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Im trying to change buffer size for SPI communication for RPi with Ubuntu 22.04 LTS. There is no /boot/cmdline.txt. I have added line

options spidev bufsiz=8192

to /etc/modprobe.d/spidev.conf but it didnt work. Any suggestions on how to do it?

1 Answer 1

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Turns out on ubuntu file cmdline.txt is located at /boot/firmware/cmdline.txt editing this file changes spi buffer size.

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  • This is the same location as the current Rpi OS version ("bookworm").
    – goldilocks
    Commented Mar 22 at 16:20

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