nxp,dai-sai

Vendor: NXP Semiconductors

Note

An implementation of a driver matching this compatible is available in drivers/dai/nxp/sai/sai.c.

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

tx-dataline

int

 
Use this property to specify which transmission data line the SAI should
use. To find out which transmission line you should use you can:
  1) Check the TRM and see if your SAI instance is multiline. If not then
  you're going to use transmission line 0.
  2) If your SAI is multiline then you need to check the datasheet and see
  the index of the transmission line that's connected to your consumer
  (e.g: the codec).
The indexing of the data line starts at 0. If this property is not specified
then the index of the transmission data line will be 0.
Please note that "channel" and "data line" are synnonyms in this context.

rx-dataline

int

 
Use this property to specify which receive transmission data line the SAI should
use. To find out which receive line you should use you can:
  1) Check the TRM and see if your SAI instance is multiline. If not then
  you're going to use receive line 0.
  2) If your SAI is multiline then you need to check the datasheet and see
  the index of the receive line that's connected to your consumer (e.g: the codec).
The indexing of the data line starts at 0. If this property is not specified
then the index of the receive data line will be 0.
Please note that "channel" and "data line" are synnonyms in this context.

pinctrl-0

phandles

 
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.

pinctrl-1

phandles

 
Pin configuration/s for the second state. See pinctrl-0.

pinctrl-2

phandles

 
Pin configuration/s for the third state. See pinctrl-0.

pinctrl-3

phandles

 
Pin configuration/s for the fourth state. See pinctrl-0.

pinctrl-4

phandles

 
Pin configuration/s for the fifth state. See pinctrl-0.

pinctrl-names

string-array

 
Names for the provided states. The number of names needs to match the
number of states.