acassis opened a new pull request, #20694:
URL: https://github.com/apache/nuttx/pull/20694
## Summary
With CONFIG_ETH0_PHY_MULTI, the YT8512 specific initialization in
imxrt_initphy() was executed for every PHY except the YT8512, because the
imxrt_phy_is() test was inverted. On a LAN8720 it writes to registers 30/31
(interrupt mask and special control/status), clearing the 4B5B enable bit and
breaking 100BASE-TX. Only run it when the detected PHY is a YT8512.
imxrt_phyintenable() returned -ENOSYS for the LAN8720/LAN8742A, so
SIOCMIINOTIFY (used by the NETINIT link monitor) failed on boards using these
PHYs. Enable the link down and auto-negotiation complete interrupts on them,
both when selected at compile time and at run time with CONFIG_ETH0_PHY_MULTI.
## Impact
Users will be able to use other PHYs with iMXRT
## Testing
```
alan@dev:~$ ping 10.10.10.10
PING 10.10.10.10 (10.10.10.10) 56(84) bytes of data.
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=2.76 ms
^C
--- 10.10.10.10 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.761/2.761/2.761/0.000 ms
alan@dev:~$ telnet 10.10.10.10
Trying 10.10.10.10...
Connected to 10.10.10.10.
Escape character is '^]'.
NuttShell (NSH)
nsh> uname -a
NuttX EC300 0.0.0 8be26497-dirty Oct 15 2026 16:04:43 arm ddcnc-ec300
nsh> ?
help usage: help [-v] [<cmd>]
. cp false mkdir set uname
[ cmp fdinfo mkrd kill umount
? dirname free mount pkill unset
alias df help mv sleep uptime
unalias dmesg hexdump pidof usleep watch
arp echo ifconfig printf source xd
basename env ifdown ps test
break exec ifup pwd time
cat exit ls rm true
cd expr du rmdir truncate
Builtin Apps:
dd nsh ping sh telnetd
nsh> ping 10.10.10.1
ping [7:100]
nsh> PING 10.10.10.1 56 bytes of data
56 bytes from 10.10.10.1: icmp_seq=0 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=1 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=2 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=3 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=4 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=5 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=6 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=7 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=8 time=0.0 ms
56 bytes from 10.10.10.1: icmp_seq=9 time=0.0 ms
10 packets transmitted, 10 received, 0% packet loss, time 10100 ms
rtt min/avg/max/mdev = 0.000/0.000/0.000/0.000 ms
nsh>
```
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