Re: [net-next PATCH v4] octeontx2-pf: Use PTP HW timestamp counter atomic update feature

[Simon Horman]

On Mon, Aug 21, 2023 at 04:06:29PM +0530, Sai Krishna wrote:
> Some of the newer silicon versions in CN10K series supports a feature
> where in the current PTP timestamp in HW can be updated atomically
> without losing any cpu cycles unlike read/modify/write register.
> This patch uses this feature so that PTP accuracy can be improved
> while adjusting the master offset in HW. There is no need for SW
> timecounter when using this feature. So removed references to SW
> timecounter wherever appropriate.
> 
> Signed-off-by: Sai Krishna <saikrishnag@xxxxxxxxxxx>
> Signed-off-by: Naveen Mamindlapalli <naveenm@xxxxxxxxxxx>
> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@xxxxxxxxxxx>
> Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@xxxxxxxxxxxx>
> ---
> v4:
>     - Addressed review comments given by Leon Romanovsky
>         1. Unlocked mutex in error conditions.
> v3:
>     - Addressed review comments given by Jakub Kicinski
>         1. Fixed re-ordering of headers in alphabetical order
>         2. Refactored SoC revision identification logic
>         3. CN10K errata revisions can be different from atomic update
>            supported revision devices.
>         4. Removed ptp device check.
> v2:
>     - Addressed review comments given by Simon Horman, Kalesh Anakkur Purayil
> 	1. Removed inline keyword for function in .c file
>         2. Modified/optimized conditions related boolean

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>