Hi Andrew, Thanks for this explanation, it helps understand what's going on. On 2024-05-06 03:51:45 +0200, Andrew Lunn wrote: > What PHY is this? Does it have C22 registers? Can it be identified via > C22 registers 2 and 3? The PHY in question is mv88q2110 (drivers/net/phy/marvell-88q2xxx.c), unfortunately I do not have a datasheet for it so I can't tell you much about it. <snip> > > So i would drop the compatible. See if C22 is sufficient to get the > correct driver loaded. - Remove C45 compatible; Remove C45 read/write in driver The PHY is identified as "Generic PHY", and the correct PHY driver is not used. I can't test more than that as the generic PHY driver do not implement some quirks I need to get the link up. - Remove C45 compatible; Keep C45 read/write in driver The correct PHY driver is used and everything works. - Keep C45 compatible; Remove C45 read/write in driver As described earlier in this thread, the MAC driver can't connect to the PHY as the call-chain described earlier fails. How would you suggest I move forward here? Shall I keep the C45 over C22 read/write in the driver or can I do something else more clever? -- Kind Regards, Niklas Söderlund
