Hi! Many thanks for your response, but unfortunately we're receiving the same error.
I was already using the config file as suggested from the resource you provided, but still the compilation does not build the device trees RPi4 needs. So I compiled the official kernel source [1] (I tried with 5.15.45 [1] and .44 [2]) to have the correct overlays. Then, I installed the Xenomai modules and copied the Xenomai kernel. Still, I'm receiving the same error from my previous email and cannot enable the SPI. I noticed the same error after compiling [3], thinking it was the right .44 kernel for RPi4. I don't know if it can be helpful. Davide [1] https://github.com/raspberrypi/linux [2] https://github.com/raspberrypi/linux/tree/ea7fe1b21ea73146b1d49ac5f554fbd0ac5de9de , "Merge remote-tracking branch 'stable/linux-5.15.y' into rpi-5.15.y" [3] https://github.com/raspberrypi/linux/tree/4e67be407725b1d8b829ed2075987037abec98ec , "Linux 5.15.44" Il giorno gio 9 giu 2022 alle ore 13:50 Philippe Gerum <[email protected]> ha scritto: > > > Davide Valeri <[email protected]> writes: > > > Hi! > > We need your help once more. > > We cannot enable SPI in the built kernel. Neither "sudo raspi-config" > > nor manually editing "config.txt" worked. > > > > Using "raspi-config" results in > > "mount: /config/device-tree: mount point does not exist > > * Failed to mount configfs - 2" > > > > Commit linux-evl: 81e5b7be. > > > > We're using the bcm2711_defconfig provided by [1]. > > We tried the kernel from the repository in [1] and we were able to enable > > SPI. > > > > Do you experience something like this? > > > > Davide Valeri > > > > [1] > > https://github.com/raspberrypi/linux/blob/rpi-5.15.y/arch/arm64/configs/bcm2711_defconfig > > (commit: 9b573727) > > This is not an EVL issue. Google has a match for this it seems: > https://forums.gentoo.org/viewtopic-t-1104786-start-0.html > > -- > Philippe.
