Ok. I got the device and I loaded Debian image M5_CoreMP135_debian12_20240628 from
https://docs.m5stack.com/en/guide/linux/coremp135/image
It did boot.
However, upon boot it didn't resize the root partition to occupy whole SD card.
As a result I can't install anything because there is no space.
I had to use fdisk to resize /root partition (#5 for me, making sure I use same starting block and preserve filesystem type, see https://askubuntu.com/questions/24027/how-can-i-resize-an-ext-root-partition-at-runtime) and then
resisz2fs command (something like resize2fs /dev/mmcblk0p5).
It would be too hard for an average user to repeat that.
Also the kernel on it is very old. 5.15.118
On Raspberry Bookworm it is much newer. (6.x)
There are many errors related to USB reported by dmesg.
I have powered USB HUB and keyboard is connected via it.
Keyboard works though.
Is it possible for next versions to have image which would resize to SD card size?
Same way as Pi OS does?
Is it possible to have have newer linux kernel? I think USB errors might be related to old version of it.
Thanks