Hello,
I have bought two sets of imx8qmmek evm board, each assembed with the base board and IMX-RMII-BRPHY accessory board. and i connected the 'sel' and "mast/slv" pins on one IMX-RMII-BRPHY board, another one left the two pin disconnected. finally, the two board connected by the auto ethernet cable.
As for software, i have made the 5.4.24 version linux system by yocto project for testing.
If i used the default dtb "imx8qm-mek-rpmsg.dtb" in two boards, the two board eth0 setted as "192.168.8.99" and "192.168.8.99" , but they can't pass the ping checking like below.
rtt min/avg/max/mdev = 0.040/0.060/0.099/0.020 ms
root@imx8qmmek:~# ping 192.168.8.99
PING 192.168.8.99 (192.168.8.99) 56(84) bytes of data.
From 192.168.8.88 icmp_seq=1 Destination Host Unreachable
From 192.168.8.88 icmp_seq=2 Destination Host Unreachable
From 192.168.8.88 icmp_seq=3 Destination Host Unreachable
From 192.168.8.88 icmp_seq=4 Destination Host Unreachable
From 192.168.8.88 icmp_seq=5 Destination Host Unreachable
From 192.168.8.88 icmp_seq=6 Destination Host Unreachable
From 192.168.8.88 icmp_seq=7 Destination Host Unreachable
From 192.168.8.88 icmp_seq=8 Destination Host Unreachable
If the "imx8qm-mek-enet2-tja1100.dtb" was used, when I ran the "ifconfig eth1 up" or "ifconfig eth0 up"
There were messages showed as follwoing.
root@imx8qmmek:~# ifconfig eth1 up
[ 46.540894] fec 5b050000.ethernet eth1: Unable to connect to phy
SIOCSIFFLAGS: No such device
root@imx8qmmek:~# ifconfig eth0 up
[ 49.880889] fec 5b040000.ethernet eth0: Unable to connect to phy
[ 49.891723] arm-smmu 51400000.iommu: Unhandled context fault: fsr=0x402, iova=0xff4036c0, fsynr=0x1a0013, cbfrsynra=0x852, cb=1
SIOCSIFFLAGS: No such device
Please give me some advise to check the auto ethernet board function.
Thanks in advance!
TaoTao Wang
