From mboxrd@z Thu Jan 1 00:00:00 1970 From: stephen.boyd@linaro.org (Stephen Boyd) Date: Fri, 20 Jan 2017 10:50:56 -0800 Subject: [PATCH v7 4/5] usb: chipidea: Signal vbus state to phy In-Reply-To: <20170120185057.16206-1-stephen.boyd@linaro.org> References: <20170120185057.16206-1-stephen.boyd@linaro.org> Message-ID: <20170120185057.16206-5-stephen.boyd@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Signed-off-by: Stephen Boyd --- 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