Re: [PATCH net-next 5/5] net: mdio: bcm-unimac: implement timestamped MDIO writes

[Nicolai Buchwitz]

Hi Andrew

On 12.10.2026 13:51, Andrew Lunn wrote:

> [...]

> > I've put together 3 patches, which do the clock plumbing:
> > https://github.com/nbuchwitz/linux/commits/devel/bcm2711-gisb-clk/
>
> It would be nice to extend this and set the divider based on this to
> give 2.5Mhz, as required by 802.3, as the default. Allow boards to
> override this using the clock-frequency property.

Sure, as a net-next follow-up once James's clock lookup is in, plus a
binding tweak since it currently promises hardware defaults?

Only BCM2711 would notice for now, 10 MHz down to 2.5. Both Pi PHYs do
12.5 MHz and the slower bus mainly hurts the PTP path, so I'd set
clock-frequency = <10000000> in bcm2711-rpi.dtsi to keep what the
boards do today. Florian, ok?

Thanks,
Nicolai