diff options
Diffstat (limited to 'common/usb_pd_policy.c')
| -rw-r--r-- | common/usb_pd_policy.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/common/usb_pd_policy.c b/common/usb_pd_policy.c index de6fc63a60..30aa936f28 100644 --- a/common/usb_pd_policy.c +++ b/common/usb_pd_policy.c @@ -786,13 +786,31 @@ int pd_svdm(int port, int cnt, uint32_t *payload, uint32_t **rpayload, } break; case CMD_DP_STATUS: - /* DP status response & UFP's DP attention have same - payload */ + /* + * Note: DP status response & UFP's DP attention have + * the same payload + */ dfp_consume_attention(port, payload); - if (modep && modep->opos) + + if (modep && modep->opos) { + /* + * Place the USB Type-C pins that are to be + * re-configured to DisplayPort Configuration + * into the Safe state. For USB_PD_MUX_DOCK, + * the superspeed signals can remain connected. + * For USB_PD_MUX_DP_ENABLED, disconnect the + * superspeed signals here, before the pins are + * re-configured to DisplayPort (in + * svdm_dp_post_config, when we receive the + * config ack). + */ + if (svdm_dp_get_mux_mode(port) == + USB_PD_MUX_DP_ENABLED) + usb_mux_set_safe_mode(port); rsize = modep->fx->config(port, payload); - else + } else { rsize = 0; + } break; case CMD_DP_CONFIG: if (modep && modep->opos && modep->fx->post_config) |