Orange Pi 5 - PWM and SPI no longer working after upgrade to 8.22

Troubleshooting
1

Creating a bug report/issue

Required Information

  • DietPi version | G_DIETPI_VERSION_CORE=8
    G_DIETPI_VERSION_SUB=22
    G_DIETPI_VERSION_RC=3
    G_GITBRANCH=‘master’
    G_GITOWNER=‘MichaIng’
  • Distro version | bookworm
  • Kernel version | Linux DietPi 5.10.160-legacy-rk35xx #1 SMP Mon Aug 28 01:21:24 UTC 2023 aarch64 GNU/Linux
  • Architecture | arm64
  • SBC model | Orange Pi 5 (aarch64)
  • Power supply used | 5V4A RPI
  • SD card used | SanDisk ultra

Additional Information (if applicable)

  • Software title | DietPi
  • Upgrade from 8.21 to 8.22

Steps to reproduce

On 8.21 I manually added overlays to /boot/dietpiEnv.txt:

overlays=opi5-spi4-m0-cs1-spidev opi5-pwm15-m2

After a reboot, PWM and SPI were working as expected.

Then I upgraded DietPi from 8.21 to 8.22 and PWM and SPI stopped working.

Expected behaviour

With the overlays in /boot/dietpiEnv.txt , PWM and SPI should still work

Actual behaviour

PWM and SPI don’t work.

The PWM and SPI resources no longer exist after the upgrade:
/sys/class/pwm/pwmchip15 → doesn’t exist anymore after upgrade
/dev/spidev4.1 → doesn’t exist anymore after upgrade

Extra details

I tried to fix /boot/dietpiEnv.txt after I’ve spotted this issue: No HDMI output after 8.21.1 update on Orange Pi 5
But I wasn’t able to fix the problem.

Thanks in advance for your help.

Cheers, Mauri

2

maybe a kernel update that was done in parallel? Do you know which packages got updated?

3

I was finally able to solve the problem myself. It might have been a kernel update, but I’m not sure.
Unfortunately my knowledge is not that deep in Linux.
Isn’t the DietPi version related (coupled) to the kernel version? Is a kernel update possible without updating DietPi?

Anyway, the solution was to update /boot/dietpiEnv.txt as follows:

rootdev=UUID=[myuuid]
rootfstype=ext4
# The init system logs to the console defined last.
consoleargs=console=tty1
usbstoragequirks=
extraargs=net.ifnames=0
docker_optimizations=on
overlay_path=rockchip
overlay_prefix=rk3588
overlays=spi4-m0-cs1-spidev pwm15-m2
user_overlays=

So overlays changed from opi5-spi4-… to spi4-… (the opi5- prefix got removed).
The same for pwm: opi5-pwm15-… → pwm15-…

After a reboot, pwm15-m2 appears here:

/sys/class/pwm/pwmchip2

I would like to add configuration of spi, pwm and i2c to dietpi-config.
I have developer skills but not specific to Linux.
So could anyone give me some hints/advises on how to add spi, pwm and i2c configuration to dietpi-config?

Thanks and kind regards, Mauri

4

DietPi version is not related to a kernel version. For most of SBC we don’t do one kernel development and use different kernel depending on SBC. Could be vendor kernel, Armbian or others.

Usually they will be updated running apt upgrade, which we trigger automatically before applying our DietPi update.