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| author | Linu Cherian <linu.cherian@cavium.com> | 2017-06-22 14:05:37 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-06-23 18:58:03 +0200 |
| commit | e5b829de053d9994dfc8652ce558e90e3406c578 (patch) | |
| tree | 6215ecb21bf1ebad7ff0e5a123369d1cb69d764d /Documentation/arm64 | |
| parent | ACPI/IORT: Fixup SMMUv3 resource size for Cavium ThunderX2 SMMUv3 model (diff) | |
| download | linux-e5b829de053d9994dfc8652ce558e90e3406c578.tar.xz linux-e5b829de053d9994dfc8652ce558e90e3406c578.zip | |
iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74
Cavium ThunderX2 SMMU implementation doesn't support page 1 register space
and PAGE0_REGS_ONLY option is enabled as an errata workaround.
This option when turned on, replaces all page 1 offsets used for
EVTQ_PROD/CONS, PRIQ_PROD/CONS register access with page 0 offsets.
SMMU resource size checks are now based on SMMU option PAGE0_REGS_ONLY,
since resource size can be either 64k/128k.
For this, arm_smmu_device_dt_probe/acpi_probe has been moved before
platform_get_resource call, so that SMMU options are set beforehand.
Signed-off-by: Linu Cherian <linu.cherian@cavium.com>
Signed-off-by: Geetha Sowjanya <geethasowjanya.akula@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/arm64')
| -rw-r--r-- | Documentation/arm64/silicon-errata.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt index 10f2dddbf449..4693a328947a 100644 --- a/Documentation/arm64/silicon-errata.txt +++ b/Documentation/arm64/silicon-errata.txt @@ -62,6 +62,7 @@ stable kernels. | Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 | | Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 | | Cavium | ThunderX SMMUv2 | #27704 | N/A | +| Cavium | ThunderX2 SMMUv3| #74 | N/A | | | | | | | Freescale/NXP | LS2080A/LS1043A | A-008585 | FSL_ERRATUM_A008585 | | | | | | |