1# SPDX-License-Identifier: GPL-2.0 2 3menuconfig TYPEC 4 tristate "USB Type-C Support" 5 help 6 USB Type-C Specification defines a cable and connector for USB where 7 only one type of plug is supported on both ends, i.e. there will not 8 be Type-A plug on one end of the cable and Type-B plug on the other. 9 Determination of the host-to-device relationship happens through a 10 specific Configuration Channel (CC) which goes through the USB Type-C 11 cable. The Configuration Channel may also be used to detect optional 12 Accessory Modes - Analog Audio and Debug - and if USB Power Delivery 13 is supported, the Alternate Modes, where the connector is used for 14 something else then USB communication. 15 16 USB Power Delivery Specification defines a protocol that can be used 17 to negotiate the voltage and current levels with the connected 18 partners. USB Power Delivery allows higher voltages then the normal 19 5V, up to 20V, and current up to 5A over the cable. The USB Power 20 Delivery protocol is also used to negotiate the optional Alternate 21 Modes when they are supported. USB Power Delivery does not depend on 22 USB Type-C connector, however it is mostly used together with USB 23 Type-C connectors. 24 25 USB Type-C and USB Power Delivery Specifications define a set of state 26 machines that need to be implemented in either software or firmware. 27 Simple USB Type-C PHYs, for example USB Type-C Port Controller 28 Interface Specification compliant "Port Controllers" need the state 29 machines to be handled in the OS, but stand-alone USB Type-C and Power 30 Delivery controllers handle the state machines inside their firmware. 31 The USB Type-C and Power Delivery controllers usually function 32 autonomously, and do not necessarily require drivers. 33 34 Enable this configurations option if you have USB Type-C connectors on 35 your system and 1) you know your USB Type-C hardware requires OS 36 control (a driver) to function, or 2) if you need to be able to read 37 the status of the USB Type-C ports in your system, or 3) if you need 38 to be able to swap the power role (decide are you supplying or 39 consuming power over the cable) or data role (host or device) when 40 both roles are supported. 41 42 For more information, see the kernel documentation for USB Type-C 43 Connector Class API (Documentation/driver-api/usb/typec.rst) 44 <https://www.kernel.org/doc/html/latest/driver-api/usb/typec.html> 45 and ABI (Documentation/ABI/testing/sysfs-class-typec). 46 47if TYPEC 48 49source "drivers/usb/typec/tcpm/Kconfig" 50 51source "drivers/usb/typec/ucsi/Kconfig" 52 53config TYPEC_TPS6598X 54 tristate "TI TPS6598x USB Power Delivery controller driver" 55 depends on I2C 56 help 57 Say Y or M here if your system has TI TPS65982 or TPS65983 USB Power 58 Delivery controller. 59 60 If you choose to build this driver as a dynamically linked module, the 61 module will be called tps6598x.ko. 62 63source "drivers/usb/typec/mux/Kconfig" 64 65source "drivers/usb/typec/altmodes/Kconfig" 66 67endif # TYPEC 68