To add this repository to your existing sources list, download and copy the ti-debpkgs.sources file to /etc/apt/sources.list.d/.
Make sure to replace Suites with your host's suite.
wget https://raw.githubusercontent.com/TexasInstruments/ti-debpkgs/main/ti-debpkgs.sources
# edit the Suites in ti-debpkgs.sources if required
sudo cp ti-debpkgs.sources /etc/apt/sources.list.d/