mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
ee23cf37fd
This patch adds board specific bindings required for dais, In particular for compressed dais and dai direction. Board specific setup involves setting up some of dais as compressed dais and also specify direction of any dai. Some of the dais might only support capture/playback depending on the board level wiring. These two new dt properties will allow such flexibilty at board level dts. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
67 lines
1.5 KiB
Plaintext
67 lines
1.5 KiB
Plaintext
Qualcomm Audio Stream Manager (Q6ASM) binding
|
|
|
|
Q6ASM is one of the APR audio service on Q6DSP.
|
|
Please refer to qcom,apr.txt for details of the common apr service bindings
|
|
used by the apr service device.
|
|
|
|
- but must contain the following property:
|
|
|
|
- compatible:
|
|
Usage: required
|
|
Value type: <stringlist>
|
|
Definition: must be "qcom,q6asm-v<MAJOR-NUMBER>.<MINOR-NUMBER>".
|
|
Or "qcom,q6asm" where the version number can be queried
|
|
from DSP.
|
|
example "qcom,q6asm-v2.0"
|
|
|
|
= ASM DAIs (Digial Audio Interface)
|
|
"dais" subnode of the ASM node represents dai specific configuration
|
|
|
|
- compatible:
|
|
Usage: required
|
|
Value type: <stringlist>
|
|
Definition: must be "qcom,q6asm-dais".
|
|
|
|
- #sound-dai-cells
|
|
Usage: required
|
|
Value type: <u32>
|
|
Definition: Must be 1
|
|
|
|
== ASM DAI is subnode of "dais" and represent a dai, it includes board specific
|
|
configuration of each dai. Must contain the following properties.
|
|
|
|
- reg
|
|
Usage: required
|
|
Value type: <u32>
|
|
Definition: Must be dai id
|
|
|
|
- direction:
|
|
Usage: Required for Compress offload dais
|
|
Value type: <u32>
|
|
Definition: Specifies the direction of the dai stream
|
|
0 for both tx and rx
|
|
1 for only tx (Capture/Encode)
|
|
2 for only rx (Playback/Decode)
|
|
|
|
- is-compress-dai:
|
|
Usage: Required for Compress offload dais
|
|
Value type: <boolean>
|
|
Definition: present for Compress offload dais
|
|
|
|
|
|
= EXAMPLE
|
|
|
|
q6asm@7 {
|
|
compatible = "qcom,q6asm";
|
|
reg = <APR_SVC_ASM>;
|
|
q6asmdai: dais {
|
|
compatible = "qcom,q6asm-dais";
|
|
#sound-dai-cells = <1>;
|
|
mm@0 {
|
|
reg = <0>;
|
|
direction = <2>;
|
|
is-compress-dai;
|
|
};
|
|
};
|
|
};
|