Messages in this thread | | | Date | Wed, 20 May 2015 11:03:04 +0100 | From | Catalin Marinas <> | Subject | Re: [V4 PATCH 2/6] arm64 : Introduce support for ACPI _CCA object |
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On Fri, May 15, 2015 at 04:23:10PM -0500, Suravee Suthikulpanit wrote: > From http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, > section 6.2.17 _CCA states that ARM platforms require ACPI _CCA > object to be specified for DMA-cabpable devices. This patch introduces > ACPI_MUST_HAVE_CCA in arm64 Kconfig to specify such requirement. > > In case _CCA is missing, arm64 would assign dummy_dma_ops > to disable DMA capability of the device. > > Signed-off-by: Mark Salter <msalter@redhat.com> > Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > CC: Catalin Marinas <catalin.marinas@arm.com> > CC: Will Deacon <will.deacon@arm.com> > CC: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
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