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ARM: mach-bcm: add ARM_ERRATA_775420

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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 Elder <elder@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This commit is contained in:
Scott Branden 2014-04-18 10:13:20 -07:00 committed by Matt Porter
parent fd33615897
commit ffc1086a55
1 changed files with 1 additions and 0 deletions
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arch/arm/mach-bcm/Kconfig
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@ -12,6 +12,7 @@ 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