Constraints; Audio Driver : Constraints - Texas Instruments OMAP35 Series User Manual

5.2.2. Constraints

Table 5.2. Audio Driver : Constraints
42
Constraint
Support for synthesizer and similar
interfaces other than ones described in
supported features.
Formats other than I2S.
Opening of the same stream (Play/
Record) multiple times
Configuration of McBSP as Master.
Configuration of capture and playback
streams in different sampling rates.
Platform Support Products
Remark
Synthesizer and midi interfaces are
not supported as many codecs do not
support the same. If any codec driver
does support it, it would be a specific
functionality of that driver alone.
Formats such as TDM, Left and Right
Justified are currently not supported.
The audio driver will support a single
input (RECORD) and a single output
stream (PLAY). The audio driver will not
allow opening the same stream (Play/
Record) multiple times concurrently.
TWL4030 codec needs to be configured
in Master mode only, and therefore
McBSP can only be used as slave along
with this codec.
TWL4030 codec uses McBSP instance 2
on OMAP3 EVM. This McBSP instance
has a limitation that when used in
full-duplex mode, both reception and
transmission could only use the same
clock signal and the same frame
synchronization signal. Hence capture
and playback streams
configured for two different sampling
frequencies.
Audio Driver
Constraints
cannot be
Version 02.01.01.08