[PATCH V2] ARM: mach-bcm: add ARM_ERRATA_775420

[Scott Branden]

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 at broadcom.com>
Tested-by: Markus Mayer <markus.mayer at linaro.org>
Reviewed-by: Markus Mayer <markus.mayer at linaro.org>
Reviewed-by: Alex Elder <elder at linaro.org>
Acked-by: Matt Porter <mporter at linaro.org>
---
 arch/arm/mach-bcm/Kconfig |    1 +
 1 file changed, 1 insertion(+)

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
-- 
1.7.9.5