On 25/03/2024 10:42, Christophe Roullier wrote:
> The Linux kernel dwmac-stm32 driver currently supports three DT
> properties used to configure whether PHY clock are generated by
> the MAC or supplied to the MAC from the PHY.
>
> Originally there were two properties, st,eth-clk-sel and
> st,eth-ref-clk-sel, each used to configure MAC clocking in
> different bus mode and for different MAC clock frequency.
> Since it is possible to determine the MAC 'eth-ck' clock
> frequency from the clock subsystem and PHY bus mode from
> the 'phy-mode' property, two disparate DT properties are
> no longer required to configure MAC clocking.
>
> Linux kernel commit
> 1bb694e20839 ("net: ethernet: stmmac: simplify phy modes management for stm32")
Don't wrap. Word commit must be followed by the commit. Syntax is:
commit deadbeef ("foo
bar").
> introduced a third, unified, property st,ext-phyclk. This property
> covers both use cases of st,eth-clk-sel and st,eth-ref-clk-sel DT
> properties, as well as a new use case for 25 MHz clock generated
> by the MAC.
>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Best regards,
Krzysztof
