diff options
| -rw-r--r-- | driver/tcpm/tcpci.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/driver/tcpm/tcpci.c b/driver/tcpm/tcpci.c index 32add02f73..c9b50445e3 100644 --- a/driver/tcpm/tcpci.c +++ b/driver/tcpm/tcpci.c @@ -414,6 +414,20 @@ int tcpci_enter_low_power_mode(int port) int tcpci_tcpm_set_polarity(int port, enum tcpc_cc_polarity polarity) { + int rv; + + /* + * TCPCI sets the CC lines based on polarity. If it is set to + * no connection then both CC lines are driven, otherwise only + * one is driven. + */ + rv = tcpm_set_cc(port, tcpci_get_cached_pull(port)); + if (rv) + return rv; + + if (polarity == POLARITY_NONE) + return EC_SUCCESS; + return tcpc_update8(port, TCPC_REG_TCPC_CTRL, TCPC_REG_TCPC_CTRL_SET(1), |