Messages in this thread | | | Date | Tue, 11 Jan 2022 14:34:19 +0100 | From | Andrew Lunn <> | Subject | Re: [PATCH net-next v6] net: phy: intel-xway: Add RGMII internal delay configuration |
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> > Martin, > > > > I've got some boards with the GPY111 phy on them and I'm finding that > > modifying XWAY_MDIO_MIICTRL to change the skew has no effect unless I > > do a soft reset (BCMR_RESET) first. I don't see anything in the > > datasheet which specifies this to be the case so I'm interested it > > what you have found. Are you sure adjusting the skews like this > > without a soft (or hard pin based) reset actually works? > > > > Best regards, > > > > Tim > > Hello Tim, > > yes, you are right. It is not applied immediately. The link needs to be > toggled to get this settings active. But my experience shows that this > would be done in the further boot process anyway e.g. by restarting the > autonegotiation etc.
Hi Martin
Have you verified this? Maybe try NFS root, so the kernel is the one up'ing the interface, before user space exists.
Andrew
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