netdev - Re: [PATCH net-next] octeontx2-af: cn10k: devlink params to configure TIM

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Message-ID: <20211124164852.46784f83@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Wed, 24 Nov 2021 16:48:52 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Shijith Thotton <sthotton@...vell.com>
Cc:     <davem@...emloft.net>, <sgoutham@...vell.com>,
        <jerinj@...vell.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] octeontx2-af: cn10k: devlink params to
 configure TIM

On Wed, 24 Nov 2021 10:38:41 +0530 Shijith Thotton wrote:
> Added devlink parameters to configure the source clock of TIM block.
> Supported clocks are TENNS, GPIOS, GTI, PTP, SYNC, BTS, EXT_MIO and
> EXT_GTI.
> 
> To adjust a given clock, the required delta can be written to the
> corresponding tim_adjust_<clock> parameter and tim_adjust_timers
> parameter can be used to trigger the adjustment. tim_capture_<clock>
> parameter can be used to verify the adjusted values for a clock.
> 
> Example using tenns clock source:
> To adjust a clock source
>  # devlink dev param set pci/0002:01:00.0 name tim_adjust_tenns \
>         value "1000" cmode runtime
> 
> To trigger adjustment
>  # devlink dev param set pci/0002:01:00.0 name tim_adjust_timers \
>         value 1 cmode runtime

PTP subsystem exists.