no-OS reference driver for AD7091R-4 ADC

Hi,

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?

Thanks,

Tim Tang