On Mon, May 13, 2019 at 10:36:17AM +0530, Vidya Sagar wrote: > 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@xxxxxxxxxx> > --- > 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..85b872c42a9f 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" > +- 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. snps,enable-cdm-check > 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 >
