diff options
Diffstat (limited to 'drivers/usb/chipidea/otg.c')
| -rw-r--r-- | drivers/usb/chipidea/otg.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index 7f37484ca362..39bd7ec8bf75 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -52,6 +52,7 @@ void ci_handle_vbus_change(struct ci_hdrc *ci) usb_gadget_vbus_disconnect(&ci->gadget); } +#define CI_VBUS_STABLE_TIMEOUT_MS 5000 static void ci_handle_id_switch(struct ci_hdrc *ci) { enum ci_role role = ci_otg_role(ci); @@ -61,6 +62,9 @@ static void ci_handle_id_switch(struct ci_hdrc *ci) ci_role(ci)->name, ci->roles[role]->name); ci_role_stop(ci); + /* wait vbus lower than OTGSC_BSV */ + hw_wait_reg(ci, OP_OTGSC, OTGSC_BSV, 0, + CI_VBUS_STABLE_TIMEOUT_MS); ci_role_start(ci, role); } } |