[BPI-R3(mt7986a)] + 2.5G yt8821 phy uboot 下 100/10M ping fail

Banana Pi Router design
1

Hi all

now i am doing work on u-boot on bpi-r3(mt7986a) evb based on GitHub - frank-w/u-boot at 2024-07-bpi

yt8821 2.5G phy connects with mt7986a’s mac1 with 2.5G serdes(mac0 connected with mt7531 switch

chip).

configed phy-mode = “2500base-x”; in dts,

when link up 2.5G/1000M, ping ok, when link up 100M/10M, ping nok.

  1. debug log pls refer to the attached file - uboot 2.5g phy debug issue.txt uboot 2.5g phy debug issue.txt (4.9 KB)

  2. topo

    bpi-r3-8821-topo
    bpi-r3-8821-topo2710×950 43.9 KB

  3. test env

    BPI-R3+2.5G PHY(YT8821)
    BPI-R3+2.5G PHY(YT8821)1252×942 113 KB
    BPI-R3
    BPI-R31252×943 135 KB

thanks your help.

best regards

jie.han