diff options
Diffstat (limited to 'common/usb_pd_alt_mode_dfp.c')
| -rw-r--r-- | common/usb_pd_alt_mode_dfp.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/common/usb_pd_alt_mode_dfp.c b/common/usb_pd_alt_mode_dfp.c index c671616da6..700af4ea25 100644 --- a/common/usb_pd_alt_mode_dfp.c +++ b/common/usb_pd_alt_mode_dfp.c @@ -962,13 +962,18 @@ int enter_tbt_compat_mode(int port, enum tcpm_transmit_type sop, VDO_CMDT(CMDT_INIT) | VDO_SVDM_VERS(pd_get_vdo_ver(port, enter_mode_sop)); + /* + * Enter safe mode before sending Enter mode SOP/SOP'/SOP'' + * Ref: Tiger Lake Platform PD Controller Interface Requirements for + * Integrated USB C, section A.1.2 TBT as DFP. + */ + usb_mux_set_safe_mode(port); + /* For TBT3 Cable Enter Mode Command, number of Objects is 1 */ if ((sop == TCPC_TX_SOP_PRIME) || (sop == TCPC_TX_SOP_PRIME_PRIME)) return 1; - usb_mux_set_safe_mode(port); - dev_mode_resp.raw_value = pd_get_tbt_mode_vdo(port, TCPC_TX_SOP); cable_mode_resp.raw_value = pd_get_tbt_mode_vdo(port, TCPC_TX_SOP_PRIME); |