blob: 8883542c56ea87213c84a5fff9e11533dbe70d6a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
# Copyright 2022 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.
if PLATFORM_EC_USBC
if PLATFORM_EC_USB_POWER_DELIVERY
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 PLATFORM_EC_USB_PD_FRS_MODE
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"
help
Enable this if the Fast Role Swap trigger is implemented in the
Type-C Port Controller (TCPC).
endchoice # PLATFORM_EC_USB_PD_FRS_MODE
endif # PLATFORM_EC_USB_PD_FRS
endif # PLATFORM_EC_USB_POWER_DELIVERY
endif # PLATFORM_EC_USBC
|
