| Message ID | 20200521005031.747162-2-bryan.odonoghue@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | phy: qcom-usb-hs: Add DT controlled VBUS pullup waggle | expand |
On Thu, 21 May 2020 01:50:30 +0100, Bryan O'Donoghue wrote: > This patch adds a dt-binding for qcom,enable-vbus-pullup. The binding > qcom,enable-vbus-pullup tells the HS USB PHY driver whether it should set > and unset the internal VBUS pullup bits when starting/stopping the USB PHY. > > Setting the pullup bits is something you want to do if you have not routed > VBUS to a GPIO on the SoC and thus cannot use extcon with the current > switching logic in the PHY. > > Cc: Andy Gross <agross@kernel.org> > Cc: Bjorn Andersson <bjorn.andersson@linaro.org> > Cc: Kishon Vijay Abraham I <kishon@ti.com> > Cc: Vinod Koul <vkoul@kernel.org> > Cc: Stephen Boyd <sboyd@kernel.org> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: linux-arm-msm@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: devicetree@vger.kernel.org > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > --- > Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt index b3b75c1e6285..77e9bf1f8ba2 100644 --- a/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt @@ -64,6 +64,12 @@ PROPERTIES from the ULPI_EXT_VENDOR_SPECIFIC address, for example, <0x1 0x53> would mean "write the value 0x53 to address 0x81". +- qcom,enable-vbus-pullup: + Usage: optional + Value type: <bool> + Definition: Flag to indicate if the USB PHY driver should toggle internal + VBUS line pullup bits when powering the PHY on or off. + EXAMPLE otg: usb-controller {
This patch adds a dt-binding for qcom,enable-vbus-pullup. The binding qcom,enable-vbus-pullup tells the HS USB PHY driver whether it should set and unset the internal VBUS pullup bits when starting/stopping the USB PHY. Setting the pullup bits is something you want to do if you have not routed VBUS to a GPIO on the SoC and thus cannot use extcon with the current switching logic in the PHY. Cc: Andy Gross <agross@kernel.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Vinod Koul <vkoul@kernel.org> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-arm-msm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> --- Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt | 6 ++++++ 1 file changed, 6 insertions(+)