Add the device-tree binding documentation for the Rohm BM92TXX family
of USB Type-C and Power Delivery controllers. The device is controlled
over I2C and signals state changes through a dedicated interrupt line.
Document the rohm,* properties consumed by the driver: the optional
VCONN-enable GPIO, the DisplayPort alternate-mode toggles
(rohm,dp-disable, rohm,dp-alerts-enable, rohm,dp-signal-toggle-on-resume,
rohm,dp-lanes), the suspend/dock tunables (rohm,led-static-on-suspend,
rohm,dock-power-limit-disable) and the four
rohm,pd-{5,9,12,15}v-current-limit-ma per-PDO charging current limits.
A graph port is required to link the controller to a USB role switch
consumer.
Signed-off-by: Alexandre Hamamdjian <azkali.limited@gmail.com>
Alexandre Hamamdjian
e3d103cf3e