Hello,
Since I have
opened my pocketbook TL2 to play with the internal SD card, I have no idea why but I wanted to run linux on it.
It is not a straightforward process, incomplete as of today.
Please take a look at the
sunxi page dedicated to the 626 (there are some more details on progress in the "discussion" thumb of the page).
To make it short, I managed to get a modern u-boot on it, and run a custom-built linux kernel (as of today, 4.18.0-rc6). On top of that, I used an Arch Linux userland.
What is working:
not that much... real time clock, led, wifi, ssh, pacman, etc.
What is not working:
display, touch screen , power manager (gets detected but defaults to "regulator-dummy"), external SD card slot, have some usb warnings, etc.
I added a driver for the TPS65185, not properly configured (yet -- hoping), it seems to load ok, but device tree needs some tuning.
Code:
[ 1.041830] tps6518x_probe calling
[ 1.045279] tps6518x 1-0068: no epdc pmic pwrall pin available
Going further is beyond my knowledge.
If someone is interested and can help getting some more stuff working, please let's discuss it here.
If you think it is an easy to do task, remember you have to open the pocketbook, may be solder some wires to get a serial console, and that you will not be able to do much with the system if you get it running.
I have shared more info on the linux-sunxi page, but that is not much, because it involved lots of tries and errors, tinkering, etc. but I will take the time to describe my steps if someone is interested.
I think what I did could be applied to several other models (626 TL3 because it is more or less the same device, 840, may be some more).