On Sat, Aug 31, 2024 at 09:06:54PM -0700, Stephen Boyd wrote: > We can imagine that logically the EC is a device that has some number of > DisplayPort (DP) connector inputs, some number of USB3 connector inputs, > and some number of USB type-c connector outputs. If you squint enough it > looks like a USB type-c dock. Logically there's a crossbar pin > assignment capability within the EC that can assign USB and DP lanes to > USB type-c lanes in the connector (i.e. USB type-c pin configurations). > In reality, the EC is a microcontroller that has some TCPCs and > redrivers connected to it over something like i2c and DP/USB from the AP > is wired directly to those ICs, not the EC. > > [...] > > Cc: Prashant Malani <pmalani@xxxxxxxxxxxx> > Cc: Benson Leung <bleung@xxxxxxxxxxxx> > Cc: Tzung-Bi Shih <tzungbi@xxxxxxxxxx> > Cc: <chrome-platform@xxxxxxxxxxxxxxx> > Cc: Pin-yen Lin <treapking@xxxxxxxxxxxx> > Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> Reviewed-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
