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nxp,dai-sai

Vendor: NXP Semiconductors

Description

NXP Synchronous Audio Interface (SAI) node

Properties

Properties not inherited from the base binding file.

Name

Type

Details

mclk-is-output

boolean

Use this property to set the SAI MCLK as output or as input.
By default, if this property is not specified, MCLK will be
set as input. Setting the MCLK as output for SAIs which don't
support MCLK configuration will result in a BUILD_ASSERT()
failure.

rx-fifo-watermark

int

Use this property to specify the watermark value for the TX
FIFO. This value needs to be in FIFO words (NOT BYTES). This
value needs to be in the following interval: (0, DEFAULT_FIFO_DEPTH],
otherwise a BUILD_ASSERT() failure will be raised.

tx-fifo-watermark

int

Use this property to specify the watermark value for the RX
FIFO. This value needs to be in FIFO words (NOT BYTES). This
value needs to be in the following interval: (0, DEFAULT_FIFO_DEPTH],
otherwise a BUILD_ASSERT() failure will be raised.

fifo-depth

int

Use this property to set the FIFO depth that will be reported
to other applications calling dai_get_properties(). This value
should be in the following interval: (0, DEFAULT_FIFO_DEPTH],
otherwise a BUILD_ASSERT() failure will be raised.
By DEFAULT_FIFO_DEPTH we mean the actual (hardware) value of
the FIFO depth. This is needed because some applications (e.g: SOF)
use this value to compute the DMA burst size, in which case
DEFAULT_FIFO_DEPTH cannot be used. Generally, reporting a false
FIFO depth should be avoided. Please note that the sanity check
for tx/rx-fifo-watermark uses DEFAULT_FIFO_DEPTH instead of this
value so use with caution. If unsure, it's better to simply not
use this property, in which case the reported value will be
DEFAULT_FIFO_DEPTH.

dai-index

int

Use this property to specify the index of the DAI. At the
moment, this is only used by SOF to fetch the "struct device"
associated with the DAI whose index Linux passes to SOF
through an IPC. If this property is not specified, the DAI
index will be considered 0.

tx-sync-mode

int

Use this property to specify which synchronization mode to use
for the transmitter. At the moment, the only supported modes are:
  1) The transmitter is ASYNC (0)
  2) The transmitter is in SYNC with the receiver (1)
If this property is not specified, the transmitter will be set to ASYNC.
If one side is SYNC then the other MUST be ASYNC. Failing to meet this
condition will result in a failed BUILD_ASSERT().

Legal values: 0, 1

rx-sync-mode

int

Use this property to specify which synchronization mode to use
for the receiver. At the moment, the only supported modes are:
  1) The receiver is ASYNC (0)
  2) The receiver is in SYNC with the transmitter (1)
If this property is not specified, the receiver will be set to ASYNC.
If one side is SYNC then the other MUST be ASYNC. Failing to meet this
condition will result in a failed BUILD_ASSERT().

Legal values: 0, 1