new file mode 100644
@@ -0,0 +1,85 @@
+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,dest-domain-id
+ Usage: required
+ Value type: <prop-encoded-array>
+ 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: <prop-encoded-array>
+ 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.
+
+= 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,smd-channels = "apr_audio_svc";
+ qcom,dest-domain-id = <APR_DOMAIN_ADSP>;
+
+ q6core {
+ compatible = "qcom,q6core";
+ reg = <APR_SVC_ADSP_CORE>;
+ };
+
+ q6afe {
+ compatible = "qcom,q6afe";
+ reg = <APR_SVC_AFE>;
+
+ dais {
+ #sound-dai-cells = <1>;
+ hdmi@1 {
+ reg = <1>;
+ };
+ };
+ };
+
+ q6asm {
+ compatible = "qcom,q6asm";
+ reg = <APR_SVC_ASM>;
+ ...
+ };
+
+ q6adm {
+ compatible = "qcom,q6adm";
+ reg = <APR_SVC_ADM>;
+ ...
+ };
+ };
new file mode 100644
@@ -0,0 +1,27 @@
+#ifndef __DT_BINDINGS_QCOM_APR_H
+#define __DT_BINDINGS_QCOM_APR_H
+
+/* Domain IDs */
+#define APR_DOMAIN_SIM 0x1
+#define APR_DOMAIN_PC 0x2
+#define APR_DOMAIN_MODEM 0x3
+#define APR_DOMAIN_ADSP 0x4
+#define APR_DOMAIN_APPS 0x5
+#define APR_DOMAIN_MAX 0x6
+
+/* ADSP service IDs */
+#define APR_SVC_ADSP_CORE 0x3
+#define APR_SVC_AFE 0x4
+#define APR_SVC_VSM 0x5
+#define APR_SVC_VPM 0x6
+#define APR_SVC_ASM 0x7
+#define APR_SVC_ADM 0x8
+#define APR_SVC_ADSP_MVM 0x09
+#define APR_SVC_ADSP_CVS 0x0A
+#define APR_SVC_ADSP_CVP 0x0B
+#define APR_SVC_USM 0x0C
+#define APR_SVC_LSM 0x0D
+#define APR_SVC_VIDC 0x16
+#define APR_SVC_MAX 0x17
+
+#endif /* __DT_BINDINGS_QCOM_APR_H */