[EXT] Re: [PATCH v5 3/3] ARM: imx6plus: optionally enable internal routing of clk_enet_ref

[Fabio Estevam]

On Mon, Jul 6, 2020 at 2:30 AM Andy Duan <fugang.duan at nxp.com> wrote:
>
> From: Sven Van Asbroeck <thesven73 at gmail.com> Sent: Sunday, July 5, 2020 11:34 PM
> >
> >   ext phy---------| \
> >                   |  |
> >   enet_ref-o------|M |----pad------| \
> >            |      |_/              |  |
> >            |                       |M |----mac_gtx
> >            |                       |  |
> >            o-----------------------|_/
> >
> >
> > How do we tell the clock framework that clk_pad has a mux that can be
> > connected to _any_ external clock? and also enet_ref?
>
> The clock depends on board design, HW refer guide can describe the clk
> usage in detail and customer select one clk path as their board design.
>
> To make thing simple, we can just control the second "M" that is controlled
> by gpr bit.

Would it make sense to use compatible = "mmio-mux"; like we do on
imx7s, imx6qdl.dtsi and imx8mq.dtsi?