diff options
| -rw-r--r-- | common/usb_pd_protocol.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/usb_pd_protocol.c b/common/usb_pd_protocol.c index 55a5c97334..2727bdc05a 100644 --- a/common/usb_pd_protocol.c +++ b/common/usb_pd_protocol.c @@ -750,6 +750,16 @@ void pd_task(void) timeout = 10*MSEC; break; case PD_STATE_SNK_DISCOVERY: + /* For non-PD aware source, detect source disconnect */ + cc1_volt = pd_adc_read(pd_polarity); + if (cc1_volt < PD_SNK_VA) { + /* The source disappeared ... */ + pd_task_state = PD_STATE_SNK_DISCONNECTED; + /* Debouncing */ + timeout = 50*MSEC; + break; + } + res = send_control(ctxt, PD_CTRL_GET_SOURCE_CAP); /* packet was acked => PD capable device) */ if (res >= 0) { |