Re: [PATCH net-next v2 0/2] net: phy: Add Maxio MAE0621A support

[Andrew Lunn]

> https://www.lcsc.com/datasheet/C49308069.pdf

Cool, thanks for the link.

24.13 1: A broadcast from MAC (A command with PHY address = 0) is
valid. MDC/MDIO will respond to this command.

Please ensure this is disabled. Doing that now before anything is
merged will make life easier in the future.

I don't see any way to control the RGMII delays, or know how it has
been strapped. So this PHY is going to be a real problem. DT
developers make a mess of RGMII delays even when the MAC and PHY do
the right think.

Unless a way is found to either control the delays, or at least know
what it is doing, the only phydev->interface accepted should be
PHY_INTERFACE_MODE_NA. This means 'don't touch'. We have to assume
something else has correctly set the delays in a consistent way. That
is likely to be strapping.

	  Andrew