Qualcomm Generic Packet router aka GPR is the IPC mechanism found in AudioReach next generation signal processing framework to perform command and response messages between various processors. GPR has concepts of static and dynamic port, all static services like APM (Audio Processing Manager), PRM (Proxy resource manager) have fixed port numbers where as dynamic services like graphs have dynamic port numbers which are allocated at runtime. All GPR packet messages will have source and destination domain and port along with opcode and payload. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> --- .../bindings/soc/qcom/qcom,gpr.yaml | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,gpr.yaml diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,gpr.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,gpr.yaml new file mode 100644 index 000000000000..cc08ec51de6a --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,gpr.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/qcom/qcom,gpr.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Qualcomm Generic Packet Router binding + +maintainers: + - Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> + +description: | + This binding describes the Qualcomm Generic Packet Router,Shared Memory Manager, + used to send and receive packets between Audio DSP and Application processor. + +properties: + compatible: + const: qcom,gpr + + qcom,glink-channels: + const: adsp_apps + description: + glink channel associated with gpr function + + qcom,gpr-domain: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [1, 2, 3] + description: + Selects the processor domain for gpr + 1 = Modem Domain + 2 = Audio DSP Domain + 3 = Application Processor Domain + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +#GPR Services +patternProperties: + 'gprservice@[0-9]+$': + type: object + description: + GPR node's client devices use subnodes for desired static port services. + + properties: + reg: + maxItems: 1 + description: Service port id + + additionalProperties: false + +required: + - compatible + - qcom,glink-channels + - qcom,gpr-domain + +additionalProperties: false + +examples: + - | + #include <dt-bindings/soc/qcom,gpr.h> + gpr { + compatible = "qcom,gpr"; + qcom,glink-channels = "adsp_apps"; + qcom,gpr-domain = <GPR_DOMAIN_ID_ADSP>; + #address-cells = <1>; + #size-cells = <0>; + + gprservice@1 { + reg = <GPR_APM_MODULE_IID>; + }; + }; -- 2.21.0
