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Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74

From Will Deacon <will.deacon@arm.com>
Newsgroups linux.kernel
Subject Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #74
Date 2017-05-03 11:50 +0200
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Hi Geetha,

On Tue, May 02, 2017 at 12:01:15PM +0530, Geetha Akula wrote:
> SMMU_IIDR register is broken on T99, that the reason we are using MIDR.

Urgh, that's unfortunate. In what way is it broken?

> If using MIDR is not accepted, can we enable errata based on SMMU resource size?
> some thing like below.

No, you need to get your model number added to IORT after all if the IIDR
can't uniqely identify the part.

Sorry,

Will

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Thread

Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Mark Rutland <mark.rutland@arm.com> - 2017-04-27 18:50 +0200
  Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Will Deacon <will.deacon@arm.com> - 2017-04-27 19:10 +0200
    Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Geetha Akula <geethasowjanya.akula@gmail.com> - 2017-05-02 08:40 +0200
      Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Will Deacon <will.deacon@arm.com> - 2017-05-03 11:50 +0200
        Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Geetha Akula <geethasowjanya.akula@gmail.com> - 2017-05-03 12:40 +0200
        Re: [PATCH 2/3] iommu/arm-smmu-v3: Add workaround for Cavium  ThunderX2 erratum #74 Jon Masters <jcm@jonmasters.org> - 2017-05-05 01:40 +0200

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