On Mon, Oct 19, 2020 at 12:14:29PM +0800, Chen-Yu Tsai wrote:
> The proper fix now is to check the schematics, and change the phy-mode 
> property
> to the correct type. It used to be that we used "rgmii" for all RGMII PHYs.
> 
> Turns out there are  four modes of RGMII, depending on whether the MAC or PHY
> enable TX / RX signal delays.
> 
> Most boards in sunxi are designed so that the PHY is providing both TX and RX
> delays, which is done by pulling up the TXDLY and RXDLY pins at power up.
> 
> The commit "net: phy: realtek: fix rtl8211e rx/tx delay config" fixes the PHY
> driver so that it will correctly "reconfigure" the PHY to the requested mode.
> Previously this was not happening due to incorrect register definitions.
> 
> To summarize, the PHY driver fix exposes errors in our DTs.

The Banana Pi still doesn't work properly in kernel 5.9.6. I am not in
a position to check schematics and to fix DTs.

Look at git log for arch/arm/boot/dts/sun7i-a20-bananapi.dts, that would
be you, Chen-Yu Tsai and Maxime Ripard.

Is there anything I can do to help debugging?

Greetings
Marc

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