From: Jiri Pirko <jiri@resnulli.us>
To: Ivan Vecera <ivecera@redhat.com>
Cc: netdev@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>,
Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>,
"David S. Miller" <davem@davemloft.net>,
Donald Hunter <donald.hunter@gmail.com>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Leon Romanovsky <leon@kernel.org>,
Mark Bloch <mbloch@nvidia.com>,
Michal Schmidt <mschmidt@redhat.com>,
Paolo Abeni <pabeni@redhat.com>,
Pasi Vaananen <pvaanane@redhat.com>,
Petr Oros <poros@redhat.com>,
Prathosh Satish <Prathosh.Satish@microchip.com>,
Saeed Mahameed <saeedm@nvidia.com>,
Shuah Khan <skhan@linuxfoundation.org>,
Simon Horman <horms@kernel.org>,
Tariq Toukan <tariqt@nvidia.com>,
Vadim Fedorenko <vadim.fedorenko@linux.dev>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org
Subject: Re: [PATCH net-next v3 1/2] dpll: add fractional frequency offset to pin-parent-device
Date: Tue, 5 May 2026 13:31:41 +0200 [thread overview]
Message-ID: <afnVGPD5sjpSXz--@FV6GYCPJ69> (raw)
In-Reply-To: <20260504155340.411063-2-ivecera@redhat.com>
Mon, May 04, 2026 at 05:53:39PM +0200, ivecera@redhat.com wrote:
>Add both fractional-frequency-offset (PPM) and
>fractional-frequency-offset-ppt (PPT) attributes to the
>pin-parent-device nested attribute set, alongside the existing
>top-level pin attributes. Both carry the same measurement at
>different precisions.
>
>Distinguish the two contexts in the ffo_get callback by passing
>dpll=NULL for the top-level call and a valid dpll pointer for the
>nested per-parent call. This allows drivers to report a different
>value per parent DPLL if needed. Update mlx5 and zl3073x drivers
>to return -ENODATA for the context they do not yet support.
>
>Add documentation for both FFO attributes to dpll.rst.
>
>Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
next prev parent reply other threads:[~2026-05-05 11:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-04 15:53 [PATCH net-next v3 0/2] dpll: rework fractional frequency offset reporting Ivan Vecera
2026-05-04 15:53 ` [PATCH net-next v3 1/2] dpll: add fractional frequency offset to pin-parent-device Ivan Vecera
2026-05-05 11:31 ` Jiri Pirko [this message]
2026-05-07 1:33 ` Jakub Kicinski
2026-05-07 6:12 ` Ivan Vecera
2026-05-07 14:47 ` Jakub Kicinski
2026-05-07 11:08 ` Jiri Pirko
2026-05-04 15:53 ` [PATCH net-next v3 2/2] dpll: zl3073x: report FFO as DPLL vs input reference offset Ivan Vecera
2026-05-05 14:34 ` Petr Oros
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