MMCCAM hang

Hi,

sdhci_fsl_fdt0: Desired SD/MMC freq: 50000000, actual: 50000000; base 700000000 prescale 1 divisor 14
GEOM: new disk sdda0
sdda0 at sdhci_slot0 bus 0 scbus0 target 0 lun 0
sdda0: Relative addr: 00000002
Card features: <MMC Memory High-Capacity>
Card random: unblocking device.
GEOM: new disk sdda0boot0
memory OCR: 00ff8080
sdda0: Serial Number .......
sdda0: MMCHC .................................. by 17 0x0000
GEOM: new disk sdda0boot1
uhub0: 2 ports with 2 removable, self powered

at which point basically anything hangs.  In auto-boot it is
before/during file-system checks.
In single user mode camcontrol devlist will show sdda0
but

root@:/ # gpart show sdda0
load: 6.06  cmd: gpart 24 [g_waitfor_event] 1.28r 0.00u 0.00s 0% 2088k
{forever}


Unclear at which point I broke to debugger and this is where it seems to
hang:

db> trace 100088
Tracing pid 4 tid 100088 td 0xffff0000dc527000
ipi_stop() at ipi_stop+0x34
arm_gic_v3_intr() at arm_gic_v3_intr+0xe4
intr_irq_handler() at intr_irq_handler+0x80
handle_el1h_irq() at handle_el1h_irq+0x14
--- interrupt
spinlock_exit() at spinlock_exit+0x44
callout_reset_sbt_on() at callout_reset_sbt_on+0x210
sdhci_cam_action() at sdhci_cam_action+0x284
xpt_run_devq() at xpt_run_devq+0x4c8
xpt_action_default() at xpt_action_default+0x470
sddastart() at sddastart+0x1bc
xpt_run_allocq() at xpt_run_allocq+0xa8
xpt_done_process() at xpt_done_process+0x610
xpt_done_td() at xpt_done_td+0x1a8
fork_exit() at fork_exit+0x8c
fork_trampoline() at fork_trampoline+0x18


Anyone an idea?

-- 
Bjoern A. Zeeb                                                     r15:7