diff options
Diffstat (limited to 'baseboard')
| -rw-r--r-- | baseboard/grunt/usb_pd_policy.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/baseboard/grunt/usb_pd_policy.c b/baseboard/grunt/usb_pd_policy.c index 5c8b7e2359..63e5268668 100644 --- a/baseboard/grunt/usb_pd_policy.c +++ b/baseboard/grunt/usb_pd_policy.c @@ -280,12 +280,22 @@ static int svdm_dp_config(int port, uint32_t *payload) int opos = pd_alt_mode(port, USB_SID_DISPLAYPORT); int mf_pref = PD_VDO_DPSTS_MF_PREF(dp_status[port]); int pin_mode = pd_dfp_dp_get_pin_mode(port, dp_status[port]); + enum typec_mux mux_mode; if (!pin_mode) return 0; - usb_mux_set(port, mf_pref ? TYPEC_MUX_DOCK : TYPEC_MUX_DP, - USB_SWITCH_CONNECT, pd_get_polarity(port)); + /* + * Multi-function operation is only allowed if that pin config is + * supported. + */ + mux_mode = ((pin_mode & MODE_DP_PIN_MF_MASK) && mf_pref) ? + TYPEC_MUX_DOCK : TYPEC_MUX_DP; + CPRINTS("pin_mode: %x, mf: %d, mux: %d", pin_mode, mf_pref, mux_mode); + + /* Connect the SBU and USB lines to the connector. */ + ppc_set_sbu(port, 1); + usb_mux_set(port, mux_mode, USB_SWITCH_CONNECT, pd_get_polarity(port)); payload[0] = VDO(USB_SID_DISPLAYPORT, 1, CMD_DP_CONFIG | VDO_OPOS(opos)); |