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