[U-Boot] [PATCH v2 3/4] dm: net: macb: Implement link speed change callback

[Joe Hershberger]

On Wed, May 22, 2019 at 2:12 AM Bin Meng <bmeng.cn at gmail.com> wrote:
>
> At present the link speed change callback is a nop. According to
> macb device tree bindings, an optional "tx_clk" is used to clock
> the ethernet controller's TX_CLK under different link speed.
>
> In 10/100 MII mode, transmit logic must be clocked from a free
> running clock generated by the external PHY. In gigabit GMII mode,
> the controller, not the external PHY, must generate the 125 MHz
> transmit clock towards the PHY.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>