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[RFC 1/4] irqchip, gicv3-its: Add device tree binding for hisilicon 161010801 erratum

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This erratum describes the limitation of certain HiSilicon platforms
to support the SMMU mappings for MSI transactions and on those platforms
the MSI transactions has to be bypassed by SMMU. The IIDR register of the
GICv3 ITS on these platforms are not properly populated to differentiate
the hardware, hence describe it in device tree.

Signed-off-by: shameer <shameerali.kolothum.thodi@huawei.com>
---
 .../devicetree/bindings/interrupt-controller/arm,gic-v3.txt         | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt
index 4c29cda..84af301 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt
@@ -75,6 +75,12 @@ These nodes must have the following properties:
 - reg: Specifies the base physical address and size of the ITS
   registers.

+Optional
+- hisilicon,erratum-161010801 : A boolean property. Indicates the presence of
+  erratum 161010801, which says that these platforms doesn't support  SMMU
+  mapping for MSI transactions and those transactions has to be bypassed
+  by SMMU.
+
 The main GIC node must contain the appropriate #address-cells,
 #size-cells and ranges properties for the reg property of all ITS
 nodes.
-- 
1.9.1

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[RFC 1/4] irqchip, gicv3-its: Add device tree binding for hisilicon  161010801 erratum Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> - 2017-01-24 14:50 +0100
  Re: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Mark Rutland <mark.rutland@arm.com> - 2017-01-24 15:00 +0100
    RE: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> - 2017-01-24 15:10 +0100
      Re: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Mark Rutland <mark.rutland@arm.com> - 2017-01-24 15:40 +0100
        RE: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> - 2017-01-24 16:20 +0100
          Re: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Marc Zyngier <marc.zyngier@arm.com> - 2017-01-24 16:30 +0100
            RE: [RFC 1/4] irqchip, gicv3-its: Add device tree binding for  hisilicon 161010801 erratum Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com> - 2017-01-24 16:50 +0100

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