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author | Ivan T. Ivanov <ivan.ivanov@linaro.org> | 2015-07-08 17:57:40 +0300 |
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committer | Felipe Balbi <balbi@ti.com> | 2015-07-29 09:59:19 -0500 |
commit | 351169933ea22592fb42b97c76c4c130fe287cca (patch) | |
tree | 4024fda6e4df686f9c6a8c23074f2ed80de3376e /Documentation/devicetree/bindings/usb | |
parent | 75ddead2a77db61e818bc0cbe330a856a912f4d9 (diff) | |
download | op-kernel-dev-351169933ea22592fb42b97c76c4c130fe287cca.zip op-kernel-dev-351169933ea22592fb42b97c76c4c130fe287cca.tar.gz |
usb: phy: qcom: New APQ8016/MSM8916 USB transceiver driver
Driver handles PHY initialization, clock management, power
management and workarounds required after resetting the hardware.
Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/devicetree/bindings/usb')
-rw-r--r-- | Documentation/devicetree/bindings/usb/qcom,usb-8x16-phy.txt | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/qcom,usb-8x16-phy.txt b/Documentation/devicetree/bindings/usb/qcom,usb-8x16-phy.txt new file mode 100644 index 0000000..2cb2168 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/qcom,usb-8x16-phy.txt @@ -0,0 +1,76 @@ +Qualcomm's APQ8016/MSM8916 USB transceiver controller + +- compatible: + Usage: required + Value type: <string> + Definition: Should contain "qcom,usb-8x16-phy". + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: USB PHY base address and length of the register map + +- clocks: + Usage: required + Value type: <prop-encoded-array> + Definition: See clock-bindings.txt section "consumers". List of + two clock specifiers for interface and core controller + clocks. + +- clock-names: + Usage: required + Value type: <string> + Definition: Must contain "iface" and "core" strings. + +- vddcx-supply: + Usage: required + Value type: <phandle> + Definition: phandle to the regulator VDCCX supply node. + +- v1p8-supply: + Usage: required + Value type: <phandle> + Definition: phandle to the regulator 1.8V supply node. + +- v3p3-supply: + Usage: required + Value type: <phandle> + Definition: phandle to the regulator 3.3V supply node. + +- resets: + Usage: required + Value type: <prop-encoded-array> + Definition: See reset.txt section "consumers". PHY reset specifier. + +- reset-names: + Usage: required + Value type: <string> + Definition: Must contain "phy" string. + +- switch-gpio: + Usage: optional + Value type: <prop-encoded-array> + Definition: Some boards are using Dual SPDT USB Switch, witch is + controlled by GPIO to de/multiplex D+/D- USB lines + between connectors. + +Example: + usb_phy: phy@78d9000 { + compatible = "qcom,usb-8x16-phy"; + reg = <0x78d9000 0x400>; + + vddcx-supply = <&pm8916_s1_corner>; + v1p8-supply = <&pm8916_l7>; + v3p3-supply = <&pm8916_l13>; + + clocks = <&gcc GCC_USB_HS_AHB_CLK>, + <&gcc GCC_USB_HS_SYSTEM_CLK>; + clock-names = "iface", "core"; + + resets = <&gcc GCC_USB2A_PHY_BCR>; + reset-names = "phy"; + + // D+/D- lines: 1 - Routed to HUB, 0 - Device connector + switch-gpio = <&pm8916_gpios 4 GPIO_ACTIVE_HIGH>; + }; + |