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Diffstat (limited to 'Documentation/devicetree/bindings/usb/usb3503.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/usb3503.txt | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt new file mode 100644 index 000000000..52493b148 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb3503.txt @@ -0,0 +1,36 @@ +SMSC USB3503 High-Speed Hub Controller + +Required properties: +- compatible: Should be "smsc,usb3503" or "smsc,usb3503a". + +Optional properties: +- reg: Specifies the i2c slave address, it is required and should be 0x08 + if I2C is used. +- connect-gpios: Should specify GPIO for connect. +- disabled-ports: Should specify the ports unused. + '1' or '2' or '3' are available for this property to describe the port + number. 1~3 property values are possible to be described. + Do not describe this property if all ports have to be enabled. +- intn-gpios: Should specify GPIO for interrupt. +- reset-gpios: Should specify GPIO for reset. +- initial-mode: Should specify initial mode. + (1 for HUB mode, 2 for STANDBY mode) +- refclk: Clock used for driving REFCLK signal (optional, if not provided + the driver assumes that clock signal is always available, its + rate is specified by REF_SEL pins and a value from the primary + reference clock frequencies table is used) +- refclk-frequency: Frequency of the REFCLK signal as defined by REF_SEL + pins (optional, if not provided, driver will not set rate of the + REFCLK signal and assume that a value from the primary reference + clock frequencies table is used) + +Examples: + usb3503@08 { + compatible = "smsc,usb3503"; + reg = <0x08>; + connect-gpios = <&gpx3 0 1>; + disabled-ports = <2 3>; + intn-gpios = <&gpx3 4 1>; + reset-gpios = <&gpx3 5 1>; + initial-mode = <1>; + }; |