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ARM: mvebu: fix Cortex-A9 errata selection for Armada 38x

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Armada 38x uses Cortex-A9 r4p1, but MACH_ARMADA_38X selects the
workaround for erratum 720789, which was fixed in r2p0, and omits
workarounds for errata that still affect r4p1.

Drop ARM_ERRATA_720789 and select ARM_ERRATA_754322 for faulty MMU
translations following an ASID switch and ARM_ERRATA_764319 for
unexpected undefined instruction exceptions when reading debug
registers. Also select ARM_ERRATA_764369 when SMP is enabled to work
around cache maintenance by MVA failing to reach other agents.

The Cortex-A9 r4 Software Developers Errata Notice (ARM UAN 0009D)
lists these errata in sections 2.3.3, 2.5.10 and 2.3.4, respectively.

Link: https://documentation-service.arm.com/static/608118675e70d934bc69f143
Fixes: 9aa30f1c13 ("ARM: mvebu: add initial support for the Armada 380/385 SOCs")
Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
This commit is contained in:
Qingfang Deng 2026-09-20 12:07:37 +08:00 committed by Gregory CLEMENT
parent cee9395acd
commit 76e67df8bc
1 changed files with 3 additions and 1 deletions
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4
arch/arm/mach-mvebu/Kconfig
View File

@ -55,7 +55,9 @@ config MACH_ARMADA_375
config MACH_ARMADA_38X
bool "Marvell Armada 380/385 boards"
depends on ARCH_MULTI_V7
select ARM_ERRATA_720789
select ARM_ERRATA_754322
select ARM_ERRATA_764319
select ARM_ERRATA_764369 if SMP
select PL310_ERRATA_753970
select ARM_GIC
select ARM_GLOBAL_TIMER