ASoC: dt-bindings: Rework Qualcomm APR/GPR Sound nodes for SM8450

Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>:

Adding sound support for Qualcomm SM8450 SoC (and later for SC8280XP) brought
some changes to APR/GPR services bindings.  These bindings are part of
qcom,apr.yaml:

  apr-or-gpr-device-node <- qcom,apr.yaml
    apr-gpr-service@[0-9] <- qcom,apr.yaml
      service-specific-components <- /schemas/sound/qcom,q6*.yaml

The schema for services (apr-gpr-service@[0-9]) was not complete and is still
quite not specific.  It allows several incorrect combinations, like adding a
clock-controller to a APM device.  Restricting it would complicate the schema
even more.  Bringing new support for sound on Qualcomm SM8450 and SC8280XP SoC
would grow it as well.

Refactor the bindings before extending them for Qualcomm SM8450 SoC.

Documentation/devicetree/bindings/soc/qcom/qcom,apr-services.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/qcom/qcom,apr-services.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm APR/GPR services shared parts
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description:
+  Common parts of a static service in Qualcomm APR/GPR (Asynchronous/Generic
+  Packet Router).
+
+properties:
+  reg:
+    minimum: 1
+    maximum: 13
+    description: |
+      APR Service ID
+        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.
+      GPR Service ID
+        1 = Audio Process Manager Service
+        2 = Proxy Resource Manager Service.
+        3 = AMDB Service.
+        4 = Voice processing manager.
+
+  qcom,protection-domain:
+    $ref: /schemas/types.yaml#/definitions/string-array
+    description: |
+      Protection domain service name and path for APR service
+      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".
+
+required:
+  - reg
+  - qcom,protection-domain
+
+additionalProperties: true

Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml

@@ -58,8 +58,7 @@ properties:
   qcom,glink-channels:
     $ref: /schemas/types.yaml#/definitions/string-array
     description: Channel name used for the communication
-    items:
-      - const: apr_audio_svc
+    maxItems: 1
 
   qcom,intents:
     $ref: /schemas/types.yaml#/definitions/uint32-array
@@ -81,12 +80,13 @@ properties:
   '#size-cells':
     const: 0
 
-#APR/GPR Services
 patternProperties:
   "^service@[1-9a-d]$":
     type: object
+    $ref: /schemas/soc/qcom/qcom,apr-services.yaml
+    additionalProperties: true
     description:
-      APR/GPR node's client devices use subnodes for desired static port services.
+      APR/GPR static port services.
 
     properties:
       compatible:
@@ -98,99 +98,6 @@ patternProperties:
           - qcom,q6apm
           - qcom,q6prm
 
-      reg:
-        minimum: 1
-        maximum: 13
-        description:
-          APR Service ID
-            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.
-          GPR Service ID
-            1 = Audio Process Manager Service
-            2 = Proxy Resource Manager Service.
-            3 = AMDB Service.
-            4 = Voice processing manager.
-
-      clock-controller:
-        $ref: /schemas/sound/qcom,q6dsp-lpass-clocks.yaml#
-        description: Qualcomm DSP LPASS clock controller
-        unevaluatedProperties: false
-
-      dais:
-        type: object
-        oneOf:
-          - $ref: /schemas/sound/qcom,q6apm-dai.yaml#
-          - $ref: /schemas/sound/qcom,q6dsp-lpass-ports.yaml#
-          - $ref: /schemas/sound/qcom,q6asm-dais.yaml#
-        unevaluatedProperties: false
-        description: Qualcomm DSP audio ports
-
-      routing:
-        type: object
-        $ref: /schemas/sound/qcom,q6adm-routing.yaml#
-        unevaluatedProperties: false
-        description: Qualcomm DSP LPASS audio routing
-
-      qcom,protection-domain:
-        $ref: /schemas/types.yaml#/definitions/string-array
-        description: protection domain service name and path for apr service
-          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".
-
-    allOf:
-      - if:
-          properties:
-            compatible:
-              enum:
-                - qcom,q6afe
-        then:
-          properties:
-            dais:
-              properties:
-                compatible:
-                  const: qcom,q6afe-dais
-
-      - if:
-          properties:
-            compatible:
-              enum:
-                - qcom,q6apm
-        then:
-          properties:
-            dais:
-              properties:
-                compatible:
-                  enum:
-                    - qcom,q6apm-dais
-                    - qcom,q6apm-lpass-dais
-
-      - if:
-          properties:
-            compatible:
-              enum:
-                - qcom,q6asm
-        then:
-          properties:
-            dais:
-              properties:
-                compatible:
-                  const: qcom,q6asm-dais
-
-    additionalProperties: false
-
 required:
   - compatible
   - qcom,domain
@@ -203,7 +110,15 @@ allOf:
             - qcom,gpr
     then:
       properties:
+        qcom,glink-channels:
+          items:
+            - const: adsp_apps
         power-domains: false
+    else:
+      properties:
+        qcom,glink-channels:
+          items:
+            - const: apr_audio_svc
 
   - if:
       required:
@@ -227,6 +142,8 @@ examples:
     apr {
         compatible = "qcom,apr-v2";
         qcom,domain = <APR_DOMAIN_ADSP>;
+        qcom,glink-channels = "apr_audio_svc";
+        qcom,intents = <512 20>;
         #address-cells = <1>;
         #size-cells = <0>;
 
@@ -236,22 +153,24 @@ examples:
             qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
         };
 
-        q6afe: service@4 {
+        service@4 {
             compatible = "qcom,q6afe";
             reg = <APR_SVC_AFE>;
             qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
-        };
 
-        q6asm: service@7 {
-          compatible = "qcom,q6asm";
-          reg = <APR_SVC_ASM>;
-          qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+            clock-controller {
+                compatible = "qcom,q6afe-clocks";
+                #clock-cells = <2>;
             };
 
-        q6adm: service@8 {
-          compatible = "qcom,q6adm";
-          reg = <APR_SVC_ADM>;
-          qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+            dais {
+                compatible = "qcom,q6afe-dais";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                #sound-dai-cells = <1>;
+                /* ... */
+            };
+            /* ... */
         };
     };
 
@@ -260,12 +179,25 @@ examples:
     gpr {
         compatible = "qcom,gpr";
         qcom,domain = <GPR_DOMAIN_ID_ADSP>;
+        qcom,glink-channels = "adsp_apps";
+        qcom,intents = <512 20>;
         #address-cells = <1>;
         #size-cells = <0>;
 
         service@1 {
             compatible = "qcom,q6apm";
             reg = <GPR_APM_MODULE_IID>;
+            #sound-dai-cells = <0>;
             qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            dais {
+                compatible = "qcom,q6apm-dais";
+                iommus = <&apps_smmu 0x1801 0x0>;
+            };
+
+            bedais {
+                compatible = "qcom,q6apm-lpass-dais";
+                #sound-dai-cells = <1>;
+            };
         };
     };

Documentation/devicetree/bindings/sound/qcom,q6adm-routing.yaml

@@ -30,23 +30,7 @@ additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/soc/qcom,apr.h>
-    #include <dt-bindings/sound/qcom,q6asm.h>
-
-    apr {
-        compatible = "qcom,apr-v2";
-        qcom,domain = <APR_DOMAIN_ADSP>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        service@8 {
-            compatible = "qcom,q6adm";
-            reg = <APR_SVC_ADM>;
-            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
-
     routing {
         compatible = "qcom,q6adm-routing";
         #sound-dai-cells = <0>;
     };
-        };
-    };

Documentation/devicetree/bindings/sound/qcom,q6adm.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6adm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Audio Device Manager (Q6ADM)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6adm
+
+  routing:
+    type: object
+    $ref: /schemas/sound/qcom,q6adm-routing.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP LPASS audio routing
+
+required:
+  - compatible
+  - routing
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,apr.h>
+
+    apr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@8 {
+            compatible = "qcom,q6adm";
+            reg = <APR_SVC_ADM>;
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            routing {
+                compatible = "qcom,q6adm-routing";
+                #sound-dai-cells = <0>;
+            };
+        };
+    };

Documentation/devicetree/bindings/sound/qcom,q6afe.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6afe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Audio FrontEnd (Q6AFE)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6afe
+
+  clock-controller:
+    $ref: /schemas/sound/qcom,q6dsp-lpass-clocks.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP LPASS clock controller
+
+  dais:
+    type: object
+    $ref: /schemas/sound/qcom,q6dsp-lpass-ports.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP audio ports
+
+required:
+  - compatible
+  - dais
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,apr.h>
+    #include <dt-bindings/sound/qcom,q6afe.h>
+    apr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@4 {
+            compatible = "qcom,q6afe";
+            reg = <APR_SVC_AFE>;
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            clock-controller {
+                compatible = "qcom,q6afe-clocks";
+                #clock-cells = <2>;
+            };
+
+            dais {
+                compatible = "qcom,q6afe-dais";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                #sound-dai-cells = <1>;
+
+                dai@22 {
+                    reg = <QUATERNARY_MI2S_RX>;
+                    qcom,sd-lines = <0 1 2 3>;
+                };
+            };
+        };
+    };

Documentation/devicetree/bindings/sound/qcom,q6apm-dai.yaml

@@ -27,20 +27,7 @@ additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/soc/qcom,gpr.h>
-    gpr {
-        compatible = "qcom,gpr";
-        #address-cells = <1>;
-        #size-cells = <0>;
-        qcom,domain = <GPR_DOMAIN_ID_ADSP>;
-
-        service@1 {
-            compatible = "qcom,q6apm";
-            reg = <1>;
-
     dais {
         compatible = "qcom,q6apm-dais";
         iommus = <&apps_smmu 0x1801 0x0>;
     };
-        };
-    };

Documentation/devicetree/bindings/sound/qcom,q6apm-lpass-dais.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6apm-lpass-dais.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm DSP LPASS (Low Power Audio SubSystem) Audio Ports
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6apm-lpass-dais
+
+  '#sound-dai-cells':
+    const: 1
+
+required:
+  - compatible
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    dais {
+        compatible = "qcom,q6apm-lpass-dais";
+        #sound-dai-cells = <1>;
+    };

Documentation/devicetree/bindings/sound/qcom,q6apm.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6apm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Audio Process Manager (Q6APM)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6apm
+
+  bedais:
+    type: object
+    $ref: /schemas/sound/qcom,q6apm-lpass-dais.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP audio ports
+
+  dais:
+    type: object
+    $ref: /schemas/sound/qcom,q6apm-dai.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP audio ports
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - bedais
+  - dais
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,gpr.h>
+
+    gpr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@1 {
+            reg = <GPR_APM_MODULE_IID>;
+            compatible = "qcom,q6apm";
+            #sound-dai-cells = <0>;
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            dais {
+                compatible = "qcom,q6apm-dais";
+                iommus = <&apps_smmu 0x1801 0x0>;
+            };
+
+            bedais {
+                compatible = "qcom,q6apm-lpass-dais";
+                #sound-dai-cells = <1>;
+            };
+        };
+    };

Documentation/devicetree/bindings/sound/qcom,q6asm-dais.yaml

@@ -73,20 +73,6 @@ additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/soc/qcom,apr.h>
-    #include <dt-bindings/sound/qcom,q6asm.h>
-
-    apr {
-        compatible = "qcom,apr-v2";
-        qcom,domain = <APR_DOMAIN_ADSP>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        service@7 {
-            compatible = "qcom,q6asm";
-            reg = <APR_SVC_ASM>;
-            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
-
     dais {
         compatible = "qcom,q6asm-dais";
         iommus = <&apps_smmu 0x1821 0x0>;
@@ -108,5 +94,3 @@ examples:
             direction = <1>;
         };
     };
-        };
-    };

Documentation/devicetree/bindings/sound/qcom,q6asm.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6asm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Audio Stream Manager (Q6ASM)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6asm
+
+  dais:
+    type: object
+    $ref: /schemas/sound/qcom,q6asm-dais.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP audio ports
+
+required:
+  - compatible
+  - dais
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,apr.h>
+
+    apr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@7 {
+            compatible = "qcom,q6asm";
+            reg = <APR_SVC_ASM>;
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            dais {
+                compatible = "qcom,q6asm-dais";
+                iommus = <&apps_smmu 0x1821 0x0>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+                #sound-dai-cells = <1>;
+
+                dai@0 {
+                    reg = <0>;
+                };
+
+                dai@1 {
+                    reg = <1>;
+                };
+
+                dai@2 {
+                    reg = <2>;
+                    is-compress-dai;
+                    direction = <1>;
+                };
+            };
+        };
+    };

Documentation/devicetree/bindings/sound/qcom,q6core.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6core.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Audio Core (Q6Core)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6core
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,apr.h>
+
+    apr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@3 {
+            compatible = "qcom,q6core";
+            reg = <APR_SVC_ADSP_CORE>;
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+        };
+    };

Documentation/devicetree/bindings/sound/qcom,q6dsp-lpass-clocks.yaml

@@ -35,41 +35,7 @@ additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/soc/qcom,apr.h>
-    #include <dt-bindings/sound/qcom,q6afe.h>
-    apr {
-        compatible = "qcom,apr-v2";
-        qcom,domain = <APR_DOMAIN_ADSP>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        service@4 {
-            compatible = "qcom,q6afe";
-            reg = <APR_SVC_AFE>;
-            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
-
     clock-controller {
         compatible = "qcom,q6afe-clocks";
         #clock-cells = <2>;
     };
-        };
-    };
-
-  - |
-    #include <dt-bindings/soc/qcom,gpr.h>
-    gpr {
-        compatible = "qcom,gpr";
-        qcom,domain = <GPR_DOMAIN_ID_ADSP>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        service@2 {
-            reg = <GPR_PRM_MODULE_IID>;
-            compatible = "qcom,q6prm";
-
-            clock-controller {
-                compatible = "qcom,q6prm-lpass-clocks";
-                #clock-cells = <2>;
-            };
-        };
-    };

Documentation/devicetree/bindings/sound/qcom,q6dsp-lpass-ports.yaml

@@ -16,7 +16,6 @@ properties:
   compatible:
     enum:
       - qcom,q6afe-dais
-      - qcom,q6apm-lpass-dais
 
   '#sound-dai-cells':
     const: 1
@@ -150,18 +149,7 @@ additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/soc/qcom,apr.h>
-    #include <dt-bindings/sound/qcom,q6afe.h>
-    apr {
-        compatible = "qcom,apr-v2";
-        #address-cells = <1>;
-        #size-cells = <0>;
-        qcom,domain = <APR_DOMAIN_ADSP>;
-
-        service@4 {
-            compatible = "qcom,q6afe";
-            reg = <APR_SVC_AFE>;
-            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+    #include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
 
     dais {
         compatible = "qcom,q6afe-dais";
@@ -174,30 +162,3 @@ examples:
             qcom,sd-lines = <0 1 2 3>;
         };
     };
-        };
-    };
-  - |
-    #include <dt-bindings/soc/qcom,gpr.h>
-    gpr {
-        compatible = "qcom,gpr";
-        #address-cells = <1>;
-        #size-cells = <0>;
-        qcom,domain = <GPR_DOMAIN_ID_ADSP>;
-
-        service@1 {
-            compatible = "qcom,q6apm";
-            reg = <GPR_APM_MODULE_IID>;
-
-            dais {
-                compatible = "qcom,q6apm-lpass-dais";
-                #address-cells = <1>;
-                #size-cells = <0>;
-                #sound-dai-cells = <1>;
-
-                dai@22 {
-                    reg = <QUATERNARY_MI2S_RX>;
-                    qcom,sd-lines = <0 1 2 3>;
-                };
-            };
-        };
-    };

Documentation/devicetree/bindings/sound/qcom,q6prm.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,q6prm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Proxy Resource Manager (Q6PRM)
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+allOf:
+  - $ref: /schemas/soc/qcom/qcom,apr-services.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,q6prm
+
+  clock-controller:
+    $ref: /schemas/sound/qcom,q6dsp-lpass-clocks.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP LPASS clock controller
+
+required:
+  - compatible
+  - clock-controller
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/qcom,gpr.h>
+
+    gpr {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        service@2 {
+            reg = <GPR_PRM_MODULE_IID>;
+            compatible = "qcom,q6prm";
+            qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
+
+            clock-controller {
+                compatible = "qcom,q6prm-lpass-clocks";
+                #clock-cells = <2>;
+            };
+        };
+    };

MAINTAINERS

@@ -16799,7 +16799,7 @@ M:	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
 M:	Banajit Goswami <bgoswami@quicinc.com>
 L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Supported
-F:	Documentation/devicetree/bindings/soc/qcom/qcom,apr.yaml
+F:	Documentation/devicetree/bindings/soc/qcom/qcom,apr*
 F:	Documentation/devicetree/bindings/sound/qcom,*
 F:	drivers/soc/qcom/apr.c
 F:	include/dt-bindings/sound/qcom,wcd9335.h