devu-hcd-ehci-mx28.so

Runs on:

QNX OS

Targets:

aarchle64

Options:

int_thresh=num

The interrupt microframe threshold. Valid values are 1, 2, 4, 8, 16, 32, and 64. The default value is 8, which is a 1 millisecond (ms interrupt rate. The chip interrupts after a 1 ms period (USB frame) if there are completed transactions. Setting the value to 1 lets the chip interrupt after 125 microseconds (us) (USB microframe) if there are completed transactions.

ioport=addr

The USB controller register base address. The default is to scan the PCI bus.

irq=num

The interrupt request number.

keepvbus

Indicate to the controller to not turn the VBUS off after the bus is disabled or exits.

memory=name

Set typed memory name for descriptors. The default is /memory/below4G.

no_stream=0|1

Enable (1) or disable (0) stream mode to eliminate underrun or overrun issues that may occur on the USB host controller. The default is disabled (0).

num_ed=num

The number of endpoint descriptors to preallocate.

num_td=num

The number of transfer descriptors to preallocate.

phy=addr

Set PHY base address (in hex).

priority=num

Set the pulse-handler thread's priority (default 21).

vbus_gpio=gpio_bank:gpio_pin:gpio_plev[:gpio_delay]

Specify the GPIO bank (gpio_bank), pin (gpio_pin), and level (gpio_plev) value to toggle the vBus. To use this option, you must specify values for gpio_bank, gpio_pin, and gpio_plev. Specifying a delay (gpio_delay) is optional. Here are the valid values you can use as parameters for this option:

• gpio_bank – The GPIO bank to use, which can range from 1 to 7.
• gpio_pin – The GPIO pin to use, which can range from 0 to 31.
• gpio_plev – The GPIO pin level when the VBUS is on, which can be either 0 or 1.
• gpio_delay – Specify the delay in milliseconds (ms) to toggle the GPIO pin. The default is 100ms, where 100ms is the minimum value that can be specified.

verbose=num

Set the verbosity level (0-7).

Description:

The devu-hcd-ehci-mx28.so driver provides support for computers that have Enhanced Host Controller (ARC) Interface (EHCI) USB controllers. This driver creates the /dev/usb/devu-ehci.so device.

Examples:

io-usb-otg -d hcd-ehci-mx28 ioport=0x5B0D0100,irq=299,no_stream,phy=0x5B100000
           -n /dev/otg/io-usb-otg