diff options
Diffstat (limited to 'board/gingerbread/board.c')
| -rw-r--r-- | board/gingerbread/board.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/board/gingerbread/board.c b/board/gingerbread/board.c index ce7a18ee4f..4c4911dbf2 100644 --- a/board/gingerbread/board.c +++ b/board/gingerbread/board.c @@ -326,6 +326,34 @@ int dock_get_mf_preference(void) return mf; } +static void board_usb_tc_connect(void) +{ + int port = TASK_ID_TO_PD_PORT(task_get_current()); + + /* + * The EC needs to keep the USB hubs in reset until the host port is + * attached so that the USB-EP can be properly enumerated. + */ + if (port == USB_PD_PORT_HOST) { + gpio_set_level(GPIO_EC_HUB1_RESET_L, 1); + gpio_set_level(GPIO_EC_HUB2_RESET_L, 1); + } +} +DECLARE_HOOK(HOOK_USB_PD_CONNECT, board_usb_tc_connect, HOOK_PRIO_DEFAULT); + +static void board_usb_tc_disconnect(void) +{ + int port = TASK_ID_TO_PD_PORT(task_get_current()); + + /* Only the host port disconnect is relevant */ + if (port == USB_PD_PORT_HOST) { + gpio_set_level(GPIO_EC_HUB1_RESET_L, 0); + gpio_set_level(GPIO_EC_HUB2_RESET_L, 0); + } +} +DECLARE_HOOK(HOOK_USB_PD_DISCONNECT, board_usb_tc_disconnect, \ + HOOK_PRIO_DEFAULT); + #endif /* SECTION_IS_RW */ static void board_init(void) |