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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/misc/qcom,fastrpc.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Qualcomm FastRPC Driver8 9maintainers:10 - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>11 12description: |13 The FastRPC implements an IPC (Inter-Processor Communication)14 mechanism that allows for clients to transparently make remote method15 invocations across DSP and APPS boundaries. This enables developers16 to offload tasks to the DSP and free up the application processor for17 other tasks.18 19properties:20 compatible:21 const: qcom,fastrpc22 23 label:24 enum:25 - adsp26 - mdsp27 - sdsp28 - cdsp29 - cdsp130 31 memory-region:32 maxItems: 133 description:34 Phandle to a node describing memory to be used for remote heap CMA.35 36 qcom,glink-channels:37 description:38 A list of channels tied to this function, used for matching39 the function to a set of virtual channels.40 $ref: /schemas/types.yaml#/definitions/string-array41 items:42 - const: fastrpcglink-apps-dsp43 44 qcom,non-secure-domain:45 description:46 Used to mark the current domain as non-secure.47 type: boolean48 49 qcom,smd-channels:50 description:51 Channel name used for the RPM communication52 $ref: /schemas/types.yaml#/definitions/string-array53 items:54 - const: fastrpcsmd-apps-dsp55 56 qcom,vmids:57 description:58 Virtual machine IDs for remote processor.59 $ref: /schemas/types.yaml#/definitions/uint32-array60 61 "#address-cells":62 const: 163 64 "#size-cells":65 const: 066 67patternProperties:68 "(compute-)?cb@[0-9]*$":69 type: object70 71 description: >72 Each subnode of the Fastrpc represents compute context banks available on the dsp.73 74 properties:75 compatible:76 const: qcom,fastrpc-compute-cb77 78 reg:79 maxItems: 180 81 dma-coherent: true82 83 iommus:84 minItems: 185 maxItems: 1086 87 qcom,nsessions:88 $ref: /schemas/types.yaml#/definitions/uint3289 default: 190 description: >91 A value indicating how many sessions can share this context bank.92 93 required:94 - compatible95 - reg96 97 additionalProperties: false98 99required:100 - compatible101 - label102 - "#address-cells"103 - "#size-cells"104 105additionalProperties: false106 107examples:108 - |109 #include <dt-bindings/interrupt-controller/arm-gic.h>110 #include <dt-bindings/mailbox/qcom-ipcc.h>111 112 glink-edge {113 interrupts-extended = <&ipcc IPCC_CLIENT_LPASS114 IPCC_MPROC_SIGNAL_GLINK_QMP115 IRQ_TYPE_EDGE_RISING>;116 mboxes = <&ipcc IPCC_CLIENT_LPASS117 IPCC_MPROC_SIGNAL_GLINK_QMP>;118 label = "lpass";119 qcom,remote-pid = <2>;120 121 fastrpc {122 compatible = "qcom,fastrpc";123 qcom,glink-channels = "fastrpcglink-apps-dsp";124 label = "sdsp";125 qcom,non-secure-domain;126 #address-cells = <1>;127 #size-cells = <0>;128 129 compute-cb@1 {130 compatible = "qcom,fastrpc-compute-cb";131 reg = <1>;132 iommus = <&apps_smmu 0x0541 0x0>;133 };134 135 compute-cb@2 {136 compatible = "qcom,fastrpc-compute-cb";137 reg = <2>;138 iommus = <&apps_smmu 0x0542 0x0>;139 };140 141 compute-cb@3 {142 compatible = "qcom,fastrpc-compute-cb";143 reg = <3>;144 iommus = <&apps_smmu 0x0543 0x0>;145 };146 };147 };148