From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.richter@cavium.com (Robert Richter) Date: Wed, 21 Jun 2017 20:19:47 +0200 Subject: [PATCH v8 3/3] iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126 In-Reply-To: <1497968259-16390-4-git-send-email-gakula@caviumnetworks.com> References: <1497968259-16390-1-git-send-email-gakula@caviumnetworks.com> <1497968259-16390-4-git-send-email-gakula@caviumnetworks.com> Message-ID: <20170621181947.GH16981@rric.localdomain> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 20.06.17 19:47:39, Geetha sowjanya wrote: > From: Geetha Sowjanya > > Cavium ThunderX2 SMMU doesn't support MSI and also doesn't have unique irq > lines for gerror, eventq and cmdq-sync. > > SHARED_IRQ option is set as a errata workaround, which allows to share the irq > line by register single irq handler for all the interrupts. I found the entry in silicon-errata.txt missing, is that on purpose? -Robert > > Signed-off-by: Geetha sowjanya > --- > .../devicetree/bindings/iommu/arm,smmu-v3.txt | 5 ++ > drivers/iommu/arm-smmu-v3.c | 73 ++++++++++++++++---- > 2 files changed, 64 insertions(+), 14 deletions(-)