usb: chipidea: otg: don't wait vbus drops below BSV when starts host
Some HW design may use ID pin state to control vbus for otg port,
so before host role start, the vbus is already turned on, in this
case, we do not need wait vbus dropping below BSV.
Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
index ab4bd0c..45f86da 100644
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@@ -114,9 +114,12 @@
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);
+
+ if (role == CI_ROLE_GADGET)
+ /* 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);
}
}