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ARM: mach-bcm: add ARM_ERRATA_775420

PATCH New Scott Branden 2 participants 2 messages Apr 18, 2014 – Apr 25, 2014

Subsystems (3)
Arm (32-bit) Arm sub-architectures Broadcom BCM281XX/BCM11XXX/BCM216XX Arm architecture
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Scott Branden

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PATCH v2 1/1 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 <[email protected]>
Tested-by Markus Mayer <[email protected]>
Reviewed-by Markus Mayer <[email protected]>
Reviewed-by Alex Elder <[email protected]>
Acked-by Matt Porter <[email protected]>
---
 arch/arm/mach-bcm/Kconfig |    1 +
 1 file changed, 1 insertion(+)
arch/arm/mach-bcm/Kconfig +1 -0
index 49c914c..9ef7f65 100644
@@ -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
Signature · 1 line
1.7.9.5
Applied
#1 lore raw

PATCH v2 1/1 ARM: mach-bcm: add ARM_ERRATA_775420

Quoted 9 lines · 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.

Applied to mach-bcm for-3.16/soc

Thanks,
Matt

Quoted 24 lines
Signed-off-by Scott Branden <[email protected]>
Tested-by Markus Mayer <[email protected]>
Reviewed-by Markus Mayer <[email protected]>
Reviewed-by Alex Elder <[email protected]>
Acked-by Matt Porter <[email protected]>
---
 arch/arm/mach-bcm/Kconfig |    1 +
 1 file changed, 1 insertion(+)
arch/arm/mach-bcm/Kconfig +1 -0
index 49c914c..9ef7f65 100644
@@ -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
Signature · 1 line
1.7.9.5