OrangePi+2E failure FreeBSD 20171202

... dmesg ...
usbus7 on ohci3
gpioc0: ...
am_wdog0: ...
pcm0: <Allwinner Audio Codec> ...
Fatal kernel mode data abort: 'Translation Fault (L1)' on read
trapframe: 0xc0c13ba0
FSR=00000005, FAR=00000004, spsr=600000d3
r0 =daf73700, r1 =00000000, r2 =00000080, r3 =00000000
r4 =daf73700, r5 =c6cf2500, r6 =daf73700, r7 =00000000
r8 =00000007, r9 =00000000, r10=ffffffff, r11=c0c13c50
r12=daf73700, ssp=c0c13c30, slr=c05929fc, pc =c0592b0c

[ thread pid 0 tid 100000 ]
Stopped at h3_pr_set_clear+0x20: ldmib r1, {r0-r1}

db> t
[db stuff itself]
exception_exit
h3_mixer_init+0x58
h3_mixer_init+0x58
mixer_obj_create+0x144
mixer_init+0xac
a10codec_attach+0x2fc
device_attach+0x4ec
device_probe_and_attach+0x8c
bus_generic_new_pass+0xe8
bus_generic_new_pass+0xd8
bus_generic_new_pass+0xd8
bus_generic_new_pass+0xd8
bus_generic_new_pass+0xd8
bus_set_pass+0x94
mi_startup+0xfc
btext+0x144