Date: Thu, 23 Feb 2017 15:35:20 -0800 From: "Tony Hain" <tony@tndh.net> To: <freebsd-arm@freebsd.org> Subject: BBG cpsw0 - attach returned 6 Message-ID: <190501d28e2d$7fe014b0$7fa03e10$@tndh.net>
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The BBG phy works with the debian image on mmcsd1: Linux beaglebone 4.4.9-ti-r25 #1 SMP Thu May 5 23:08:13 UTC 2016 armv7l ... debian@beaglebone:~$ ifconfig eth0 Link encap:Ethernet HWaddr 88:4a:ea:f5:a2:0e ... debian@beaglebone:~$ sudo ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=55 time=10.3 ms But failed in FreeBSD 12.0-CURRENT #0 r314118M: Wed Feb 22 22:49:19 PST 2017 BBG # dmesg|grep cpsw cpswss0: <3-port Switch Ethernet Subsystem> mem 0x4a100000-0x4a1007ff,0x4a101200-0x4a1012ff irq 38,39,40,41 on simplebus0 cpswss0: CPSW SS Version 1.12 (0) cpswss0: Initial queue size TX=128 RX=384 cpsw0: <Ethernet Switch Port> on cpswss0 cpsw0: Failed to read from PHY. cpsw0: attaching PHYs failed device_attach: cpsw0 attach returned 6 I used the BBG dts as the base since I didn't care about the HDMI, and the loader.conf fdt_file points to the appropriate name, even though the files are identical at this point: # diff /boot/dtb/am335x-boneblack.dtb /boot/dtb/am335x-bonegreen.dtb # BBG # grep fdt /boot/loader.conf #fdt_file="am335x-boneblack.dtb" fdt_file="am335x-bonegreen.dtb" BBB # grep fdt /boot/loader.conf fdt_file="am335x-boneblack.dtb" #fdt_file="am335x-bonegreen.dtb" The BBB Ethernet works fine. BBB # dmesg|grep cpsw cpswss0: <3-port Switch Ethernet Subsystem> mem 0x4a100000-0x4a1007ff,0x4a101200-0x4a1012ff irq 38,39,40,41 on simplebus0 cpswss0: CPSW SS Version 1.12 (0) cpswss0: Initial queue size TX=128 RX=384 cpsw0: <Ethernet Switch Port> on cpswss0 miibus0: <MII bus> on cpsw0 cpsw0: Ethernet address: b0:d5:cc:fb:f6:c6 cpsw0: link state changed to DOWN cpsw0: link state changed to UP # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: icmp_seq=0 ttl=55 time=10.319 ms remote refid st t when poll reach delay offset jitter oPPS(0) .PPS. 0 l 15 32 377 0.0000 -1.2604 0.0001 xNMEA(0) .GPS. 0 l 54 64 377 0.0000 -50.4108 2.0103 *2001:470:xxxx:7 .GPS. 1 u 15 64 377 0.9646 -1.3970 0.9580 ntpd ntpsec-0.9.6+536 2017-02-22T20:26:50Z Last update: 2017-02-23T12:42:30 (16) When I did the boot to debian on the BBG, I forgot to pull the sd card, and debian's fsck trashed the mmcsd0 system partition. When I recopied it back I forgot to change the loader.conf and rc.conf, and the cpsw device was recognized: BBG # dmesg|grep cpsw cpswss0: <3-port Switch Ethernet Subsystem> mem 0x4a100000-0x4a1007ff,0x4a101200-0x4a1012ff irq 38,39,40,41 on simplebus0 cpswss0: CPSW SS Version 1.12 (0) cpswss0: Initial queue size TX=128 RX=384 cpsw0: <Ethernet Switch Port> on cpswss0 miibus0: <MII bus> on cpsw0 cpsw0: Ethernet address: 88:4a:ea:f5:a2:0e cpsw0: link state changed to DOWN cpsw0: link state changed to UP Just to make sure there was not something about the name I reset it back to fdt_file=am335x-bonegreen.dtb and the correct rc.conf, and all is well. # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: icmp_seq=0 ttl=55 time=10.790 ms Appears to have been a transient issue, though it could have been some hardware state that was cleared by the debian boot. But that doesn't make sense given the number of power cycles. Is there something I should do to further diagnose this issue if it occurs again? Tony
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