I searched the git tree at GitHub - analogdevicesinc/no-OS: Software drivers for systems without OS for the no-OS driver for AD7091R-2/4/8 ADC and I couldn't find it there on any branch. There is a driver called AD7091R, but it doesn't support multiple channels. Could someone please let me know if ADI has such a driver, and where I can find it if it exists?
Unfortunately, the only no-OS driver that exists at this moment for this family is for the single channel version - AD7091R:
Unfortunately, we don't have it. At this moment, we are supporting AD7091R and AD7091R-5 (4 channels but I2C) - Linux Drivers [Analog Devices Wiki].
Thank you very much for the quick response. Do you know if ADI has the Linux driver for AD7091R-4?
Thank you for the update. I'll take a look at the linux driver for AD7091R-5.