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SubjectRe: [PATCHv1 3/4] dt-bindings: fpga: add authenticate-fpga-config property
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Hi Moritz,


On 11/15/20 1:21 PM, Moritz Fischer wrote:
> Hi Richard,
>
> On Thu, Nov 12, 2020 at 12:06:42PM -0600, richard.gong@linux.intel.com wrote:
>> From: Richard Gong <richard.gong@intel.com>
>>
>> Add authenticate-fpga-config property for FPGA bitstream authentication.
>>
>> Signed-off-by: Richard Gong <richard.gong@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.

It is for authentication only, just make the signed bitstream has the
valid signatures.

Regards,
Richard

>
>> - 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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