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

Hi Florian

On 16.10.2026 00:12, Florian Fainelli wrote:

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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.

Regarding the choice of the GISB clock to feed it into the MDIO clock input, that's something for Raspberry Pi to comment on because I vividly remember we did something different for 7211 and used a 250MHz clock in the interest of being identical to the other STB chips. Your changes do look correct however.

I received feedback from RPi today regarding the GISB clock, and they confirmed my theory. I’ll therefore send the clock patches soon.

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Cheers
Nicolai