Hi Richard,

On Thu, Nov 12, 2020 at 12:06:42PM -0600, richard.g...@linux.intel.com wrote:
> From: Richard Gong <richard.g...@intel.com>
> 
> Add authenticate-fpga-config property for FPGA bitstream authentication.
> 
> Signed-off-by: Richard Gong <richard.g...@intel.com>
> ---
>  Documentation/devicetree/bindings/fpga/fpga-region.txt | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/fpga/fpga-region.txt 
> b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> index e811cf8..7a512bc 100644
> --- a/Documentation/devicetree/bindings/fpga/fpga-region.txt
> +++ b/Documentation/devicetree/bindings/fpga/fpga-region.txt
> @@ -187,6 +187,7 @@ Optional properties:
>  - external-fpga-config : boolean, set if the FPGA has already been configured
>       prior to OS boot up.
>  - encrypted-fpga-config : boolean, set if the bitstream is encrypted
> +- authenticate-fpga-config : boolean, set if do bitstream authentication
It is unclear to me from the description whether this entails
authentication + reconfiguration or just authentication.

If the latter is the case this should probably be described as such.

>  - region-unfreeze-timeout-us : The maximum time in microseconds to wait for
>       bridges to successfully become enabled after the region has been
>       programmed.
> -- 
> 2.7.4
> 

Thanks

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