Orange Pi Zero Plus uses a Realtek RTL8211E RGMII Gigabit PHY, but its
currently set to plain RGMII mode meaning that it doesn't introduce
delays.
With this setup, TX packets are completely lost and changing the mode to
RGMII-ID so the PHY will add delays internally fixes the issue.
It looks like this got broken in 5.10 as the PHY RGMII config got fixed
due to datasheet being available and a lot of boards got broken by that.
This has already been sent upstream and received multiple reviews.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Specification:
CPU: Allwinner H5, Quad-core Cortex-A53
DDR3 RAM: 512MB
Network: 10/100/1000M Ethernet x 2
USB Host: Type-A x 1
MicroSD Slot x 1
MicroUSB: for power input
Debug Serial Port: 3Pin pin-header
LED: WAN, LAN, SYS
KEY: Reset
Power Supply: DC 5V/2A
Installation:
Write the image to SD Card with dd.
Note:
1. OpenWrt currently does not support LED_FUNCTION, change back to the
previous practice (Consistent with NanoPi R1).
2. Since the upstream commit https://github.com/torvalds/linux/bbc4d71
("net: phy: realtek: fix rtl8211e rx/tx delay config"), we need to
change the phy-mode from rgmii to rgmii-id.
So set phy-mode for 5.4 and 5.10 respectively.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
