See kernel.org/doc/Documentation/ABI/testing/sysfs-class-typec
In January 31, 2024, Nirav made a statement that the The Framework 16 laptop was using the pd Controller EZ-PD CCG8: “The EZ-PD CCG8 has enabled immense flexibility, not only supporting the latest USB-PD 3.1 standard, but also making our unique Expansion Card system possible, allowing end user customization of ports.” to eenewseurope.