reproduce:
        git checkout acb7500801e98639f6d8c2d796ed9f64cba83d3a
        b4 shazam https://lore.kernel.org/r/20260621-ti-clockdomain-v1-1-e99a56af98ea@gmail.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs