renesas,smartbond-usbd
Vendor: Renesas Electronics Corporation
Note
An implementation of a driver matching this compatible is available in drivers/usb/udc/udc_smartbond.c.
Description
These nodes are “usb” bus nodes.
Renesas SmartBond USB device controller
Properties
Node specific properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
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Minimum transfer size required to engage DMA.
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Buffer size for OUT end points 0-3.
This property is required. |
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RX FIFO is 64 bytes. When endpoint size is greater then 64,
FIFO warning interrupt is enabled to allow read incoming data
during frame reception.
It is possible to stay in interrupt reading whole packet at once,
but it may be more efficient for MCU to read as much data as
possible and when FIFO is hardly filled exit interrupt handler
waiting for next FIFO warning level interrupt or packet end.
When running at 96MHz code that reads FIFO based on number of
bytes stored in USB_RXSx_REG.USB_RXCOUNT takes enough time to
fill FIFO with two additional bytes.
Settings this threshold above this allows to leave interrupt
handler and wait for more bytes before next ISR. This allows
reduce overall ISR time to 1/3 of time that would be needed
if ISR read as fast as possible.
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Max packet size for ISO out endpoint
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Number of bi-directional endpoints supported by hardware
(including EP0)
This property is required. |
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Number of IN endpoints supported by hardware
(including EP0 IN)
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Number of OUT endpoints supported by hardware
(including EP0 OUT)
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Configures USB controllers to work up to a specific speed. Valid arguments are "super-speed", "high-speed", "full-speed" and "low-speed". If this is not passed via DT, USB controllers should use their maximum hardware capability.
Legal values: |
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Control VBUS via GPIO pin.
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Deprecated node specific properties
Deprecated properties not inherited from the base binding file.
(None)
Base properties
Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “renesas,smartbond-usbd” compatible.
Name |
Type |
Details |
|---|---|---|
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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register space
See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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Clock gate information
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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Property to identify that a device can be used as wake up source.
When this property is provided a specific flag is set into the
device that tells the system that the device is capable of
wake up the system.
Wake up capable devices are disabled (interruptions will not wake up
the system) by default but they can be enabled at runtime if necessary.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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