path: root/zephyr/Kconfig.usbc

# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# TODO(sjg): Not USB-C: perhaps we should have a 'power' thing at the top level?
config PLATFORM_EC_USB_A_PORT_COUNT
	int "Number of USB-A ports"
	default 0
	help
	  This sets the number of USB-A ports on the device. These ports do
	  not support USB Power Delivery features but can be used to power
	  external devices (according to the USB 3 spec, not the Battery Charger
	  standard) and to charge devices slowly if power is enabled to them.

config PLATFORM_EC_USB_PORT_POWER_DUMB
	bool "Simple control of power to USB-A ports"
	depends on PLATFORM_EC_USB_A_PORT_COUNT > 0
	default y
	help
	  Enable this to provide simple control of the power to USB ports
	  using GPIOs. To use this your board code must provide a
	  usb_port_enable[] array with the GPIOs to use for each port. This
	  implements the EC_CMD_USB_CHARGE_SET_MODE host command and provides
	  a 'usbchargemode' console command.

config PLATFORM_EC_USB_PORT_POWER_DUMB_CUSTOM_HOOK
	bool "Simple control of power to USB-A ports"
	depends on PLATFORM_EC_USB_PORT_POWER_DUMB
	help
	  Enable this if your board does not want to use the default S3 hooks
	  from USB_PORT_POWER_DUMB.

menuconfig PLATFORM_EC_USBC
	bool "USB Type-C"
	default y if PLATFORM_EC_BATTERY
	help
	  Enable this to support various USB Type-C features chosen by the
	  options below. USB-C is widely used on modern Chromebooks and the EC's
	  role is to negotiate power contracts (for sourcing or sinking power
	  over USB). The EC is also responsible for discovering the capabilities
	  of attached USB-C partners and enabling alternate operational modes,
	  including Display Port, Thunderbolt, and USB4.

if PLATFORM_EC_USBC

config PLATFORM_EC_CHARGE_MANAGER
	bool "Charge manager"
	default y
	help
	  The EC charge manager manages charging the battery from all supported
	  power sources.  This includes dedicated charge ports (such as a
	  barrel jack connector), BC1.2 (Battery Charging 1.2) sources, and
	  USB-C sources. When multiple charge sources are connected to a
	  Chromebook simultaneously, the charge manager is responsible for
	  picking the best source.

	  Note that the charge manager assumes that at least one USB-C power
	  source is available on the hardware, so cannot be built without
	  PLATFORM_EC_USBC.

config PLATFORM_EC_CHARGER_INPUT_CURRENT
	int "Charger input current in mA"
	depends on PLATFORM_EC_CHARGE_MANAGER
	default 512
	help
	  This is the default input current for the board in mA.  Many boards
	  also use this as the least maximum input current during transients.

	  This value should depend on external power adapter, designed charging
	  voltage, and the maximum power of the running system. For type-C
	  chargers, this should be set to 512 mA in order to not brown-out
	  low-current USB charge ports in accordance with USB-PD r3.0 Sec. 7.3

menuconfig PLATFORM_EC_BOOT_AP_POWER_REQUIREMENTS
	bool "Power requirements to boot AP"
	default y
	help
	  Power thresholds for AP boot.
	  If one of the following conditions is met, EC boots AP:
	   1. Battery charge >= CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON.
	   2. AC power >= CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON.
	   3. Battery charge >= CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON_WITH_AC
	    and
	    AC power >= CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON_WITH_BATT.

if PLATFORM_EC_BOOT_AP_POWER_REQUIREMENTS

config PLATFORM_EC_CHARGER_MIN_BAT_PCT_FOR_POWER_ON
	int "Minimal battery level to boot AP without AC"
	depends on PLATFORM_EC_BATTERY
	default 3
	help
	  Sets the minimum battery capacity, as a percentage, needed to boot
	  the AP when AC power is not supplied.

config PLATFORM_EC_CHARGER_MIN_BAT_PCT_FOR_POWER_ON_WITH_AC
	int "Minimal battery level to boot AP with AC"
	depends on PLATFORM_EC_BATTERY && PLATFORM_EC_CHARGE_MANAGER
	default 1
	help
	  Sets the minimum battery capacity, as a percentage, needed to boot
	  the AP when AC power is supplied. The AC power supplied must also
	  be greater than CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON_WITH_BATT.

config PLATFORM_EC_CHARGER_MIN_POWER_MW_FOR_POWER_ON_WITH_BATT
	int "Minimal AC power to boot AP with battery"
	depends on PLATFORM_EC_BATTERY && PLATFORM_EC_CHARGE_MANAGER
	default 15000
	help
	  Sets the minimum power, in milliwatts, supplied by an external
	  charger required to boot the AP when the battery capacity is also
	  above CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON_WITH_AC.

config PLATFORM_EC_CHARGER_MIN_POWER_MW_FOR_POWER_ON
	int "Minimal AC power to boot AP without battery"
	depends on PLATFORM_EC_CHARGE_MANAGER
	default 15000
	help
	  Sets the minimum power, in milliwatts, supplied by an external
	  charger requires to boot the AP when no battery is present or
	  under dead battery conditions. If the AP requires greater than
	  15W to boot, check the
	  CONFIG_PLATFORM_EC_CHARGER_LIMIT_POWER_THRESH_CHG_MW setting.

endif # PLATFORM_EC_BOOT_AP_POWER_REQUIREMENTS

config PLATFORM_EC_USBC_OCP
	bool
	help
	  USB-C overcurrent protection: Enable this to detect when a connected
	  USB-C partner draws too much power from the Chromebook and
	  automatically shut off power to the USB-C partner.

	  This should be enabled by drivers which can detect over-current. It
	  cannot be set otherwise, even in prj.conf

config PLATFORM_EC_USB_PID
	hex "USB Product ID"
	help
	  Each platform (e.g. baseboard set) should have a single VID/PID
	  combination. If there is a big enough change within a platform,
	  then we can differentiate USB topologies by varying the hardware
	  version field in the Sink and Source Capabilities Extended messages.

	  To reserve a new PID within Google, use go/usb and see
	  http://google3/hardware/standards/usb

config PLATFORM_EC_USB_BCD_DEV
	hex "USB Device ID"
	default 0
	help
	  This specifies the USB device version, reported by board when acting
	  as the upstream facing port (UFP). This is a 16-bit unsigned integer
	  and should be set to a version number relevant to the release version
	  of the product.

config PLATFORM_EC_USB_VID
	hex "USB Vendor ID"
	default 0x18d1
	help
	  This specifies the USB vendor ID used for boards which expose a
	  USB endpont when the port is in UFP mode. The default value is
	  set to Google's assigned VID and typically would not need to be
	  changed. But, in certain cases this may need to be changed to
	  match an OEM's vendor ID.

config PLATFORM_EC_USBC_RETIMER_INTEL_BB
	bool "Support Intel Burnside Bridge retimer"
	help
	  Enable this to support the Intel Burnside Bridge Thunderbolt / USB /
	  DisplayPort retimer.

	  Intel Burnside Bridge is a Type-C multi-protocol retimer to be used
	  in on-board applications. Burnside Bridge offers the ability to latch
	  protocol signals into on-chip memory before retransmitting them
	  onwards. It can be used to extend the physical length of the system
	  without increasing high-frequency jitter.

	  Burnside Bridge supports spec compliant retimer of following
	  protocols:

	    - Display Port: four unidirectional DP lanes
	    - USB3.1 Gen1/2: one bi-directional USB lane
	    - Thunderbolt: two bi-directional CIO lanes
	    - Multifunction Display (MFD): two unidirectional lanes of DP and
	      one bidirectional lane of USB3.1 Gen1/2

config PLATFORM_EC_USBC_RETIMER_INTEL_BB_RUNTIME_CONFIG
	bool "Use runtime configuration of Intel Burnside Bridge"
	depends on PLATFORM_EC_USBC_RETIMER_INTEL_BB
	default y
	help
	  Enable this to allow run-time configuration of the Burnside Bridge
	  driver structure. This makes the bb_controls[] array writable, i.e.
	  not const. It should be declared as such in the board config.

	  This is useful when the board has runtime information that changes
	  the configuration, such as Chromium OS Board Info (CBI set in the
	  factory. Without this, multiple EC images would need to be installed
	  depending on the board.

config PLATFORM_EC_USBC_RETIMER_ANX7451
	bool "Support Analogix ANX7451 10G Active Mux and Retimer"
	help
	  ANX7451 is a 4x4 re-timing mux capable of switching DisplayPort (DP)
	  and USB3.2 Gen 2 10Gbps signals to support a single USB Type-C port.
	  ANX7451 has built-in re-timers to recover both the USB and DP signals
	  with loss compensation of 23dB for USB and up to 27dB for DP.

config PLATFORM_EC_USBC_RETIMER_PS8811
	bool "Support Parade PS8811 Single Port USB 3.1 Gen 2 10G Retimer"
	help
	  The PS8811 is a one-port bidirectional USB 3.1 Gen 2 retimer that
	  integrates the UniEye equalizer and a retimer to re-condition USB 3.1
	  signals for long media link applications. It supports USB 3.1 Gen 2
	  with operation speed up to 10Gbps as well as Gen 1 operation at 5Gbps.

config PLATFORM_EC_USBC_RETIMER_KB800X
	bool "Enable KB800X retimer"
	help
	  The KB8001 is a Universal Serial Bus (USB) Type-C 40 Gb/s multiprotocol
	  switch and bidirectional Bit-Level Retimer (BLR) which supports:
	    - Display Port: four unidirectional DP lanes
	    - USB3.1 Gen1/2: one bi-directional USB lane
	    - USB4/Thunderbolt: two bi-directional CIO lanes
	    - Multifunction Display (MFD): two unidirectional lanes of DP and
	      one bidirectional lane of USB3.1 Gen1/2

config PLATFORM_EC_KB800X_CUSTOM_XBAR
	bool "Use custom remapping of HSIO XBAR"
	depends on PLATFORM_EC_USBC_RETIMER_KB800X
	default n
	help
	  Enable this to allow using a custom crossbar configuration for the HSIO
	  lanes.

menuconfig PLATFORM_EC_USB_POWER_DELIVERY
	bool "USB Type-C Power Delivery (PD)"
	default y
	select HAS_TASK_PD_C0
	help
	  USB has always provided basic power to an attached peripheral. USB-C
	  PD is part of the USB 3.0 standard and allows a lot more functionality
	  than the basic 500mA @ 5V. It allows negotiating power delivery over
	  the USB cable to select voltages up to 20V with current up to 5A.

	  This option also enables the Type-C Port Manager (TCPM) on the EC. The
	  TCPM deals with the various state changes in the system as devices are
	  plugged and unplugged, as well as changes in power requirements from
	  those devices.

if PLATFORM_EC_USB_POWER_DELIVERY

config PLATFORM_EC_USB_PD_HOST_CMD
	bool "Host commands related to USB Power Delivery"
	default y
	help
	  This enables host commands which allow finding out the capabilities
	  of USB PD, checking is status and controlling how it operates. For
	  devices which support firmware update, this is provided as well,
	  with the firmware being sent from the AP.

config PLATFORM_EC_USB_PD_PORT_MAX_COUNT
	int "Maximum number of USB PD ports supported"
	default 2
	help
	  This sets the limit on the number of PD ports supported on the
	  device. This is used to set the size for tables used by devices.

	  TODO(b/176237074): Can we calculate this from the devicetree at some
	  point? Or update the sn5S330 driver to use an 8-bit flag byte for
	  source_enabled[] so that plenty of ports are supported without this
	  configuration option?

config PLATFORM_EC_CONSOLE_CMD_MFALLOW
	bool "Console command: mfallow"
	default y
	help
	  Controls whether multi-function support is allowed for DP (Display
	  Port) connections. Default setting allows multi-function support when
	  the attached device also supports multi-function mode.

	    mfallow <port> [true | false]

config PLATFORM_EC_CONSOLE_CMD_PD
	bool "Console command: pd"
	default y
	help
	  Provides information about the current USB Power Delivery state and
	  also allows various changes to be made for testing purposes.

	  It has a number of subcommands:

	     pd dump <n>  - sets the debug level (0-3). This affects all layers
	                    of the stack
	     pd trysrc [0/1/2] - prints or sets the Try.SRC override. Use 0 to
	                    force Try.SRC off, 1 to force Try.SRC on, and 2 to
	                    let USB PD stack control the Try.SRC behavior.
	     pd version   - show PD version in use
	     pd <port> state  - show start for a PD port

	  Ssee usb_pd_console.c for full details including various commands
	  for role swap, reset, enable/disable, requesting SNK or SRC, etc.

config PLATFORM_EC_USB_PD_DEBUG_FIXED_LEVEL
	bool "USB Power Delivery debug level is fixed at build time"
	help
	  Enable this to set the debug level to a fixed value in the build.
	  This saves space but means that the level cannot be changed using
	  commands like 'pd dump'. Typically this should be set when a platform
	  is shipped.

config PLATFORM_EC_USB_PD_DEBUG_LEVEL
	int "Debug level to use"
	depends on PLATFORM_EC_USB_PD_DEBUG_FIXED_LEVEL
	help
	  Sets the value of the debug level to use. If this is 0 then no
	  debugging output is available from the USB Power Delivery stack.
	  The meaning of each level depends on the module in question, but
	  the maximum available level is 3.

config PLATFORM_EC_USB_PD_5V_EN_CUSTOM
	bool "Custom method of detecting VBUS"
	help
	  Enable this if your board needs a custom method to determine if VBUS
	  is enabled on a source port. You must provide an implementation of:

	     int board_is_sourcing_vbus(int port)

	  It should return 0 if not sourcing VBUS on that port and non-zero
	  if sourcing.

choice "Measuring VBUS voltage"
	prompt "Select how VBUS voltage is measured"

config PLATFORM_EC_USB_PD_VBUS_MEASURE_NOT_PRESENT
	bool "VBUS voltage cannot be read"
	help
	  Enable this if the board does not provide any mechanism for the EC to
	  read the analog VBUS voltage.

config PLATFORM_EC_USB_PD_VBUS_MEASURE_CHARGER
	bool "On-board charger supports VBUS measurement"
	help
	  Enable this if the VBUS voltage can be read using a charger on the
	  board.

config PLATFORM_EC_USB_PD_VBUS_MEASURE_TCPC
	bool "Type-C Port Controller supports VBUS measurement"
	help
	  Enable this if the VBUS voltage can be read using the on-board
	  TCPC.

config PLATFORM_EC_USB_PD_VBUS_MEASURE_ADC_EACH_PORT
	bool "VBUS on each port is measured using an ADC channel"
	help
	  Enable this is there is a separate ADC channel for each USB-C VBUS
	  voltage.

endchoice  # Measuring VBUS voltage

config PLATFORM_EC_USBC_VCONN
	bool "Support USB Type-C VCONN"
	default y
	help
	  This enables support for USB Type-C connector voltage (VCONN). This
	  option must be enabled to communicate with electronically marked
	  (E-Mark) cables. This option is required for operation with USB4 and
	  Thunderbolt devices.

	  This is not needed for captive cables.

config PLATFORM_EC_USB_PD_DUAL_ROLE
	bool "Board can act as a dual-role Power Delivery port"
	default y
	help
	  This enables support for switching between source and sink during
	  operation. This means that the port can accept power (e.g. to charge
	  up its battery), or send out power to an attached device on the same
	  port.

config PLATFORM_EC_USB_PD_FRS
	bool "Support Fast Role Swap protocol"
	help
	  Enables the protocol side of Fast Role Swap (FRS). This allows the
	  device to switch from a SNK to a SRC (or vice versa) based on
	  communication with the partner device.

	  For this to work the trigger must be implemented in either the
	  Type-C Port Controller (TCPC) or Power Path Controller (PPC).

	  FRS differs from the traditional power-role swap in that FRS
	  guarantees there is no interruption of power nor disruption of data
	  communication to any downstream devices (such as devices connected
	  to a USB-C hub or dock).

if PLATFORM_EC_USB_PD_FRS

choice "Trigger implementation"
	prompt "Select where the trigger is implemented"
	help
	  The Fast Role Swap (protocol requires that a trigger be implemented to
	  initiate the swap. Use this option to select which of the available
	  options should be used.

config PLATFORM_EC_USB_PD_FRS_PPC
	bool "PPC"
	depends on PLATFORM_EC_USBC_PPC
	help
	  Enable this if the Fast Role Swap trigger is implemented in the
	  Power Path Controller (PPC).

config PLATFORM_EC_USB_PD_FRS_TCPC
	bool "TCPC"
	depends on PLATFORM_EC_USBC_TCPC
	help
	  Enable this if the Fast Role Swap trigger is implemented in the
	  Type-C Port Controller (TCPC).

endchoice # Trigger implementation

endif # PLATFORM_EC_USB_PD_FRS

config PLATFORM_EC_USB_PD_DPS
	bool "Board can support Dynamic PDO Selection"
	depends on PLATFORM_EC_BATTERY
	default n
	help
	  Enable this if the board needs dynamic PDO selection.
	  DPS picks a power efficient PDO regarding to the underlying battery
	  configuration and the system loading.
	  Default configuration can be overrided by `dps_config` to adapt
	  to each board's need.

config PLATFORM_EC_USB_PD_DUAL_ROLE_AUTO_TOGGLE
	bool "Board can use TCPC-controlled DRP toggle"
	depends on PLATFORM_EC_USB_PD_DUAL_ROLE
	default y
	help
	  Enable this if the USB Type-C Port Controllers (TCPC) used on the
	  board supports toggling of the power role autonomously. When this is
	  disabled, the USB power delivery task is responsible for manually
	  toggling the power role.

config PLATFORM_EC_USB_PD_DISCHARGE
	bool "Board can discharge VBUS"
	default y
	help
	  Enable this if the board can enable VBUS discharge (eg. through a
	  GPIO-controlled discharge circuit, or through port controller
	  registers) to discharge VBUS rapidly on disconnect

choice "Discharge method"
	prompt "Select the discharge method"
	depends on PLATFORM_EC_USB_PD_DISCHARGE

config PLATFORM_EC_USB_PD_DISCHARGE_GPIO
	bool "GPIO control"
	help
	  Enable this if the discharge circuit is controlled by a GPIO

	  TODO: How to specify the GPIO?

config PLATFORM_EC_USB_PD_DISCHARGE_TCPC
	bool "Discharge circuit is provided by the TCPC"
	help
	  Enable this if the discharge circuit is provided by Power-Delivery
	  resistors on the USB Type-C Port Controller (TCPC).

config PLATFORM_EC_USB_PD_DISCHARGE_PPC
	bool "Discharge circuit is provided by the PPC"
	help
	  Enable this if the discharge circuit is using Power Delivery
	  resistors on the Power Path Controller.

endchoice  # Discharge method

config PLATFORM_EC_USB_PD_REV30
	bool "USB PD Rev3.0 functionality"
	default y
	help
	  Enable this to allow Rev3.0 functionality, including features such as
	  Fast Role Swap, advertising the available power across all ports of a
	  multi-port charger, and USB4. If disabled, only USB Power Delivery
	  Rev2.0 functionality is supported.

	  This defaults to y because PD Rev3.0 is required for USB4
	  functionality.

config PLATFORM_EC_USB_PD_ALT_MODE
	bool "USB Power Delivery alternate mode"
	default y
	help
	  Enable this to support USB PD alternate mode. This allows negotiation
	  of a different mode of operation to allow non-USB traffic to pass over
	  a USB Type-C link. This makes use of some or all of the USB 3.0 bus
	  differential pairs. If all are used for the alternate mode, then USB
	  transmission is not available at all while in this mode.

config PLATFORM_EC_USB_PD_ALT_MODE_DFP
	bool "Downward Facing Port support"
	default y
	help
	  Enable support for USB Power Delivery alternate mode of Downward
	  Facing Port.

	  TODO: Add more help here

config PLATFORM_EC_USB_PD_ALT_MODE_UFP
	bool "Upward Facing Port support"
	help
	  Enable support for USB Power Delivery alternate mode of Upward
	  Facing Port (UFP).

	  By default, Chromium OS only enables alternate modes (Display Port,
	  USB4, Thuderbolt, etc) when the USB data role resolves to the
	  Downstream Facing Port (DFP) role. Enable this option to support
	  USB4 and ThunderBolt operation when the Chromium OS data role
	  resolves to the UFP role.

config PLATFORM_EC_USB_PD_USB32_DRD
	bool "Port is cable of operating as an USB3.2 device"
	default y
	help
	  Enable this if the board's USB Power Delivery Downward Facing Port is
	  able to support the USB3.2 standard. This is advertised to the
	  other end so that it can potentially take advantage of the additional
	  features available.

config PLATFORM_EC_USB_PD_DP_HPD_GPIO
	bool "Hotplug Detect (HPD) is controlled by an EC GPIO"
	help
	  Enable this if the EC must send the Hotplug Detect (HPD) signal to
	  the DisplayPort Graphics Processing Unit (GPU) via a GPIO. Otherwise
	  this is sent by the display device.

config PLATFORM_EC_USB_PD_DP_HPD_GPIO_CUSTOM
	bool "Custom handling of HPD GPIO"
	depends on PLATFORM_EC_USB_PD_DP_HPD_GPIO
	help
	  Enable this if the Hotplug Detect (HPD) GPIO level has to be handled
	  by custom functions. In this case your board must implement a
	  function to enable the feature for a port and another function to
	  check the current state:

	    void svdm_set_hpd_gpio(int port, int enable);

	    int svdm_get_hpd_gpio(int port);

choice "VBUS detection method"
	prompt "Select the method to detect VBUS"

config PLATFORM_EC_USB_PD_VBUS_DETECT_TCPC
	bool "TCPC detects VBUS"
	help
	  Choose this option if the TCPC can detect the presence of VBUS

config PLATFORM_EC_USB_PD_VBUS_DETECT_CHARGER
	bool "Charger detects VBUS"
	help
	  Choose this option if the battery charger can detect the presence
	  of VBUS

config PLATFORM_EC_USB_PD_VBUS_DETECT_PPC
	bool "PPC detects VBUS"
	help
	  Choose this option if the Power-Path Controller (PPC) can detect the
	  presence of VBUS

config PLATFORM_EC_USB_PD_VBUS_DETECT_NONE
	bool "No way to detect VBUS"
	help
	  Choose this option if it is not possible to detect VBUS.

endchoice  # VBUS detection method

config PLATFORM_EC_USB_TYPEC_SM
	bool "Type-C (TC) physical-layer state machine"
	default y
	help
	  This enables the bottom layer of the TCPMv2 state machine which
	  handles using CC lines to set the voltage-level of the power supplied.
	  You should normally define this unless you want to override it in your
	  board code, which is not recommended.

config PLATFORM_EC_USB_PRL_SM
	bool "Protocol layer (PRL) state machine"
	default y
	help
	  This enables the middle layer of the power-delivery (PD) protocol,
	  which deals with the flow of power messages across the USB Type-C
	  interface. You should normally define this unless you want to override
	  it in your board code, which is not recommended.

config PLATFORM_EC_USB_PE_SM
	bool "Policy engine (PE) state machine"
	default y
	help
	  This enables the top layer of the power-delivery (PD) protocol, which
	  deals with the actually PD messages that are exchanged with attached
	  USB devices. You should normally define this unless you want to
	  override it in your board code, which is not recommended.

config PLATFORM_EC_USB_PD_DECODE_SOP
	def_bool y  # Required for TCPMV2
	help
	  This enables support for encoding of the message's Start Of Packet
	  (SOP, SOP' and SOP'', collectively called SOP*) in bits 31-28 of the
	  32-bit msg header type.

config PLATFORM_EC_HOSTCMD_PD_CONTROL
	bool "Host command: EC_CMD_PD_CONTROL"
	default y
	help
	  Enable the EC_CMD_PD_CONTROL host command. This allows control
	  of the USB-PD chip from the AP, including reset, suspend/resume
	  and enabling power.

	  This host command can be manually executed using the
	  "ectool pdcontrol" command from the Chromium OS shell.

config PLATFORM_EC_USB_PD_LOGGING
	bool "Host command: EC_CMD_PD_GET_LOG_ENTRY"
	help
	  Enable logging of USB Power Delivery events. The AP can request the
	  log to see what has happened recently.

	  The log events are stored in a circular buffer, each one being a
	  struct event_log_entry.

menuconfig PLATFORM_EC_USB_PD_CONSOLE_CMD
	bool "Enable USB PD console commands"
	default y if PLATFORM_EC_USB_PD_ALT_MODE_DFP
	help
	  Enables various USB-C PD related console commands.

if PLATFORM_EC_USB_PD_CONSOLE_CMD

config PLATFORM_EC_CONSOLE_CMD_USB_PD_PE
	bool "Console command: pe"
	default y
	help
	  This command dumps information about the USB PD alternate mode options
	  discovered from the partner device. It can be useful for debugging.

	  Example: pe 1 dump
	     IDENT SOP:

	             [ID Header] 2c000bda :: AMA, VID:0bda
	             [Cert Stat] 00000000
	             [2] 00000209    [3] 11000f09
	     IDENT SOP':
	             [ID Header] 1c000489 :: PCable, VID:0489
	             [Cert Stat] 000001c6
	             [2] f6810000    [3] 11082051
	     SVID[0]: ff01 MODES: [1] 000c0045
	     MODE[1]: svid:ff01 caps:000c0045

config PLATFORM_EC_CONSOLE_CMD_USB_PD_CABLE
	bool "Console command: pdcable"
	default y
	help
	  This commands shows the USB cable charactistics as detected from the
	  device. It can be useful for debugging problems with cables and the
	  device's response to them.

	  Example: pdcable 1
	     Cable Type: Passive
	     Cable Rev: 1.0
	     Connector Type: 2
	     Cable Current: 5A
	     USB Superspeed Signaling support: 1
	     Rounded support: No
	     Optical cable: No
	     Retimer support: No
	     Link training: Bi-directional
	     Thunderbolt cable type: Passive

endif  # PLATFORM_EC_USB_PD_CONSOLE_CMD

choice "USB-C device type"
	prompt "Select the USB-C device type"
	default PLATFORM_EC_USB_DRP_ACC_TRYSRC

config PLATFORM_EC_USB_VPD
	bool "VCONN-Powered Device"
	help
	  This enables support for supplying power to devices that accept power
	  over the USB VCONN line.

	  See here for details:

	  https://www.usb.org/sites/default/files/D1T2-3a%20-%20CTVPDs%20and%20Making%20Your%20Own%20USB-C%20Thingamajig.pdf

config PLATFORM_EC_USB_CTVPD
	bool "Charge-Through VCONN-Powered Device"
	help
	  This enables support for supplying power to devices, with a circuit
	  that deals with this without needing the involvement of the main
	  device.

config PLATFORM_EC_USB_DRP_ACC_TRYSRC
	bool "Dual-Role Port, Audio Accessory, and Try.SRC Device"
	help
	  This is the most flexible option, allowing the port to operate in
	  a dual-role capacity, so that power can be accepted or supplied on
	  a port.

endchoice  # USB-C device type

config PLATFORM_EC_USB_PD_TRY_SRC
	bool "Enable Try.SRC mode"
	depends on PLATFORM_EC_USB_DRP_ACC_TRYSRC
	default y
	help
	  This enables Try.SRC mode so that the board will try to be a source
	  for power if the other end offers both options. This can be useful
	  for laptops, for example, since when attaching to a cellphone we want
	  the laptop to charge the phone, not vice versa.

config PLATFORM_EC_USB_PD_USB4
	bool "USB4 support"
	depends on PLATFORM_EC_USB_PD_REV30
	default y
	help
	  This enables support for entering into USB4 mode between two port
	  partners. The provides new features such as higher speeds and more
	  flexible multiplexing of data on the cable for different purposes,
	  e.g. attaching multiple displays and storage devices on the same bus.

config PLATFORM_EC_USB_PD_TBT_COMPAT_MODE
	bool "Thunderbolt-compatible mode support"
	depends on PLATFORM_EC_USB_PD_REV30
	default y
	help
	  Enable this to allow entering into Thunderbolt-compatible mode between
	  two port partners. This does not require that USB4 mode be enabled.

endif  # PLATFORM_EC_USB_POWER_DELIVERY

menuconfig PLATFORM_EC_USBC_PPC
	bool "USB Type-C Power Path Controller"
	default y
	help
	  Enable this to support the USB Type-C PPC on your board. This enables
	  common routines for things like figuring out whether power is being
	  supplied to the Chromebook over USB-C, whether the Chromebook is
	  supplying power to another device, etc.

if PLATFORM_EC_USBC_PPC

config PLATFORM_EC_USBC_PPC_POLARITY
	bool
	help
	  Enable this if a Power Path Controller needs to be informed of
	  the polarity of the Configuration Channel (CC) pins. This can change
	  depending on which way up the USB-C cable is inserted into the
	  device.

	  This should be enabled by drivers which can detect this. It cannot be
	  set otherwise, even in prj.conf

config PLATFORM_EC_USBC_PPC_SBU
	bool
	help
	  Enable this if a Power Path Controller is capable of gating the
	  Sideband Use (SBU) lines. If so, the USB mux will use this feature
	  to isolate the lines before entering into alternate mode.

	  This should be enabled by drivers which can detect this. It cannot be
	  set otherwise, even in prj.conf

config PLATFORM_EC_USBC_PPC_VCONN
	bool
	depends on PLATFORM_EC_USBC_VCONN
	help
	  Enable this if a Power Path Controller is capable of providing
	  VCONN. If so, the USB stack will enable / disable VCONN as needed.

	  This should be enabled by drivers which can detect this. It cannot be
	  set otherwise, even in prj.conf

	  Note: This may not be true, as there may be scenarios where the board
	  might need to disable this feature (for instance when both the PPC and
	  TCPC can supply VCONN). We can cross that bridge when we come to it.

config PLATFORM_EC_USBC_PPC_SN5S330
	bool "TI SN5S330 PD 3.0 power mux"
	select PLATFORM_EC_USBC_OCP
	select PLATFORM_EC_USBC_PPC_POLARITY
	select PLATFORM_EC_USBC_PPC_SBU
	select PLATFORM_EC_USBC_PPC_VCONN if PLATFORM_EC_USBC_VCONN
	help
	  This is a USB Type-C Power Delivery 3.0 Bidirectional Power Mux with
	  CC and SBU short-to-VBUS Protection and Integrated Dead Battery
	  LDO. This chips provides protection against pins shorting to Vbus as
	  well as ESD (Electostatic discharge) protection. It provides a simple
	  I2C interface for for Mode Selection, Fast Role Swap, and Fault
	  Reporting.

config PLATFORM_EC_USBC_PPC_SYV682X
	bool "SYV682X which is a Power Mux for USB PD"
	select PLATFORM_EC_USBC_OCP
	select PLATFORM_EC_USBC_PPC_POLARITY
	select PLATFORM_EC_USBC_PPC_VCONN if PLATFORM_EC_USBC_VCONN
	help
	  The SYV682A is a 2 to 1 power mux switch for USB PD applications. The
	  SYV682A supports dead battery wake up function and Fast Role Swap
	  features. It provides protection against overcurrent, overvoltage,
	  thermal shutdown, and undervoltage conditions.

config PLATFORM_EC_USBC_PPC_SYV682C
	bool "SYV682C Power Mux for USB PD (subset of SYV682X)"
	depends on PLATFORM_EC_USBC_PPC_SYV682X
	help
	  The C version of this chip won't block I2C accessing to the CONTROL4
	  rer (to on/off Vconn) when smart discahrge is enabled. This allows us
	  to re-enable the smart discharge on boards using SYV682C.

config PLATFORM_EC_USBC_PPC_SYV682X_NO_CC
	bool "SYV682X does not pass through CC"
	help
	  Enable this if a SYV682X does not pass through CC.
	  There is a 3.6V limit on the HOST_CC signals, so the TCPC
	  should not source 5V VCONN. This config determines if
	  sourcing VCONN should be enabled by default.

config PLATFORM_EC_USBC_PPC_SYV682X_SMART_DISCHARGE
	bool "Enable smart discharge on the SYV682X PPC"
	help
	  Enable the smart discharge feature on VBUS provided by the SYV682x
	  PPC.  This should be enabled for revision C and above of the SYV682X.
	  Earlier revisions of the chip block I2C transactions during smart
	  discharge, causing USB PD compliance issues.

config PLATFORM_EC_USBC_PPC_DEDICATED_INT
	bool "Power Power Controller has a dedicated interrupt pin"
	help
	  Enable this if the Power Power Controller (PPC) has level interrupts
	  (as opposed to edge) and a dedicated interrupt pin to check the
	  current state.

	  If this is enabled the USB Power Delivery (PD) stack will call
	  ppc_get_alert_status() to find out he interrupt status for a port.
	  This function should be provided by the board code.

config PLATFORM_EC_USB_PD_TCPC_LOW_POWER
	bool "Allow Type-C Port Controller to enter low-power mode"
	default y
	help
	  Allows entry to a low power mode when the USB port is idle.
	  When enabled, an enter_low_power_mode member is present in tcpm_drv
	  and should be set to a function that selects that mode, such as
	  tcpci_enter_low_power_mode() for TCPCI-compatible TCPCs.

config PLATFORM_EC_USB_PD_TCPC_LPM_EXIT_DEBOUNCE_US
	int "Debounce delay when exiting low-power mode (uS)"
	depends on PLATFORM_EC_USB_PD_TCPC_LOW_POWER
	default 25000
	help
	  Some TCPCs need additional time following a VBUS change to internally
	  debounce the CC line status and update the CC_STATUS register. This
	  is the delay in microseconds to allow before checking the CC line
	  status in the EC.

config PLATFORM_EC_USB_PD_TCPC_VCONN
	bool "If VCONN is enabled, the TCPC will provide VCONN"
	default y if !PLATFORM_EC_USBC_PPC_SYV682X
	default y if PLATFORM_EC_USB_PD_TCPM_ITE_ON_CHIP
	default y if PLATFORM_EC_USBC_PPC_SYV682X_NO_CC
	help
	  Source USB Type-C connector voltage (VCONN) from the Type-C Port
	  Controller (TCPC), and also the Power Path Controller (PPC) if
	  present. Some TCPC/PPC can't handle 5V on its host-side CC pins, so
          disable this config in those cases.

choice "Type-C Port Manager (TCPM)"
	prompt "Choose a Type-C Port Manager (TCPM) to manage TCPC"

config PLATFORM_EC_USB_PD_TCPM_TCPCI
	bool "Use TCPCI"
	help
	  Enable a TCPC compatible with the Type-C Port Controller Interface
	  (TCPCI) Specification. This driver supports both Rev1 v1.2 and Rev2
	  v1.0 of the TCPCI specification. Select this driver directly only
	  if your specific TCPC chip is not listed as a separate config option.

	  Note: most of the TCPC will depend on PLATFORM_EC_USB_PD_TCPM_TCPCI.

# TODO: Add other choices:
#  CONFIG_USB_PD_TCPM_STUB
#  CONFIG_USB_PD_TCPM_FUSB302
#  CONFIG_USB_PD_TCPM_ANX3429
#  CONFIG_USB_PD_TCPM_ANX740X
#  CONFIG_USB_PD_TCPM_ANX741X
#  CONFIG_USB_PD_TCPM_ANX7447
#  CONFIG_USB_PD_TCPM_ANX7688
#  CONFIG_USB_PD_TCPM_NCT38XX
#  CONFIG_USB_PD_TCPM_MT6370
#  CONFIG_USB_PD_TCPM_RAA489000
#  CONFIG_USB_PD_TCPM_FUSB307
#  CONFIG_USB_PD_TCPM_STM32GX
#  CONFIG_USB_PD_TCPM_CCGXXF

endchoice  # Type-C Port Manager (TCPM)

menuconfig PLATFORM_EC_USB_MUX
	bool "USB muxes"
	default y
	help
	  Enables support for USB muxes. These allow multiplexing

if PLATFORM_EC_USB_MUX

config PLATFORM_EC_USB_MUX_IT5205
	bool "ITE IT5205 USB Type-C 3:2 Alternative mode passive mux"
	help
	  This is a USB Type-C 3:2 Alternative mode mux, supporting USB 3.1
	  Gen 2 10Gbps as well as DisplayPort (DP1.4) at 8Gbps. It provides a
	  cross-point mux for low-speed Side-Band-Use (SBU) pins. The mux can
	  be controlled via I2C.

config PLATFORM_EC_USB_MUX_PS8743
	bool "Parade PS8743 USB-C Host Switch with redriver"
	help
	  This is a Parade USB 3.1 Gen 1 / DisplayPort (DP) Alt Mode
	  High-Bit-Rate 2 (HBR2) redriver. It provides control of switching
	  modes through either GPIO or I2C.

endif

config PLATFORM_EC_USBC_SS_MUX
	bool "SuperSpeed mux"
	default y
	help
	  Enable this to support the USB Type-C SuperSpeed Mux. If enabled,
	  the USB stack will call usb_mux_set() to change the mux settings.
	  The board must provide a driver in usb_muxes[] for each port so
	  that this can work.

if PLATFORM_EC_USBC_SS_MUX

config PLATFORM_EC_USB_MUX_RUNTIME_CONFIG
	bool "USB mux runtime config"
	default y
	help
	  Allows the configuration of the USB mux to be set up at runtime. This
	  makes the usb_muxes[] array writable, i.e. not const. It should be
	  declared as such in the board config.

	  This is useful when the board has runtime information that changes
	  the configuration, such as Chromium OS Board Info (CBI set in the
	  factory. Without this, multiple EC images would need to be installed
	  depending on the board.

config PLATFORM_EC_USBC_SS_MUX_DFP_ONLY
	bool "Use SuperSpeed mux only when DFP"
        help
	  Only configure the USB Type-C SuperSpeed Mux when a port is a
	  Downstream Facing Port (DFP). This is needed for chipsets which
	  don't support being an Upstream Facing Port UFP).

config PLATFORM_EC_USB_MUX_VIRTUAL
	bool "USB Mux is virtual"
	depends on PLATFORM_EC_USBC_SS_MUX
	help
	  Enable this if a virtual USB mux is supported on the EC, which is
	  actually handled by the AP. In this case the AP gets an interrupt
	  and is is informed when status changes, via the
	  EC_CMD_USB_PD_MUX_INFO host command.

config PLATFORM_EC_USBC_RETIMER_FW_UPDATE
	bool "Support firmware update of USB Type-C retimers"
	default y
	depends on PLATFORM_EC_USBC_SS_MUX
	help
	   Enable this to support USB Type-C retimer firmware update. Each
	   Type-C retimer indicates its capability of supporting firmware update
	   independently in its usb_mux_driver.

	   During AP boot-up, the AP scans each PD port for retimers but only
	   if there are no Type-C devices attached to the port. The firmware
	   update can only be performed on retimers which show up in the AP
	   thunderbolt device entries.

endif  # PLATFORM_EC_USBC_SS_MUX

config PLATFORM_EC_CONSOLE_CMD_PPC_DUMP
	bool "Console command: ppc_dump"
	depends on PLATFORM_EC_USBC_PPC
	default y
	help
	  Allows dumping of the Power Path Controller (PPC) state, which is
	  basically a list of registers and their values. The actual dump
	  function is driver-specific (the reg_dump member of ppc_drv). By
	  reference to the datasheet for the part this can help you figure out
	  what is going on.

if PLATFORM_EC_USB_PD_TCPM_TCPCI

config PLATFORM_EC_USB_PD_TCPM_ITE_ON_CHIP
	bool "Use on-chip ITE"
	help
	  Use the ITE-series TCPM driver built into the EC chip.

	  This is selected by the ITE USB Type-C drivers. It cannot be set
	  otherwise, even in prj.conf

config PLATFORM_EC_USB_PD_ITE_ACTIVE_PORT_COUNT
	int "Number of ITE USB PD active ports"
	depends on PLATFORM_EC_USB_PD_TCPM_ITE_ON_CHIP
	default 1
	help
	  This sets the number of active USB Power Delivery (USB PD) ports
	  in use on the ITE microcontroller. The active port usage should
	  follow the order of ITE TCPC port index.

config PLATFORM_EC_USB_PD_PPC
	bool "Enable Power Path Control from PD"
	default n
	help
	  Some PD chips have integrated SRC FET and control the SRC/SINK FET
	  from internal GPIOs. Enable this if the Power Path Control is
	  controlled by the PD chip without EC GPIOs.

config PLATFORM_EC_USB_PD_TCPC_RUNTIME_CONFIG
	bool "Type-C Port Controller runtime config"
	default y
	help
	  Allows the configuration of the TCPC to be set up at runtime. This
	  makes the tcpc_config[] array writable, i.e. not const. It should be
	  declared as such in the board config.

	  This is useful when the board has runtime information that sets
	  the configuration, such as Chromium OS Board Info (CBI set in the
	  factory. Without this, multiple EC images would need to be installed
	  depending on the board.

config PLATFORM_EC_USB_PD_TCPM_MULTI_PS8XXX
	bool "Support multiple PS8xxx devices"
	help
	  PS8XXX-series chips are all supported by a single driver. Enable
	  this If a board with the same EC firmware is expected to support
	  multiple products here. Then enable the required PS8xxx options
	  below.

	  In this case the board must provide a function to return the correct
	  product ID actually used by a particular board:

	     uint16_t board_get_ps8xxx_product_id(int port)

	  Supported return values are:

	     PS8705_PRODUCT_ID
	     PS8751_PRODUCT_ID
	     PS8755_PRODUCT_ID
	     PS8805_PRODUCT_ID
	     PS8815_PRODUCT_ID

config PLATFORM_EC_USB_PD_TCPM_PS8751
	bool "Parade PS8751 USB-C Gen 2 Type-C Port Controller"
	select PLATFORM_EC_USB_PD_TCPM_MUX
	help
	  The Parade Technologies PS8751 is a USB Type-C Port Controller (TCPC)
	  for USB Type-C Host and DisplayPort applications. It supports
	  Power Delivery Rev. 2.0 and the DisplayPort Alt Mode version 1.0a.

config PLATFORM_EC_USB_PD_TCPM_PS8805
	bool "Parade PS8805 USB-C Gen 2 Type-C Port Controller"
	select PLATFORM_EC_USB_PD_TCPM_MUX
	help
	  The Parade Technologies PS8805 is an active retiming/redriving
	  (respectively for USB 3.1 Gen 2 / DisplayPort 1.4a HBR3) integrated
	  with a USB Type-C Port Controller (TCPC) for USB Type-C Host and
	  DisplayPort applications. It supports Power Delivery and the
	  DisplayPort Alt Mode.

if PLATFORM_EC_USB_PD_TCPM_PS8805
config PLATFORM_EC_USB_PD_TCPM_PS8805_FORCE_DID
	bool "Parade PS8805 Force Device ID"
	default y
	help
	  Early firmware versions of the PS8805 report an incorrect device ID
	  value for A3 silicon. Enable this option to check the vendor specific
	  chip version register and force the correct device ID.
endif # PLATFORM_EC_USB_PD_TCPM_PS8805

config PLATFORM_EC_USB_PD_TCPM_PS8815
	bool "Parade PS8815 USB-C Gen 2 Type-C Port Controller"
	select PLATFORM_EC_USB_PD_TCPM_MUX
	help
	  The Parade Technologies PS8815 is an active retiming/redriving
	  (respectively for USB 3.1 Gen 2 / DisplayPort 1.4a HBR3) integrated
	  with a USB Type-C Port Controller (TCPC) for USB Type-C Host and
	  DisplayPort applications. It supports Power Delivery and the
	  DisplayPort Alt Mode.

if PLATFORM_EC_USB_PD_TCPM_PS8815
config PLATFORM_EC_USB_PD_TCPM_PS8815_FORCE_DID
	bool "Parade PS8815 Force Device ID"
	default y
	help
	  Early firmware versions of the PS8815 report an incorrect device ID
	  value for A1 silicon. Enable this option to check the vendor specific
	  chip version register and force the correct device ID.
endif # PLATFORM_EC_USB_PD_TCPM_PS8815

config PLATFORM_EC_USB_PD_TCPM_RT1715
	bool "Ricktek RT1715 Type-C Port Controller"
	help
	  The RT1715 is a USB Type-C controller, integrating a complete Type-C
	  Transceiver including the Rp and Rd resistors. It does the USB Type-C
	  detection including attach and orientation. The RT1715 integrates the
	  physical layer of the USB BMC power delivery protocol to allow up to
	  100W of power and role swap. The BMC PD block enables full support
	  for alternative interfaces of the Type-C specification.

config PLATFORM_EC_USB_PD_TCPM_TUSB422
	bool "TI TUSB422 Port Control with USB PD"
	help
	  This is a a USB PD PHY that enables a USB Type-C port with the
	  Configuration Channel (CC) logic needed for USB Type-C ecosystems. It
	  integrates the physical layer of the USB BMC power delivery (PD)
	  protocol to allow up to 100-W of power and support for alternate mode
	  interfaces. An external microprocessor, containing USB Type-C Port
	  Manager (TCPM), communicates with the TUSB422 through an I2C
	  interface.

config PLATFORM_EC_USB_PD_TCPM_MUX
	bool "Support optional register 18h steer the high-speed muxes"
	help
	  Enable this option if the TCPC port controller supports the optional
	  register 18h CONFIG_STANDARD_OUTPUT to steer the high-speed muxes.

	  See section 4.4.4 (CONFIGURE STANDARD OUTPUT) of the USB Type-C Port
	  Controller Interface Specification, Revision 2.0, Version 1.2 for more
	  information.

config PLATFORM_EC_CONSOLE_CMD_TCPC_DUMP
	bool "Console command: tcpc_dump"
	# anx7447 also supports this command, but is not yet enabled
	default y
	help
	  Allows dumping of the Type-C Port Controller (TCPC) state, which is
	  basically a list of registers and their values. By reference to the
	  Universal Serial Bus Type-C Port Controller Interface Specification
	  this can help you figure out what is going on.

endif  # PLATFORM_EC_USB_PD_TCPM_TCPCI

config PLATFORM_EC_USB_PD_TCPM_DRIVER_IT83XX
	bool "Enable IT83XX driver"
	depends on PLATFORM_EC_USB_PD_TCPM_ITE_ON_CHIP
	help
	  Enable a driver for the ITE IT83XX on-chip UBB Type-C Port Manager.
	  This supports up to two USB Type-C ports with Dual Role function
	  (provider and consumer) and Fast Role Swap detection.

config PLATFORM_EC_USB_PD_TCPM_DRIVER_IT8XXX2
	bool "Enable IT8XXX2 driver"
	depends on PLATFORM_EC_USB_PD_TCPM_ITE_ON_CHIP
	help
	  Enable a driver for the ITE IT8XXX2 on-chip UBB Type-C Port Manager.
	  This supports up to two USB Type-C ports with Dual Role function
	  (provider and consumer) and Fast Role Swap detection.

endif  # PLATFORM_EC_USBC_PPC

config PLATFORM_EC_USB_PD_ONLY_FIXED_PDOS
	bool "Only support FIXED type PDOs"
	help
	  Ignore all non-fixed PDOs received from a src_caps message. Enable
	  this for boards (like servo_v4) which only support FIXED PDO types.

config PLATFORM_EC_USB_CHARGER
	bool "Support charging from a USB-C port"
	default y
	select HAS_TASK_USB_CHG_P0
	help
	  This enables common BC1.2 (Battery-Charging Specification Rev1.2)
	  charger-detection routines. With this is possible to negotiate a
	  power contract with an attached battery charger and use this to
	  charge the device's battery.

if PLATFORM_EC_USB_CHARGER

config PLATFORM_EC_BC12_DETECT_PI3USB9201
	bool "Enable support for Pericom PI3USB9201"
	help
	  This is a Dual-Role USB Charging-Type Detector. It can operate in
	  host or client mode. It supports Battery Charging Specification, rev
	  1.2 (BC1.2) with Standard/Charging/Dedicated downstream port
	  (SDP/CDP/DCP) advertisement when in host mode. In client mode it
	  starts BC1.2 detection to detect the attached host type. It provides
	  an I2C interface to report detection results.

config PLATFORM_EC_BC12_DETECT_MT6360
	bool "MediaTek MT6360P PMIC"
	help
	  This PMIC includes a battery charger with an On-The-Go (OTG) output
	  range of 4.85 to 5.825V. It provides integrated ADCs for system
	  monitoring. The MT6360 also supports USB Power Delivery 3.0 with
	  Dual-Role, with host or client mode. It supports alternate mode as
	  well as VCONN with programmable over-current protection (OCP).

config PLATFORM_EC_MT6360_BC12_GPIO
	bool "USB-PHY connection is controlled by a GPIO"
	depends on PLATFORM_EC_BC12_DETECT_MT6360
	help
	  If enabled, the MT6360 USB-PHY connection is controlled by
	  a GPIO: GPIO_BC12_DET_EN. Assert GPIO_BC12_DET_EN to detect a BC1.2
	  device, and deassert GPIO_BC12_DET_EN to mux the USB-PHY back.

config PLATFORM_EC_BC12_SINGLE_DRIVER
	bool "Only support a single BC12 driver"
	default y
	help
	  Enable this if the board only needs one BC12 driver. This includes
	  the case that has multiple chips that use the same driver.

	  If undefined, the board should define a bc12_ports[] array which
	  associates each port to its bc12 driver:

	     struct bc12_config bc12_ports[CONFIG_USB_PD_PORT_MAX_COUNT] = {
	        { .drv = &xxx_drv },
	        { .drv = &yyy_drv },
	     };

endif  # PLATFORM_EC_USB_CHARGER

endif  # PLATFORM_EC_USBC