tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1SMSC USB3503 High-Speed Hub Controller
2
3Required properties:
4- compatible: Should be "smsc,usb3503" or "smsc,usb3503a".
5
6Optional properties:
7- reg: Specifies the i2c slave address, it is required and should be 0x08
8 if I2C is used.
9- connect-gpios: Should specify GPIO for connect.
10- disabled-ports: Should specify the ports unused.
11 '1' or '2' or '3' are available for this property to describe the port
12 number. 1~3 property values are possible to be described.
13 Do not describe this property if all ports have to be enabled.
14- intn-gpios: Should specify GPIO for interrupt.
15- reset-gpios: Should specify GPIO for reset.
16- initial-mode: Should specify initial mode.
17 (1 for HUB mode, 2 for STANDBY mode)
18- refclk: Clock used for driving REFCLK signal (optional, if not provided
19 the driver assumes that clock signal is always available, its
20 rate is specified by REF_SEL pins and a value from the primary
21 reference clock frequencies table is used)
22- refclk-frequency: Frequency of the REFCLK signal as defined by REF_SEL
23 pins (optional, if not provided, driver will not set rate of the
24 REFCLK signal and assume that a value from the primary reference
25 clock frequencies table is used)
26
27Examples:
28 usb3503@08 {
29 compatible = "smsc,usb3503";
30 reg = <0x08>;
31 connect-gpios = <&gpx3 0 1>;
32 disabled-ports = <2 3>;
33 intn-gpios = <&gpx3 4 1>;
34 reset-gpios = <&gpx3 5 1>;
35 initial-mode = <1>;
36 };