On an MSM8939 we have a system behind both a type-c controller and a USB Hub. VBUS is not connected to the PHY and no GPIO is available to signal VBUS state to the USB controller and PHY. In this case we've used USB role-switching to transition between host and device mode. The current code in qcom-usb-hs only touches the VBUS pullup control bits if we have an extcon but, setting those bits is still required on the example I gave of the MSM8939. This series takes the downstream concept of a DT driven flag for the VBUS pullup bits and applies it to upstream in the poweron/poweroff path of the PHY. I've opted to unset the bits on PHY poweroff though in downstream the bits are only ever switched on if the flag is present, downstream never switches the bits off again. I think though, setting the bits off on PHY power-off is the right thing to do, so I've done it. Bryan O'Donoghue (2): dt-bindings: phy-qcom-usb-hs-phy: Add qcom,enable-vbus-pullup phy: qcom-usb-hs: Add qcom,enable-vbus-pullup support .../bindings/phy/qcom,usb-hs-phy.txt | 8 +++++ drivers/phy/qualcomm/phy-qcom-usb-hs.c | 36 +++++++++++++++++++ 2 files changed, 44 insertions(+) -- 2.25.1
