Commit f4e84a5d authored Aug 13, 2019 by Vidya Sagar Committed by Lorenzo Pieralisi Aug 13, 2019

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



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>

parent feee519a

Documentation/devicetree/bindings/pci/designware-pcie.txt

+5 −0

Original line number	Diff line number	Diff line
		@@ -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.

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