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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/qcom,fastrpc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm FastRPC Driver
+
+maintainers:
+ - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+ The FastRPC implements an IPC (Inter-Processor Communication)
+ mechanism that allows for clients to transparently make remote method
+ invocations across DSP and APPS boundaries. This enables developers
+ to offload tasks to the DSP and free up the application processor for
+ other tasks.
+
+properties:
+ compatible:
+ const: qcom,fastrpc
+
+ label:
+ enum:
+ - adsp
+ - mdsp
+ - sdsp
+ - cdsp
+
+ memory-region:
+ maxItems: 1
+ description:
+ Phandle to a node describing memory to be used for remote heap CMA.
+
+ qcom,glink-channels:
+ description:
+ A list of channels tied to this function, used for matching
+ the function to a set of virtual channels.
+ $ref: /schemas/types.yaml#/definitions/string-array
+ items:
+ - const: fastrpcglink-apps-dsp
+
+ qcom,non-secure-domain:
+ description:
+ Used to mark the current domain as non-secure.
+ type: boolean
+
+ qcom,smd-channels:
+ description:
+ Channel name used for the RPM communication
+ $ref: /schemas/types.yaml#/definitions/string-array
+ items:
+ - const: fastrpcsmd-apps-dsp
+
+ qcom,vmids:
+ description:
+ Virtual machine IDs for remote processor.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "(compute-)?cb@[0-9]*$":
+ type: object
+
+ description: >
+ Each subnode of the Fastrpc represents compute context banks available on the dsp.
+
+ properties:
+ compatible:
+ const: qcom,fastrpc-compute-cb
+
+ reg:
+ maxItems: 1
+
+ iommus:
+ minItems: 1
+ maxItems: 3
+
+ qcom,nsessions:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 1
+ description: >
+ A value indicating how many sessions can share this context bank.
+
+ required:
+ - compatible
+ - reg
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - label
+ - "#address-cells"
+ - "#size-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/mailbox/qcom-ipcc.h>
+
+ glink-edge {
+ interrupts-extended = <&ipcc IPCC_CLIENT_LPASS
+ IPCC_MPROC_SIGNAL_GLINK_QMP
+ IRQ_TYPE_EDGE_RISING>;
+ mboxes = <&ipcc IPCC_CLIENT_LPASS
+ IPCC_MPROC_SIGNAL_GLINK_QMP>;
+ label = "lpass";
+ qcom,remote-pid = <2>;
+
+ fastrpc {
+ compatible = "qcom,fastrpc";
+ qcom,glink-channels = "fastrpcglink-apps-dsp";
+ label = "sdsp";
+ qcom,non-secure-domain;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compute-cb@1 {
+ compatible = "qcom,fastrpc-compute-cb";
+ reg = <1>;
+ iommus = <&apps_smmu 0x0541 0x0>;
+ };
+
+ compute-cb@2 {
+ compatible = "qcom,fastrpc-compute-cb";
+ reg = <2>;
+ iommus = <&apps_smmu 0x0542 0x0>;
+ };
+
+ compute-cb@3 {
+ compatible = "qcom,fastrpc-compute-cb";
+ reg = <3>;
+ iommus = <&apps_smmu 0x0543 0x0>;
+ };
+ };
+ };