qcom,q6asm.txt (1720B)
1Qualcomm Audio Stream Manager (Q6ASM) binding 2 3Q6ASM is one of the APR audio service on Q6DSP. 4Please refer to qcom,apr.txt for details of the common apr service bindings 5used by the apr service device. 6 7- but must contain the following property: 8 9- compatible: 10 Usage: required 11 Value type: <stringlist> 12 Definition: must be "qcom,q6asm-v<MAJOR-NUMBER>.<MINOR-NUMBER>". 13 Or "qcom,q6asm" where the version number can be queried 14 from DSP. 15 example "qcom,q6asm-v2.0" 16 17= ASM DAIs (Digital Audio Interface) 18"dais" subnode of the ASM node represents dai specific configuration 19 20- compatible: 21 Usage: required 22 Value type: <stringlist> 23 Definition: must be "qcom,q6asm-dais". 24 25- #sound-dai-cells 26 Usage: required 27 Value type: <u32> 28 Definition: Must be 1 29 30== ASM DAI is subnode of "dais" and represent a dai, it includes board specific 31configuration of each dai. Must contain the following properties. 32 33- reg 34 Usage: required 35 Value type: <u32> 36 Definition: Must be dai id 37 38- direction: 39 Usage: Required for Compress offload dais 40 Value type: <u32> 41 Definition: Specifies the direction of the dai stream 42 Q6ASM_DAI_TX_RX (0) for both tx and rx 43 Q6ASM_DAI_TX (1) for only tx (Capture/Encode) 44 Q6ASM_DAI_RX (2) for only rx (Playback/Decode) 45 46- is-compress-dai: 47 Usage: Required for Compress offload dais 48 Value type: <boolean> 49 Definition: present for Compress offload dais 50 51 52= EXAMPLE 53#include <dt-bindings/sound/qcom,q6asm.h> 54 55apr-service@7 { 56 compatible = "qcom,q6asm"; 57 reg = <APR_SVC_ASM>; 58 q6asmdai: dais { 59 compatible = "qcom,q6asm-dais"; 60 #address-cells = <1>; 61 #size-cells = <0>; 62 #sound-dai-cells = <1>; 63 64 dai@0 { 65 reg = <0>; 66 direction = <Q6ASM_DAI_RX>; 67 is-compress-dai; 68 }; 69 }; 70};