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@xxxxxxxxxxxxx> --- drivers/usb/chipidea/otg.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index ad6c87a..3169c51 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -77,9 +77,12 @@ 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); + + 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); } } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
