ARM: mach-bcm: add ARM_ERRATA_775420 · ffc1086a55 - Gogs: Go Git Service GfA electronic

ARM: mach-bcm: add ARM_ERRATA_775420

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>

Scott Branden 11 years ago

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