[Letux-kernel] LX16/LX20 cgu issue

H. Nikolaus Schaller hns at goldelico.com
Tue Jun 10 08:59:58 CEST 2025


> That makes it work. At least for LX20 (not yet checked if LX16/CI20 are now
> broken).

CI20 still works.

I have now run our /root/cpu-speed and /root/diskspeed tests on CI20 and LX20
(LX16 is still broken) and compared to the PandaES and other devices.

Very interesting:

LX20: 3.157971s, 5.77 MB/sec
CI20: 7.128343s, 11.39 MB/sec
LX16: (does not boot with SMP enabled)
PandaES (OMAP4460): 9.703527s, 20.96 MB/sec
Udoo-neo (i.MX6): 21.036136s, 20.28 MB/sec
PocketBeagle2 (AM6232): 1.659287s, 76.36 MB/sec

So the X2000 processor is 3 times as fast as the OMAP4 and twice as fast as 
the jz4780. And does not get hot at all, contrary to the PocketBeagle2.

Strange is the µSD speed. Here, the ARM systems are much faster. And the LX20
is the slowest. Maybe the µSD clock rate is too limited or calculated badly.

BR,
Nikolaus



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