net: mimxrt1170_evk_cm7: 100M: phy does not work well tx/rx timeout

[hakehuang]

Describe the bug

mimxrt1170_evk_cm7 100M enet does not work. tx/rx timeout

Please also mention any information which could help others to understand
the problem you're facing:

• What target platform are you using?
• mimxrt1170_evk_cm7
• What have you tried to diagnose or workaround this issue?
• git bisect
• Is this a regression? If yes, have you been able to "git bisect" it to a
  specific commit?

e9047431526e9a738a60f669a1a075b4656f8945 is the first bad commit
commit e9047431526e9a738a60f669a1a075b4656f8945
Author: Declan Snyder <declan.snyder@nxp.com>
Date:   Fri Oct 4 16:46:24 2024 -0500

    ethernet: phy_mc_ksz8081: Don't reset in cfg link

    No need to reset in cfg link, this was blocking system workqueue during
    phy callbacks that call cfg link, since this happens from monitor work
    handler which is in the system workqueue.

    Signed-off-by: Declan Snyder <declan.snyder@nxp.com>

 drivers/ethernet/phy/phy_microchip_ksz8081.c | 6 ------
 1 file changed, 6 deletions(-)

To Reproduce

west update
west build -b mimxrt1170_evk/mimxrt1176/cm7 samples/net/dhcpv4_client/ -p always
west flash --runner=linkserver --probe="JTAQCQAR"

console log

*** Booting Zephyr OS build v3.7.0-4110-ge9047431526e ***
[00:00:02.912,000] <inf> net_dhcpv4_client_sample: Run dhcpv4 client
[00:00:02.913,000] <inf> net_dhcpv4_client_sample: Start on ethernet: index=1
uart:~$ net iface

Interface eth0 (0x80000d60) (Ethernet) [1]
===================================
Link addr : 02:04:9F:8D:05:5C
MTU       : 1500
Flags     : AUTO_START,IPv4
Device    : ethernet (0x3001f650)
Ethernet capabilities supported:
        TX checksum offload
        RX checksum offload
        10 Mbits
        100 Mbits
        MAC address filtering
Ethernet PHY device: phy@0 (0x3001f63c)
Ethernet link speed: 100 Mbits full-duplex
IPv4 unicast addresses (max 1):
        <none>
IPv4 multicast addresses (max 2):
        224.0.0.1
IPv4 gateway : 0.0.0.0
DHCPv4 lease time : 0
DHCPv4 renew time : 0
DHCPv4 server     : 0.0.0.0
DHCPv4 requested  : 0.0.0.0
DHCPv4 state      : selecting
DHCPv4 attempts   : 1
uart:~$ net iface

Interface eth0 (0x80000d60) (Ethernet) [1]
===================================
Link addr : 02:04:9F:8D:05:5C
MTU       : 1500
Flags     : AUTO_START,IPv4
Device    : ethernet (0x3001f650)
Ethernet capabilities supported:
        TX checksum offload
        RX checksum offload
        10 Mbits
        100 Mbits
        MAC address filtering
Ethernet PHY device: phy@0 (0x3001f63c)
Ethernet link speed: 100 Mbits full-duplex
IPv4 unicast addresses (max 1):
        <none>
IPv4 multicast addresses (max 2):
        224.0.0.1
IPv4 gateway : 0.0.0.0
DHCPv4 lease time : 0
DHCPv4 renew time : 0
DHCPv4 server     : 0.0.0.0
DHCPv4 requested  : 0.0.0.0
DHCPv4 state      : selecting
DHCPv4 attempts   : 5

Expected behavior

[00:00:03.411,000] <inf> phy_mc_ksz8081: PHY 0 is up
[00:00:03.411,000] <inf> phy_mc_ksz8081: PHY (0) Link speed 100 Mb, full duplex

*** Booting Zephyr OS build v3.7.0-4109-gf90b1caae4f9 ***
[00:00:03.412,000] <inf> net_dhcpv4_client_sample: Run dhcpv4 client
[00:00:03.413,000] <inf> net_dhcpv4_client_sample: Start on ethernet: index=1
[00:00:11.423,000] <inf> net_dhcpv4: Received: 192.168.1.230
[00:00:11.423,000] <inf> net_dhcpv4_client_sample:    Address[1]: 192.168.1.230
[00:00:11.423,000] <inf> net_dhcpv4_client_sample:     Subnet[1]: 255.255.255.0
[00:00:11.423,000] <inf> net_dhcpv4_client_sample:     Router[1]: 192.168.1.1
[00:00:11.423,000] <inf> net_dhcpv4_client_sample: Lease time[1]: 43200 seconds

Impact

100M function

Environment (please complete the following information):

• OS: (e.g. Linux)
• Toolchain (e.g Zephyr SDK, ...): 0.17.0-rc1
• Commit SHA or Version used: v3.7.0-4578-g829c03bcdca

Additional context

1G port is ok, mimxrt1060_evk is ok as well. this only happens on rt1170_evk 100M port