconfig > +++ b/arch/arm/mm/Kconfig > @@ -907,8 +907,8 @@ config PL310_ERRATA_588369 > They are architecturally defined to behave as the execution of a > clean operation followed immediately by an invalidate operation, > both performing to the same memory location. This functionality > - is not correctly implemented in PL310 as clean lines are not > - invalidated as a result of these operations. > + is not correctly implemented in PL310 prior to r2p0 (fixed in r2p0) > + as clean lines are not invalidated as a result of these operations. > > config PL310_ERRATA_727915 > bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption" > @@ -919,7 +919,8 @@ config PL310_ERRATA_727915 > PL310 can handle normal accesses while it is in progress. Under very > rare circumstances, due to this erratum, write data can be lost when > PL310 treats a cacheable write transaction during a Clean & > - Invalidate by Way operation. > + Invalidate by Way operation. Revisions prior to r3p1 are affected by > + this errata (fixed in r3p1). > > config PL310_ERRATA_753970 > bool "PL310 errata: cache sync operation may be faulty" > -- > 1.8.3.2 >