Re: port-arm/60193: olimex a64 - no carrier with emac0 ethernet

["Manuel Bouyer via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR port-arm/60193; it has been noted by GNATS.

From: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-arm-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost
Subject: Re: port-arm/60193: olimex a64 - no carrier with emac0 ethernet
Date: Fri, 17 Apr 2026 12:50:20 +0200

 On Thu, Apr 16, 2026 at 06:50:01AM +0000, nia%pkgsrc.org@localhost via gnats wrote:
 > NetBSD arm64 11.99.5 NetBSD 11.99.5 (GENERIC64) #0: Wed Apr 15 16:10:35 UTC 2026  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/evbarm/compile/GENERIC64 evbarm
 > >Description:
 > The device is never able to get a carrier, but is fully functional on
 > Olimex's official Linux image.
 > 
 > Starting dhcpcd.
 > dhcpcd-10.3.1 starting
 > DUID 00:01:blah
 > emac0: waiting for carrier
 > emac0: carrier acquired
 > emac0: IAID aa:blah
 > emac0: adding address fe80::d7a0:425e:74e4:eb0e
 > emac0: carrier lost - roaming
 > timed out
 
 > $ ifconfig
 > emac0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
 >         capabilities=0x3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx>
 >         capabilities=0x3f00<UDP4CSUM_Rx,UDP4CSUM_Tx>
 >         enabled=0
 >         ec_capabilities=0x1<VLAN_MTU>
 >         ec_enabled=0
 >         address: 02:ba:xx:xx:xx:xx
 >         media: Ethernet autoselect (none)
 >         status: no carrier
 >         inet6 fe80::d7a0:425e:74e4:eb0e%emac0/64 flags 0x8<DETACHED> scopeid 0x
 
 FWIW, I see the same issue with NetBSD 10.0.
 At boot the media is properly detected, but bringing the interface up causes
 it to loose the media:
 # ifconfig
 emac0: flags=0x8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
         capabilities=0x3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx>
         capabilities=0x3f00<UDP4CSUM_Rx,UDP4CSUM_Tx>
         enabled=0
         ec_capabilities=0x1<VLAN_MTU>
         ec_enabled=0
         address: 02:ba:a8:c8:fe:86
         media: Ethernet autoselect (1000baseT full-duplex)
         status: active
 lo0: flags=0x8048<LOOPBACK,RUNNING,MULTICAST> mtu 33624
         status: active
 # ifconfig emac0 up
 # ifconfig         
 emac0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         capabilities=0x3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx>
         capabilities=0x3f00<UDP4CSUM_Rx,UDP4CSUM_Tx>
         enabled=0
         ec_capabilities=0x1<VLAN_MTU>
         ec_enabled=0
         address: 02:ba:a8:c8:fe:86
         media: Ethernet autoselect (none)
         status: no carrier
         inet6 fe80::ba:a8ff:fec8:fe86%emac0/64 flags 0x8<DETACHED> scopeid 0x1
 lo0: flags=0x8048<LOOPBACK,RUNNING,MULTICAST> mtu 33624
         status: active
 
 -- 
 Manuel Bouyer <bouyer%antioche.eu.org@localhost>
      NetBSD: 26 ans d'experience feront toujours la difference
 --