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Converting a 7i76e config to 7c81/7i76 pair

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3 years 2 months ago #279217 by Cant do this anymore bye all
Replied by Cant do this anymore bye all on topic Converting a 7i76e config to 7c81/7i76 pair
I was under the impression that the hm2-rpspi required a entry in the dev folder for spi and the Hal gpio driver was a different beast.

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3 years 2 months ago #279218 by rodw
Replied by rodw on topic Converting a 7i76e config to 7c81/7i76 pair
I don't know as I have never used any GPIO stuff. Perhaps by the end of the week I will have a working PI image. It is certainly worth testing. If it was still an issue, report it on git and it might get fixed.

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3 years 2 months ago #279225 by acondit
Replied by acondit on topic Converting a 7i76e config to 7c81/7i76 pair
I found the spi-bcm2835.c source in with the kernel source. I will take a look at the possibility of setting spi enable as an option in the kernel configuration.
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3 years 2 months ago #279235 by Cant do this anymore bye all
Replied by Cant do this anymore bye all on topic Converting a 7i76e config to 7c81/7i76 pair
With the debian package linux-image-6.1.0-11-rt-arm64-unsigned_6.1.38-4_arm64.deb spi-bcm2835 is configured as a module.
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3 years 2 months ago #279245 by rodw
Replied by rodw on topic Converting a 7i76e config to 7c81/7i76 pair

With the debian package linux-image-6.1.0-11-rt-arm64-unsigned_6.1.38-4_arm64.deb spi-bcm2835 is configured as a module.
Does that mean you have been chasing a red herring?

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3 years 2 months ago - 3 years 2 months ago #279252 by Cant do this anymore bye all
Replied by Cant do this anymore bye all on topic Converting a 7i76e config to 7c81/7i76 pair
Nah there seems to be an issue with device overlays, which the mainline kernel doesn't seem to support.
Found this bit of info
Code:
For /sys/kernel/config/device-tree/overlays/ you should have a kernel built with CONFIG_OF_CONFIGFS=y (which is not an upstream feature but available in some kernels).
Raspbian kernel config:
Code:
rmurphy@rpi4-cnc:~ $ cat /boot/config-5.15.65-rt49-v8+ | grep "OF_CONFIGFS" CONFIG_OF_CONFIGFS=y rmurphy@rpi4-cnc:~ $

Debian arm64 rt kernel config
Code:
rmurphy@ThinkPad-T530:~/Documents/Kernel/linux-image-6.1.0-11-rt-arm64_6.1.38-4_arm64/boot$ cat config-6.1.0-11-rt-arm64 | grep "OF_CONFIGFS" rmurphy@ThinkPad-T530:~/Documents/Kernel/linux-image-6.1.0-11-rt-arm64_6.1.38-4_arm64/boot$
Last edit: 3 years 2 months ago by Cant do this anymore bye all.

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