Re: [Linuxptp-devel] [PATCH v3 00/11] synce4l: add software for Synchronous Ethernet

[Aya L. <ay...@nv...>]

On 6/21/2022 6:25 PM, Kubalewski, Arkadiusz wrote:
> -----Original Message-----
> From: Aya Levin <ay...@nv...>
> Sent: Sunday, June 19, 2022 6:35 PM
>>
>> Hi,
>>
>> Please elaborate regarding kernel API. I understood from the submission
>> that you plan to start off with some vendor specific sysfs declared in
>> the config file.
>> But I believe this is not the final goal, correct?
>> Do you have kernel patches for review?
>>
>> Thanks,
>> Aya
> 
> Hi,
> 
> SyncE standard needs two abilities from the Network Interface Card:
> - check the status of frequency loop, if it is locked/holdover/etc
> - select one of the PHY ports as a signal source.
What about set status - when SyncE state machine needs to move to holdover?
> 
> Currently in sync4l both of those abilities are provided in form of shell
> commands, so it can be used with any user-space tool.
> 
> For the future, the plan is to have generic netlink based interface/subsystem
> in the kernel. Designed for all devices capable of syntonizing its clock to an
> external source (I am working on it right now), probably also equipped with
> generic sysfs for manual control.
> 
> Thank you,
> Arkadiusz