Banana Pi M1 SATA problems

[Peter Jeremy]

I'm trying to get my (new) Banana Pi M1 to talk to a SATA drive.
Unfortunately, something is disabling the SATA port.  According to a
verbose boot (using both the Release 12.1 memstick and a newly built
head at r356414):
ahci0: <Allwinner Integrated AHCI controller> mem 0x1c18000-0x1c18fff irq 25 on simplebus0
ahci0: AHCI v1.10 with 1 3Gbps ports, Port Multiplier not supported
ahci0: quirks=0x2<NOPMP>
ahci0: Caps: NCQ SNTF ALP AL CLO 3Gbps PMD SSC PSC 32cmd CCC 1ports
ahcich0: not probed (disabled)

I haven't explicitly disabled anything.  Running "devctl enable ahcich0"
results in the device probing/attaching but it still won't talk to a HDD.

I've looked at my loader configuration (and kenv), sysctl and u-boot
environment without finding anything obviously wrong.  Does anyone have any
ideas?

-- 
Peter Jeremy
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