Programmatically find board revision

[christian w 0]

Hello community

We have been using a good number of tinkerboards for a while, starting with the original R1.x but recently also adding R2.x ones

Now we wonder if we can somehow programmatically figure out (during runtime) what revision we are running our software on.

Is there any way to get at this information? Maybe serial number conventions or some other secret eeprom registers?

Thanks for pointers!

[tooz 47]

hello @christian w, 

to check the hardware version: 

cat /proc/boardinfo and cat /proc/boardver

if you're using the first generation of tinker board that the command above doesn't work, please use this command instead:

cat /proc/board_info

 

to check the os version:

cat /etc/version

 

[christian w 0]

Thanks a lot for this feedback @tooz

On my board there is no /proc/board* node, unfortunately. I think I have a rev1 board here, will check with a rev2 one asap..

I might have to mention that we have a custom OS running on our boards, that's built according to a Yocto receipt

Can you give me a pointer how these /proc entries are being established maybe?

[christian w 0]

I think I found the place:
https://github.com/TinkerBoard/debian_kernel/blob/linux4.4-rk3288-tb/drivers/board-info/board-info.c#L78

But as far as I see this is distinguishing the different board versions, but not the revisions of the board.