Choose between Raspberry Pi 4B 4GB and ROCKPro64

[Bernd Walter]

On Tue, Nov 12, 2019 at 08:09:38AM -0700, Klaus Küchemann via freebsd-arm wrote:
> <<The u-boot has to go into the SPI-Flash or on the card? >>
> 
> onto the uSD :
> https://www.freshports.org/sysutils/u-boot-rockpro64/
> Regards 
> Klaus

Thank you.

Do you know the bps rate used by u-boot and later components?
I do see some output at the usual 115200 bps, but it is messed up.
Also tried other typical bps rates, including 1.5Mbps as mentioned
on the RockPro Wiki, but none worked.
I wouldn't rule out that it is the USB uart failing at 1.5M though,
but I've tried a PL2303, CP2102 (which refused 1.5Mbps) and
a CH340.
Unfortunately I don't have an FTDI based TTL one at hands.
It also fails with reading the uartt output when booting an Armbian
image, which as such is booting fine according to the HDMI output.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.