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Miller" , Heiner Kallweit , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Woojung Huh , Arun Ramadoss , Richard Cochran , Russell King , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, linux-stm32@st-md-mailman.stormreply.com Subject: Re: [PATCH net-next v1 2/4] net: phy: micrel: lan8841: set default PTP latency values Message-ID: References: <20240417164316.1755299-1-o.rempel@pengutronix.de> <20240417164316.1755299-3-o.rempel@pengutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: > > What affect does this have on systems which have already applied > > adjustments in user space to correct for this? Will this cause > > regressions for such systems? > > Yes. > > > I know Richard has rejected changes like this in the past. > > In this case I would need to extend the ethtool interface. The driver > should provide recommended values and the user space can optionally > read them and optionally write them to the HW. I suggest you go read older messages from Richard. It was a discussion with Microchip about one of their PHYs. Andrew