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88 lines
1.9 KiB
88 lines
1.9 KiB
Qualcomm Technologies, Inc. FastRPC Driver |
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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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- compatible: |
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Usage: required |
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Value type: <stringlist> |
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Definition: must be "qcom,fastrpc" |
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- label |
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Usage: required |
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Value type: <string> |
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Definition: should specify the dsp domain name this fastrpc |
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corresponds to. must be one of this: "adsp", "mdsp", "sdsp", "cdsp" |
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- qcom,non-secure-domain: |
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Usage: required |
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Value type: <boolean> |
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Definition: Property to specify that dsp domain is non-secure. |
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- qcom,vmids: |
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Usage: optional |
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Value type: <u32 array> |
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Definition: Virtual machine IDs for remote processor. |
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- #address-cells |
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Usage: required |
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Value type: <u32> |
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Definition: Must be 1 |
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- #size-cells |
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Usage: required |
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Value type: <u32> |
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Definition: Must be 0 |
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= COMPUTE BANKS |
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Each subnode of the Fastrpc represents compute context banks available |
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on the dsp. |
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- All Compute context banks MUST contain the following properties: |
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- compatible: |
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Usage: required |
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Value type: <stringlist> |
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Definition: must be "qcom,fastrpc-compute-cb" |
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- reg |
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Usage: required |
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Value type: <u32> |
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Definition: Context Bank ID. |
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- qcom,nsessions: |
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Usage: Optional |
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Value type: <u32> |
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Defination: A value indicating how many sessions can share this |
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context bank. Defaults to 1 when this property |
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is not specified. |
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Example: |
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adsp-pil { |
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compatible = "qcom,msm8996-adsp-pil"; |
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... |
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smd-edge { |
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label = "lpass"; |
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fastrpc { |
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compatible = "qcom,fastrpc"; |
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qcom,smd-channels = "fastrpcsmd-apps-dsp"; |
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label = "adsp"; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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cb@1 { |
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compatible = "qcom,fastrpc-compute-cb"; |
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reg = <1>; |
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}; |
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cb@2 { |
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compatible = "qcom,fastrpc-compute-cb"; |
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reg = <2>; |
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}; |
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... |
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}; |
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}; |
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};
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