[PATCH net-next] net: stmmac: dwmac-rk: enable the reference clock for output mode

[Jiaxing Hu]

Hi Maxime,

> So the statement "For RGMII, it must be input [...]" is now incorrect :
>  - it can be output for RGMII
>  - it will be 25Hz if set to output, from what I get from the commit log.
>
> Can you update it ?

Done in v2, added as patch 1:

  https://lore.kernel.org/all/20260717065933.2629501-1-gahing@gahingwoo.com/

It rewords clock_in_out so that for RGMII, "output" means the SoC drives
a 25 MHz reference out to a crystal-less PHY. The driver change is now
patch 2 of the same series.

Thanks,
Jiaxing