diff mbox

ARM: mach-bcm: add ARM_ERRATA_775420

Message ID 1397778296-27537-1-git-send-email-sbranden@broadcom.com (mailing list archive)
State New, archived
Headers show

Commit Message

Scott Branden April 17, 2014, 11:44 p.m. UTC 
ARM_ERRATA_775420 needs to be enabled.

A data cache maintenance operation which aborts, followed by an ISB,
without any DSB in-between, might lead to deadlock.

Affects: bug present in Cortex-A9 r3p0 and earlier. Fixed in r4p0.

Cortex-A9 r3p0 is used in a multitude of Broadcom parts including
the bcm21664, bcm281xx, 5301x families of devices.

Signed-off-by: Scott Branden <sbranden@broadcom.com>
Tested-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Alex Edler <edler@linaro.org>
Acked-by: Matt Porter <mporter@linaro.org>
---
 arch/arm/mach-bcm/Kconfig |    1 +
 1 file changed, 1 insertion(+)

Comments

Scott Branden April 18, 2014, 5:12 p.m. UTC | #1 
On 14-04-17 04:44 PM, Scott Branden wrote:
> ARM_ERRATA_775420 needs to be enabled.
>
> A data cache maintenance operation which aborts, followed by an ISB,
> without any DSB in-between, might lead to deadlock.
>
> Affects: bug present in Cortex-A9 r3p0 and earlier. Fixed in r4p0.
>
> Cortex-A9 r3p0 is used in a multitude of Broadcom parts including
> the bcm21664, bcm281xx, 5301x families of devices.
>
> Signed-off-by: Scott Branden <sbranden@broadcom.com>
> Tested-by: Markus Mayer <markus.mayer@linaro.org>
> Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
> Reviewed-by: Alex Edler <edler@linaro.org>
New patch V2 being sent out to correct Alex' last name.
diff mbox

Patch

diff --git a/arch/arm/mach-bcm/Kconfig b/arch/arm/mach-bcm/Kconfig
index 49c914c..9ef7f65 100644
--- a/arch/arm/mach-bcm/Kconfig
+++ b/arch/arm/mach-bcm/Kconfig
@@ -15,6 +15,7 @@  config ARCH_BCM_MOBILE
 	select ARCH_REQUIRE_GPIOLIB
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_764369 if SMP
+	select ARM_ERRATA_775420
 	select ARM_GIC
 	select GPIO_BCM_KONA
 	select TICK_ONESHOT