summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/usb/usb251xb.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/usb/usb251xb.txt')
-rw-r--r--Documentation/devicetree/bindings/usb/usb251xb.txt53
1 files changed, 18 insertions, 35 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt
index 0c065f77658f..3957d4edaa74 100644
--- a/Documentation/devicetree/bindings/usb/usb251xb.txt
+++ b/Documentation/devicetree/bindings/usb/usb251xb.txt
@@ -7,18 +7,18 @@ Required properties :
- compatible : Should be "microchip,usb251xb" or one of the specific types:
"microchip,usb2512b", "microchip,usb2512bi", "microchip,usb2513b",
"microchip,usb2513bi", "microchip,usb2514b", "microchip,usb2514bi"
- - hub-reset-gpios : Should specify the gpio for hub reset
+ - reset-gpios : Should specify the gpio for hub reset
+ - reg : I2C address on the selected bus (default is <0x2C>)
Optional properties :
- - reg : I2C address on the selected bus (default is <0x2C>)
- skip-config : Skip Hub configuration, but only send the USB-Attach command
- - vendor-id : USB Vendor ID of the hub (16 bit, default is 0x0424)
- - product-id : USB Product ID of the hub (16 bit, default depends on type)
- - device-id : USB Device ID of the hub (16 bit, default is 0x0bb3)
- - language-id : USB Language ID (16 bit, default is 0x0000)
- - manufacturer : USB Manufacturer string (max 31 characters long)
- - product : USB Product string (max 31 characters long)
- - serial : USB Serial string (max 31 characters long)
+ - vendor-id : Set USB Vendor ID of the hub (16 bit, default is 0x0424)
+ - product-id : Set USB Product ID of the hub (16 bit, default depends on type)
+ - device-id : Set USB Device ID of the hub (16 bit, default is 0x0bb3)
+ - language-id : Set USB Language ID (16 bit, default is 0x0000)
+ - manufacturer : Set USB Manufacturer string (max 31 characters long)
+ - product : Set USB Product string (max 31 characters long)
+ - serial : Set USB Serial string (max 31 characters long)
- {bus,self}-powered : selects between self- and bus-powered operation (default
is self-powered)
- disable-hi-speed : disable USB Hi-Speed support
@@ -31,8 +31,10 @@ Optional properties :
(default is individual)
- dynamic-power-switching : enable auto-switching from self- to bus-powered
operation if the local power source is removed or unavailable
- - oc-delay-{100us,4ms,8ms,16ms} : set over current timer delay (default is 8ms)
- - compound-device : indicated the hub is part of a compound device
+ - oc-delay-us : Delay time (in microseconds) for filtering the over-current
+ sense inputs. Valid values are 100, 4000, 8000 (default) and 16000. If
+ an invalid value is given, the default is used instead.
+ - compound-device : indicate the hub is part of a compound device
- port-mapping-mode : enable port mapping mode
- string-support : enable string descriptor support (required for manufacturer,
product and serial string configuration)
@@ -40,34 +42,15 @@ Optional properties :
device connected.
- sp-disabled-ports : Specifies the ports which will be self-power disabled
- bp-disabled-ports : Specifies the ports which will be bus-power disabled
- - max-sp-power : Specifies the maximum current the hub consumes from an
- upstream port when operating as self-powered hub including the power
- consumption of a permanently attached peripheral if the hub is
- configured as a compound device. The value is given in mA in a 0 - 500
- range (default is 2).
- - max-bp-power : Specifies the maximum current the hub consumes from an
- upstream port when operating as bus-powered hub including the power
- consumption of a permanently attached peripheral if the hub is
- configured as a compound device. The value is given in mA in a 0 - 500
- range (default is 100).
- - max-sp-current : Specifies the maximum current the hub consumes from an
- upstream port when operating as self-powered hub EXCLUDING the power
- consumption of a permanently attached peripheral if the hub is
- configured as a compound device. The value is given in mA in a 0 - 500
- range (default is 2).
- - max-bp-current : Specifies the maximum current the hub consumes from an
- upstream port when operating as bus-powered hub EXCLUDING the power
- consumption of a permanently attached peripheral if the hub is
- configured as a compound device. The value is given in mA in a 0 - 500
- range (default is 100).
- - power-on-time : Specifies the time it takes from the time the host initiates
- the power-on sequence to a port until the port has adequate power. The
- value is given in ms in a 0 - 510 range (default is 100ms).
+ - power-on-time-ms : Specifies the time it takes from the time the host
+ initiates the power-on sequence to a port until the port has adequate
+ power. The value is given in ms in a 0 - 510 range (default is 100ms).
Examples:
usb2512b@2c {
compatible = "microchip,usb2512b";
- hub-reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+ reg = <0x2c>;
+ reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
};
usb2514b@2c {