From: shawn.guo@freescale.com (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: add revision info for PL310 errata 588369 and 727915
Date: Wed, 2 Jul 2014 15:23:36 +0800 [thread overview]
Message-ID: <1404285816-3763-1-git-send-email-shawn.guo@freescale.com> (raw)
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 <shawn.guo@freescale.com>
---
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
next reply other threads:[~2014-07-02 7:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-02 7:23 Shawn Guo [this message]
2014-07-07 14:07 ` [PATCH] ARM: add revision info for PL310 errata 588369 and 727915 Shawn Guo
2014-07-07 15:44 ` Russell King - ARM Linux
2014-07-08 2:09 ` Shawn Guo
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