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dt-bindings: PCI: designware: Add binding for CDM register check

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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>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Vidya Sagar 2019-08-13 17:06:21 +05:30 committed by Lorenzo Pieralisi
parent feee519ae5
commit f4e84a5d9d
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/pci/designware-pcie.txt
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@ -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.