Some USB PHYs need to be told about vbus changing state
explicitly. For example the qcom USB HS PHY needs to toggle a bit
when vbus goes from low to high (VBUSVLDEXT) to cause the
"session valid" signal to toggle. This signal will pull up D+
when the phy starts running. Add the appropriate phy_set_vbus()
call here to signal vbus state changes to the phy.
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.b...@linaro.org>
---
New patch
drivers/usb/chipidea/otg.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
index 10236fe71522..6ea702beed48 100644
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@@ -134,10 +134,13 @@ void ci_handle_vbus_change(struct ci_hdrc *ci)
if (!ci->is_otg)
return;
- if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active)
+ if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active) {
usb_gadget_vbus_connect(&ci->gadget);
- else if (!hw_read_otgsc(ci, OTGSC_BSV) && ci->vbus_active)
+ phy_set_vbus(ci->phy, 1);
+ } else if (!hw_read_otgsc(ci, OTGSC_BSV) && ci->vbus_active) {
+ phy_set_vbus(ci->phy, 0);
usb_gadget_vbus_disconnect(&ci->gadget);
+ }
}
/**
--
2.10.0.297.gf6727b0
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
