diff options
Diffstat (limited to 'common/usbc/usb_pd_dpm.c')
| -rw-r--r-- | common/usbc/usb_pd_dpm.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/common/usbc/usb_pd_dpm.c b/common/usbc/usb_pd_dpm.c index 7ea44d169e..e7136f41bc 100644 --- a/common/usbc/usb_pd_dpm.c +++ b/common/usbc/usb_pd_dpm.c @@ -8,6 +8,7 @@ * Refer to USB PD 3.0 spec, version 2.0, sections 8.2 and 8.3 */ +#include "charge_state.h" #include "compile_time_macros.h" #include "console.h" #include "usb_dp_alt_mode.h" @@ -79,6 +80,15 @@ void dpm_attempt_mode_entry(int port) if (pd_get_data_role(port) != PD_ROLE_DFP) return; /* + * Do not try to enter mode while CPU is off. + * CPU transitions (e.g b/158634281) can occur during the discovery + * phase or during enter/exit negotiations, and the state + * of the modes can get out of sync, causing the attempt to + * enter the mode to fail prematurely. + */ + if (chipset_in_or_transitioning_to_state(CHIPSET_STATE_ANY_OFF)) + return; + /* * If discovery has not occurred for modes, do not attempt to switch * to alt mode. */ |