Because typically the USB Type C controller and the USB Host Controller are two completely separate chips and pieces of hardware with no ability to communicate with each other directly since they have completely different goals and implementation details.
So it's up to the host driver to query the Type C controller for orientation status and tell the Host Controller/PHY how to set up its lane muxes to match.
Yes this is the bane of people writing Linux drivers like us, it means we have to coordinate across something like 5 Linux driver subsystems to make all of this worok.
Hector Martin
npub1qk…9azpx
2024-08-26 08:43:03 UTC
in reply to nevent1q…hwct
Author Public Key
npub1qk9x6yrvten3jqyvundn7exggm90fxf9yfarj5eaz25yd7aty8hqe9azpxPublished at
2024-08-26 08:43:03 UTCEvent JSON
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