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| ikonia | how can I validate the GIO config for i2c and spi | 13:02 |
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| ikonia | just moved my little dev project to ubuntu and before I start dealing with the many failures, I want to make sure the basics are right | 13:03 |
| ikonia | waveform I apprecaite what you said about raspi-config, so I'm not messing with that at this stage | 13:03 |
| ikonia | I assume /boot/config.txt is supported with ubuntu 20.04 (I think someone confirmed this last time I asked) | 13:07 |
| ikonia | (it looks like it's in /boot/firmware/config,txt) | 13:08 |
| waveform | ikonia, yup -- the location on ubuntu is /boot/firmware/config.txt because that's where we mount the boot partition. The one thing to be aware of is that, up to (and including) focal (20.04) u-boot is *also* in the boot sequence so config.txt configures the raspberry pi bootloader, but it *doesn't* configure things like the kernel command line because it's just loading u-boot which then takes over and handles loading the kernel, constructing the | 13:16 |
| waveform | kernel command line etc. From groovy (20.10) onwards the ubuntu boot sequence is much more "traditional" (at least for pis) using just the pi bootloader | 13:16 |
| waveform | as for how you can tell I2C and SPI are loaded -- if /dev/spidev0.* is present then spi=on is active in the base overlay. Likewise if /dev/i2c-1 is present, then i2c_arm=on is active in the base overlay (those devices won't appear otherwise) | 13:18 |
| ikonia | thanks waveform | 13:20 |
| === iyed is now known as iyedonhismed | ||
| === iyed is now known as iyedonhismed | ||
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