Re: [PATCH net-next 0/5] net: mdio: add timestamped MDIO writes for PHY gettimex64

[Andrew Lunn]

> For example, using PTP_SYS_OFFSET_EXTENDED on the Raspberry Pi CM5 to
> synchronize the system clock from the BCM54210PE PHY PHC leads to the
> system clock being 32 µs ahead of the PHC. On the CM4, it is about 7 µs.
> (The difference is because the MDIO clock frequency is higher on the
> CM4: 10 MHz as opposed to 2.08 MHz on the CM5.)

IEEE 802.3 says the clock should be 2.5Mhz. Does the CM4 use a
clock-frequency DT property to enable this faster clock?

	Andrew