87d73e7338
Bindings for fastrpc nodes and the child nodes. Change-Id: Ic967b92d2324d5f9671614f62973c5f9820d6b4b Signed-off-by: Gokul krishna Krishnakumar <quic_gokukris@quicinc.com>
99 lines
3.2 KiB
YAML
99 lines
3.2 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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$id: "http://devicetree.org/schemas/qdsp/msm-fastrpc.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Qualcomm Technologies, Inc. FastRPC Driver
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description:
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The MSM FastRPC driver 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.qcom,adsprpc-mem node defines the ADSP remote heap region.
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Device is used for CMA allocations and mappings for both secure and
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non-secure usecases.
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maintainers:
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- Anirudh Raghavendra <quic_araghave@quicinc.com>
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properties:
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compatible :
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oneOf:
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- items:
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- "qcom,msm-fastrpc-adsp"
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- "qcom,msm-fastrpc-compute"
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optional:
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- qcom,rpc-latency-us : FastRPC QoS latency vote
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- qcom,adsp-remoteheap-vmid : FastRPC remote heap VMID list
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- qcom,secure-context-bank : Bool indicating secure FastRPC context bank.
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- qcom,fastrpc-legacy-remote-heap : Bool indicating hypervisor is not supported.
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- qcom,fastrpc-adsp-audio-pdr : Flag to enable ADSP Audio PDR
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- qcom,secure-domains : FastRPC secure domain configuration
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- qcom,fastrpc-adsp-sensors-pdr : Flag to enable Sensors PDR
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child-node:
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description:
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Child nodes representing the compute context banks
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properties:
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required:
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- compatible : Must be "qcom,msm-fastrpc-compute-cb"
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- label : Label describing the channel this context bank belongs to
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- iommus : A list of phandle and IOMMU specifier pairs that describe the
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IOMMU master interfaces of the device
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- dma-coherent : A flag marking a context bank as I/O coherent
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- shared-cb : A value indicating how many fastrpc sessions can share a
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context bank
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child-node:
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description:
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Child node for rpmsg instead of glink for IPC
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properties:
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required:
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- compatible : Must be "qcom,msm-fastrpc-rpmsg"
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child-node:
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description:
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Child node representing the Remote Heap region
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properties:
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required:
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- compatible : Must be "qcom,msm-adsprpc-mem-region"
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- memory-region : CMA region which is owned by this device
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- restrict-access : Blocking vote for hyp_assign_phys function call
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Example:
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qcom,msm_fastrpc {
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compatible = "qcom,msm-fastrpc-compute";
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qcom,fastrpc-rpmsg;
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qcom,rpc-latency-us = <235>;
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qcom,adsp-remoteheap-vmid = <22 37>;
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qcom,fastrpc-adsp-sensors-pdr;
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qcom,msm_fastrpc_rpmsg {
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compatible = "qcom,msm-fastrpc-rpmsg";
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qcom,glink-channels = "fastrpcglink-apps-dsp";
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intents = <0x64 64>;
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};
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qcom,msm_fastrpc_compute_cb_1 {
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compatible = "qcom,msm-fastrpc-compute-cb";
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label = "cdsprpc-smd";
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qcom,secure-context-bank;
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iommus = <&apps_smmu 0x1401 0x0>;
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dma-coherent;
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};
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qcom,msm_fastrpc_compute_cb_2 {
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compatible = "qcom,msm-fastrpc-compute-cb";
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label = "sdsprpc-smd";
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iommus = <&apps_smmu 0x1402 0x0>;
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shared-cb = <5>;
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};
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qcom,adsprpc-mem {
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compatible = "qcom,msm-adsprpc-mem-region";
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memory-region = <&adsp_mem>;
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restrict-access;
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};
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};
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