FreeBSD/RockPro64 experience

[Milan Obuch]

Hi,

today I had an opportunity to check $subject configuration for a while.
I downloaded from ftp.freebsd.org file I put on uSD card -
FreeBSD-13.0-CURRENT-arm64-aarch64-ROCKPRO64-20201029-b9403d7aae8.img

Using serial console, I was able to see the whole boot process, just
one small observation - at the beginning, there is short notice from
BL31:

NOTICE:  BL31: v2.3():
NOTICE:  BL31: Built : 06:52:32, Oct 29 2020

which is sent over wire at 115200 bps (or 115.2 kpbs if you prefer),
then speed is switched to 1500000 bps (or 1.5 Mbps, put the other way).

First lines:

U-Boot TPL 2020.07 (Oct 29 2020 - 06:56:20)
Channel 0: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=16/15 CS=1 Die BW=16 Size=2048MB
Channel 1: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=16/15 CS=1 Die BW=16 Size=2048MB
256B stride
256B stride
lpddr4_set_rate: change freq to 400000000 mhz 0, 1
lpddr4_set_rate: change freq to 800000000 mhz 1, 0
Trying to boot from BOOTROM
Returning to boot ROM...

It looks to me this BL31 notice is put there only on power up, but I
still think it would be better if speed is not switched. Other than
that, this board looks working quite well out of the box, just suitable
uSD card needs to be put in.

Regards,
Milan