linux-kernel - Re: [PATCH v2 00/14] Add Microchip ZL3073x support (part 1)

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Message-ID: <20250409171713.6e9fb666@kernel.org>
Date: Wed, 9 Apr 2025 17:17:13 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Ivan Vecera <ivecera@...hat.com>
Cc: netdev@...r.kernel.org, Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
 Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>, Jiri Pirko
 <jiri@...nulli.us>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Prathosh Satish
 <Prathosh.Satish@...rochip.com>, Lee Jones <lee@...nel.org>, Kees Cook
 <kees@...nel.org>, Andy Shevchenko <andy@...nel.org>, Andrew Morton
 <akpm@...ux-foundation.org>, Michal Schmidt <mschmidt@...hat.com>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 00/14] Add Microchip ZL3073x support (part 1)

On Wed,  9 Apr 2025 16:42:36 +0200 Ivan Vecera wrote:
> Add support for Microchip Azurite DPLL/PTP/SyncE chip family that
> provides DPLL and PTP functionality. This series bring first part
> that adds the common MFD driver that provides an access to the bus
> that can be either I2C or SPI.
> 
> The next series will bring the DPLL driver that will covers DPLL
> functionality. And another ones will bring PTP driver and flashing
> capability via devlink.
> 
> Testing was done by myself and by Prathosh Satish on Microchip EDS2
> development board with ZL30732 DPLL chip connected over I2C bus.

The DPLL here is for timing, right? Not digital logic?
After a brief glance I'm wondering why mfd, PHC + DPLL 
is a pretty common combo. Am I missing something?