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-Qualcomm APR (Asynchronous Packet Router) binding
-
-This binding describes the Qualcomm APR. APR is a IPC protocol for
-communication between Application processor and QDSP. APR is mainly
-used for audio/voice services on the QDSP.
-
-- compatible:
- Usage: required
- Value type: <stringlist>
- Definition: must be "qcom,apr-v<VERSION-NUMBER>", example "qcom,apr-v2"
-
-- qcom,apr-domain
- Usage: required
- Value type: <u32>
- Definition: Destination processor ID.
- Possible values are :
- 1 - APR simulator
- 2 - PC
- 3 - MODEM
- 4 - ADSP
- 5 - APPS
- 6 - MODEM2
- 7 - APPS2
-
-= APR SERVICES
-Each subnode of the APR node represents service tied to this apr. The name
-of the nodes are not important. The properties of these nodes are defined
-by the individual bindings for the specific service
-- All APR services MUST contain the following property:
-
-- reg
- Usage: required
- Value type: <u32>
- Definition: APR Service ID
- Possible values are :
- 3 - DSP Core Service
- 4 - Audio Front End Service.
- 5 - Voice Stream Manager Service.
- 6 - Voice processing manager.
- 7 - Audio Stream Manager Service.
- 8 - Audio Device Manager Service.
- 9 - Multimode voice manager.
- 10 - Core voice stream.
- 11 - Core voice processor.
- 12 - Ultrasound stream manager.
- 13 - Listen stream manager.
-
-- qcom,protection-domain
- Usage: optional
- Value type: <stringlist>
- Definition: Must list the protection domain service name and path
- that the particular apr service has a dependency on.
- Possible values are :
- "avs/audio", "msm/adsp/audio_pd".
- "kernel/elf_loader", "msm/modem/wlan_pd".
- "tms/servreg", "msm/adsp/audio_pd".
- "tms/servreg", "msm/modem/wlan_pd".
- "tms/servreg", "msm/slpi/sensor_pd".
-
-= EXAMPLE
-The following example represents a QDSP based sound card on a MSM8996 device
-which uses apr as communication between Apps and QDSP.
-
- apr {
- compatible = "qcom,apr-v2";
- qcom,apr-domain = <APR_DOMAIN_ADSP>;
-
- apr-service@3 {
- compatible = "qcom,q6core";
- reg = <APR_SVC_ADSP_CORE>;
- };
-
- apr-service@4 {
- compatible = "qcom,q6afe";
- reg = <APR_SVC_AFE>;
-
- dais {
- #sound-dai-cells = <1>;
- dai@1 {
- reg = <HDMI_RX>;
- };
- };
- };
-
- apr-service@7 {
- compatible = "qcom,q6asm";
- reg = <APR_SVC_ASM>;
- ...
- };
-
- apr-service@8 {
- compatible = "qcom,q6adm";
- reg = <APR_SVC_ADM>;
- ...
- };
- };
-
-= EXAMPLE 2
-The following example represents a QDSP based sound card with protection domain
-dependencies specified. Here some of the apr services are dependent on services
-running on protection domain hosted on ADSP/SLPI remote processors while others
-have no such dependency.
-
- apr {
- compatible = "qcom,apr-v2";
- qcom,glink-channels = "apr_audio_svc";
- qcom,apr-domain = <APR_DOMAIN_ADSP>;
-
- apr-service@3 {
- compatible = "qcom,q6core";
- reg = <APR_SVC_ADSP_CORE>;
- };
-
- q6afe: apr-service@4 {
- compatible = "qcom,q6afe";
- reg = <APR_SVC_AFE>;
- qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
- ...
- };
-
- q6asm: apr-service@7 {
- compatible = "qcom,q6asm";
- reg = <APR_SVC_ASM>;
- qcom,protection-domain = "tms/servreg", "msm/slpi/sensor_pd";
- ...
- };
-
- q6adm: apr-service@8 {
- compatible = "qcom,q6adm";
- reg = <APR_SVC_ADM>;
- qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
- ...
- };
- };