nordic,nrf-pdm¶
Vendor: Nordic Semiconductor
Description¶
Nordic PDM (Pulse Density Modulation interface)
Properties¶
Properties not inherited from the base binding file.
Name |
Type |
Details |
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IMPORTANT: This option will only be used if the new pin control driver
is not enabled. It will be deprecated in the future.
The CLK pin to use.
For pins P0.0 through P0.31, use the pin number. For example,
to use P0.16 for CLK, set:
clk-pin = <16>;
For pins P1.0 through P1.31, add 32 to the pin number. For
example, to use P1.2 for CLK, set:
clk-pin = <34>; /* 32 + 2 */
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IMPORTANT: This option will only be used if the new pin control driver
is not enabled. It will be deprecated in the future.
The DIN pin to use. The pin numbering scheme is the same as
the clk-pin property's.
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Clock source to be used by the PDM peripheral. The following options
are available:
- "PCLK32M": 32 MHz peripheral clock, synchronous to HFCLK
- "PCLK32M_HFXO": PCLK32M running off the 32 MHz crystal oscillator
(HFXO) for better clock accuracy and jitter performance
- "ACLK": Audio PLL clock with configurable frequency (frequency for
this clock must be set via the "hfclkaudio-frequency" property
in the "nordic,nrf-clock" node); this clock source is only available
in the nRF53 Series SoCs and it requires the use of HFXO
Default value: Legal values: |
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Size of the queue of received audio data blocks to be used
by the driver.
Default value: |
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Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.
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Pin configuration/s for the second state. See pinctrl-0.
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Pin configuration/s for the third state. See pinctrl-0.
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Pin configuration/s for the fourth state. See pinctrl-0.
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Pin configuration/s for the fifth state. See pinctrl-0.
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Names for the provided states. The number of names needs to match the
number of states.
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Deprecated properties not inherited from the base binding file.
(None)
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 “nordic,nrf-pdm” compatible.
Name |
Type |
Details |
|---|---|---|
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register space
This property is required. See Important properties for more information. |
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interrupts for device
This property is required. See Important properties for more information. |
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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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name of each register space
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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. |
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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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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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Power domain the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
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