diff options
| author | Peter Chen <peter.chen@nxp.com> | 2016-10-18 16:36:39 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | b7d3780c08e4f46358625e89b7c44401f3ac04f1 (patch) | |
| tree | baf6e854f17060451444bc06cfc556a0a56ca5c6 /drivers/usb/phy | |
| parent | 6d9cdc256f8a0c5b08d16e759a2bed4104056440 (diff) | |
MLK-13308-2 usb: phy: phy-mxs-usb: handle USB PHY event
For mxs PHY, if there is a vbus but the bus is not enumerated,
force the dp/dm as SE0 from the consider side. If not, there
is possible USB wakeup due to unstable dp/dm, since there is
possible no pull on dp/dm, eg, there is a USB charger on the
port. Note, the vbus event is only occurred at device mode,
and sent by udc driver.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-mxs-usb.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 5cdf06ee9cb0..5407423b507c 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -355,6 +355,7 @@ static bool mxs_phy_is_otg_host(struct mxs_phy *mxs_phy) static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) { bool vbus_is_on = false; + enum usb_phy_events last_event = mxs_phy->phy.last_event; /* If the SoCs don't need to disconnect line without vbus, quit */ if (!(mxs_phy->data->flags & MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS)) @@ -366,7 +367,8 @@ static void mxs_phy_disconnect_line(struct mxs_phy *mxs_phy, bool on) vbus_is_on = mxs_phy_get_vbus_status(mxs_phy); - if (on && !vbus_is_on && !mxs_phy_is_otg_host(mxs_phy)) + if (on && ((!vbus_is_on && !mxs_phy_is_otg_host(mxs_phy)) || + (last_event == USB_EVENT_VBUS))) __mxs_phy_disconnect_line(mxs_phy, true); else __mxs_phy_disconnect_line(mxs_phy, false); |