diff options
Diffstat (limited to 'common/usb_pd_protocol.c')
| -rw-r--r-- | common/usb_pd_protocol.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/common/usb_pd_protocol.c b/common/usb_pd_protocol.c index 67592e3249..e1b1b8e27b 100644 --- a/common/usb_pd_protocol.c +++ b/common/usb_pd_protocol.c @@ -2902,7 +2902,21 @@ void pd_task(void *u) */ pd_power_supply_reset(port); #ifdef CONFIG_USBC_VCONN - set_vconn(port, 0); +#ifdef CONFIG_USB_PD_DUAL_ROLE + /* + * If we were previously a sink but also the VCONN source, we should + * still continue to source VCONN. Otherwise, we should turn off VCONN + * since we are also going to turn off VBUS. + */ + if (pd_comm_is_enabled(port) && + (pd_get_saved_port_flags(port, &saved_flgs) == EC_SUCCESS) && + ((saved_flgs & PD_BBRMFLG_POWER_ROLE) == PD_ROLE_SINK) && + (saved_flgs & PD_BBRMFLG_EXPLICIT_CONTRACT) && + (saved_flgs & PD_BBRMFLG_VCONN_ROLE)) + set_vconn(port, 1); + else +#endif + set_vconn(port, 0); #endif /* Initialize TCPM driver and wait for TCPC to be ready */ |