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authorRobert Jarzmik <robert.jarzmik@free.fr>2014-12-06 21:05:14 (GMT)
committerFelipe Balbi <balbi@ti.com>2015-01-12 18:13:29 (GMT)
commit7bdea87a871f217a8a463f9203e6d0c702b7fda9 (patch)
treed2d1b1661c3e48221007c7a21b12c022559a1c5f
parente9f2cefb0cdc2aea8b70dbf68a3f78b88e57cf34 (diff)
downloadlinux-7bdea87a871f217a8a463f9203e6d0c702b7fda9.tar.xz
usb: phy: nop: device tree documentation for vbus
Enhance the phy documentation by adding 2 new optional bindings : - the vbus gpio, which detects usb insertion - the vbus regulator, which provides current drawn from the usb cable Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Felipe Balbi <balbi@ti.com>
-rw-r--r--Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
index 8db5b33..5be01c8 100644
--- a/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
+++ b/Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
@@ -17,6 +17,11 @@ Optional properties:
- reset-gpios: Should specify the GPIO for reset.
+- vbus-detect-gpio: should specify the GPIO detecting a VBus insertion
+ (see Documentation/devicetree/bindings/gpio/gpio.txt)
+- vbus-regulator : should specifiy the regulator supplying current drawn from
+ the VBus line (see Documentation/devicetree/bindings/regulator/regulator.txt).
+
Example:
hsusb1_phy {
@@ -26,8 +31,11 @@ Example:
clock-names = "main_clk";
vcc-supply = <&hsusb1_vcc_regulator>;
reset-gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
+ vbus-detect-gpio = <&gpio2 13 GPIO_ACTIVE_HIGH>;
+ vbus-regulator = <&vbus_regulator>;
};
hsusb1_phy is a NOP USB PHY device that gets its clock from an oscillator
and expects that clock to be configured to 19.2MHz by the NOP PHY driver.
hsusb1_vcc_regulator provides power to the PHY and GPIO 7 controls RESET.
+GPIO 13 detects VBus insertion, and accordingly notifies the vbus-regulator.