Re: [PATCH V6 06/15] dt-bindings: PCI: designware: Add binding for CDM register check

[Rob Herring]

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
>