U-Boot atheros PHY support and cubox ethernet

[Fabio Estevam]

Hi Tom,

On Wed, Jun 17, 2020 at 4:00 PM Tom Rini <trini at konsulko.com> wrote:

> Based on your follow-up patches, I think you'll be unsurprised it
> doesn't work.  I get:
> Net:   Could not get PHY for FEC0: addr 0

Now I understand why the PHY could not be found with the patches I sent.

On mx6cubox the AR8035 is clocked from a 25MHz clock coming from the
i.MX6 GPIO16 pin.

My patch incorrectly removed this setting.

> +       int ret = enable_fec_anatop_clock(0, ENET_25MHZ);
> +       if (ret)
> +               return ret;
> +
> +       /* set gpr1[ENET_CLK_SEL] */
> +       setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);

enable_fec_anatop_clock() and GPR1 settings above must remain.

In order to get patch 1 to work (the one that adds the
qca,clk-out-frequency property ) you also need this FEC change:
https://pastebin.com/raw/mcKdwwTs

I hope this helps.