1 What: /sys/bus/typec/devices/.../displayport/configuration
3 Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
5 Shows the current DisplayPort configuration for the connector.
6 Valid values are USB, source and sink. Source means DisplayPort
7 source, and sink means DisplayPort sink.
9 All supported configurations are listed as space separated list
10 with the active one wrapped in square brackets.
16 The configuration can be changed by writing to the file
18 Note. USB configuration does not equal to Exit Mode. It is
19 separate configuration defined in VESA DisplayPort Alt Mode on
20 USB Type-C Standard. Functionally it equals to the situation
21 where the mode has been exited (to exit the mode, see
22 Documentation/ABI/testing/sysfs-bus-typec, and use file
23 /sys/bus/typec/devices/.../active).
25 What: /sys/bus/typec/devices/.../displayport/pin_assignment
27 Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com>
29 VESA DisplayPort Alt Mode on USB Type-C Standard defines six
30 different pin assignments for USB Type-C connector that are
31 labeled A, B, C, D, E, and F. The supported pin assignments are
32 listed as space separated list with the active one wrapped in
39 Pin assignment can be changed by writing to the file. It is
40 possible to set pin assignment before configuration has been
41 set, but the assignment will not be active before the
42 connector is actually configured.
44 Note. As of VESA DisplayPort Alt Mode on USB Type-C Standard
45 version 1.0b, pin assignments A, B, and F are deprecated. Only
46 pin assignment D can now carry simultaneously one channel of
47 USB SuperSpeed protocol. From user perspective pin assignments C
48 and E are equal, where all channels on the connector are used
49 for carrying DisplayPort protocol (allowing higher resolutions).