Armbianmonitor: http://ix.io/3RW0 I'm using a NanoPi Neo as Homegear gateway. This requires the SPI interface (/dev/spidev0.0). Yesterday I ran apt-get upgrade, which bumped my kernel from 5.10.60 to 5.15.25. No other changes have been done, Since then no SPI devices are created anymore and the gateway fails! I tried to downgrade the kernel already using armbian-config to 21.08 5.10.60-sunxi. But that reported an error (do not remember the text; was very late) and left the Nano unbootable. I could restore the 5.15.25 kernel by manually editing the zImage symbolic link in /boot. Using param_spidev_spi_bus=1 instead of 0 does not help. What can I do now to re-enable SPI? Downgrade the kernel manually? But 5.10.60 is not offered in the repos...

Doing what is explained in this post make it to work but spidev isn't anymore controlled through /boot/armbianEnv.conf file but the DT. I used the "quick and dirty" fix for now by using "rohm,dh2228fv" which is already in the spidev_dt_ids[] list and avoid me creating a new build with a patch to modify drivers/spi/spidev.c So basically, I used armian-config to edit the Device Tree (System => Dtc), Browse the DT over soc => spi@1c68000 And I added these lines : spi@1c68000 { ... spidev@0x00 { compatible = "rohm,dh2228fv"; spi-max-frequency = <100000000>; reg = <0x00>; }; } And the same for the second SPI controller : spi@1c69000 { ... spidev@0x00 { compatible = "rohm,dh2228fv"; spi-max-frequency = <100000000>; reg = <0x00>; }; } I also had to remove the spidev stuff from /boot/armbianEnv.conf (No spi-spidev overlay) This way, I get two SPI devices and the SBC is working again with 5.15 kernel : # ls /dev/ | grep spi spidev0.0 spidev1.0

5.15.25 breaks SPI on NanoPi Neo and does not create /dev/spidev0.0

NanoPi NEO

By mdrmdr
March 11, 2022 in Allwinner sunxi

https://forum.armbian.com/topic/20033-51525-breaks-spi-on-nanopi-neo-and-does-not-create-devspidev00/

Followers 9

Go to solution Solved by Falcounet, April 2, 2022

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.