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    Subject[PATCH V11 06/12] dt-bindings: PCI: designware: Add binding for CDM register check
    Date
    Add support to enable CDM (Configuration Dependent Module) registers check
    for any data corruption. CDM registers include standard PCIe configuration
    space registers, Port Logic registers and iATU and DMA registers.
    Refer Section S.4 of Synopsys DesignWare Cores PCI Express Controller Databook
    Version 4.90a

    Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
    Reviewed-by: Thierry Reding <treding@nvidia.com>
    Reviewed-by: Rob Herring <robh@kernel.org>
    ---
    Changes since [v10]:
    * None

    Changes since [v9]:
    * None

    Changes since [v8]:
    * None

    Changes since [v7]:
    * None

    Changes since [v6]:
    * Changed "enable-cdm-check" to "snps,enable-cdm-check"

    Changes since [v5]:
    * None

    Changes since [v4]:
    * None

    Changes since [v3]:
    * None

    Changes since [v2]:
    * Changed flag name from 'cdm-check' to 'enable-cdm-check'
    * Added info about Port Logic and DMA registers being part of CDM

    Changes since [v1]:
    * This is a new patch in v2 series

    Documentation/devicetree/bindings/pci/designware-pcie.txt | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/Documentation/devicetree/bindings/pci/designware-pcie.txt b/Documentation/devicetree/bindings/pci/designware-pcie.txt
    index 5561a1c060d0..3fba04da6a59 100644
    --- a/Documentation/devicetree/bindings/pci/designware-pcie.txt
    +++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt
    @@ -34,6 +34,11 @@ Optional properties:
    - clock-names: Must include the following entries:
    - "pcie"
    - "pcie_bus"
    +- snps,enable-cdm-check: This is a boolean property and if present enables
    + automatic checking of CDM (Configuration Dependent Module) registers
    + for data corruption. CDM registers include standard PCIe configuration
    + space registers, Port Logic registers, DMA and iATU (internal Address
    + Translation Unit) registers.
    RC mode:
    - num-viewport: number of view ports configured in hardware. If a platform
    does not specify it, the driver assumes 2.
    --
    2.17.1
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