Overlays do not apply even when selected in armbian-config and then rebooting

[Meestor_X]

find /boot/overlay-user -type f
/boot/overlay-user/pwm.dtbo
/boot/overlay-user/pwm.dts

 

 

So, using the included /boot/dtb/rockchip/overlay/ files like rk3308-b@1.3ghz.dtbo, rk3308-s0-ext-antenna.dtbo and rk3308-sdio@10mhz.dtbo
and my own overlay in /boot/overlay-user/ named pwm.dtbo
The ONLY way it works is this:

(important lines in /boot/armbianEnv.txt):

 

overlay_prefix=rk3308
.
.
.
user_overlays=pwm
overlays=b@1.3ghz s0-ext-antenna sdio@10mhz

 

Edited January 6 by Meestor_X

[Tonydee]

Hi all,
I'm new here, but I know armbian since years ago.
I have a Rock3A and I downloaded the latest Armbian 25.2.3 bookworm, at the first try armbian-config worked.
But after an update I had a problem with armbian-config, I reinstalled this tools that was corrupted.
Here are the problems with Invalid overlay_prefix, and after searching everywhere and doing some tests I found the solution, here it is:

mkdir /boot/dtb/overlay
cp -r /boot/dtb/rockchip/overlay/. /boot/dtb/overlay/.

 

cat /boot/armbianEnv.txt
verbosity=1
bootlogo=false
console=serial
extraargs=cma=256M
overlay_prefix=rockchip
overlays=rk3568-pwm8-m0-fan
fdtfile=rockchip/rk3568-rock-3a.dtb
rootdev=UUID=194f1dc9-d186-438e-b1fd-064e3e8b1304
rootfstype=ext4
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

 

my files start with overlay_prefix=rockchip, then armbian-config and now your overlays selection works. The folder basically needs to be moved, hopefully that will be done in the next image.
I hope it can be helpful for those who have the same problem.

 

In my case I have not yet solved the fan operation on pwm8, which works with S.O. Radxa.
I also tried to compile the dts downloaded from Armbian, but there must be some problem on the kernel that has not been solved.
If anyone has managed to get the fan to work on the Rock3A connector, I would be grateful for any help1

 

Thanks
Tony

[Igor]

57 minutes ago, Tonydee said:

The folder basically needs to be moved

That is wrong approach as we follow kernel source / standards:

 

and this (boot script) contains the mechanism for loading it:
https://github.com/armbian/build/blob/main/config/bootscripts/boot-rk35xx.cmd

 

It should work:

https://github.com/armbian/build/blob/main/config/bootscripts/boot-rk35xx.cmd#L51-L52

 

Is your image an upgrade from some old one? As we indeed have issues with this at some point.