Commit b8496fae authored by Tomasz Nowicki's avatar Tomasz Nowicki Committed by Xie XiuQi
Browse files

arm64: dts: marvell: keep SMMU disabled by default for Armada 7040 and 8040



stable inclusion
from stable-5.10.4
commit e0dad9a78c853e0b636cc6acae88b2faed6d2fa5
bugzilla: 46903

--------------------------------

commit f43cadef upstream.

FW has to configure devices' StreamIDs so that SMMU is able to lookup
context and do proper translation later on. For Armada 7040 & 8040 and
publicly available FW, most of the devices are configured properly,
but some like ap_sdhci0, PCIe, NIC still remain unassigned which
results in SMMU faults about unmatched StreamID (assuming
ARM_SMMU_DISABLE_BYPASS_BY_DEFAUL=y).

Since there is dependency on custom FW let SMMU be disabled by default.
People who still willing to use SMMU need to enable manually and
use ARM_SMMU_DISABLE_BYPASS_BY_DEFAUL=n (or via kernel command line)
with extra caution.

Fixes: 83a3545d ("arm64: dts: marvell: add SMMU support")
Cc: <stable@vger.kernel.org> # 5.9+
Signed-off-by: default avatarTomasz Nowicki <tn@semihalf.com>
Signed-off-by: default avatarGregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: default avatarChen Jun <chenjun102@huawei.com>
Acked-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
parent f1c4442b
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