On Thu, 24 Dec 2020 00:29:00 +0100 Martin Blumenstingl wrote:

Hello,

with the help of Jianxin Pan (many thanks!) the meaning of the "new"
PRG_ETH1[19:16] register bits on Amlogic Meson G12A, G12B and SM1 SoCs
are finally known. These SoCs allow fine-tuning the RGMII RX delay in
200ps steps (contrary to what I have thought in the past [0] these are
not some "calibration" values).

Could you repost in a few days? Net-next is still closed:

http://vger.kernel.org/~davem/net-next.html