From 1dc748b3b202cadf9b799874d9af8d441ee556bc Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 5 Apr 2019 14:51:50 +0200 Subject: dts: update to v5.1-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/misc/qcom,fastrpc.txt | 78 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 dts/Bindings/misc/qcom,fastrpc.txt (limited to 'dts/Bindings/misc') diff --git a/dts/Bindings/misc/qcom,fastrpc.txt b/dts/Bindings/misc/qcom,fastrpc.txt new file mode 100644 index 0000000000..2a1827ab50 --- /dev/null +++ b/dts/Bindings/misc/qcom,fastrpc.txt @@ -0,0 +1,78 @@ +Qualcomm Technologies, Inc. FastRPC Driver + +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. + +- compatible: + Usage: required + Value type: + Definition: must be "qcom,fastrpc" + +- label + Usage: required + Value type: + Definition: should specify the dsp domain name this fastrpc + corresponds to. must be one of this: "adsp", "mdsp", "sdsp", "cdsp" + +- #address-cells + Usage: required + Value type: + Definition: Must be 1 + +- #size-cells + Usage: required + Value type: + Definition: Must be 0 + += COMPUTE BANKS +Each subnode of the Fastrpc represents compute context banks available +on the dsp. +- All Compute context banks MUST contain the following properties: + +- compatible: + Usage: required + Value type: + Definition: must be "qcom,fastrpc-compute-cb" + +- reg + Usage: required + Value type: + Definition: Context Bank ID. + +- qcom,nsessions: + Usage: Optional + Value type: + Defination: A value indicating how many sessions can share this + context bank. Defaults to 1 when this property + is not specified. + +Example: + +adsp-pil { + compatible = "qcom,msm8996-adsp-pil"; + ... + smd-edge { + label = "lpass"; + fastrpc { + compatible = "qcom,fastrpc"; + qcom,smd-channels = "fastrpcsmd-apps-dsp"; + label = "adsp"; + #address-cells = <1>; + #size-cells = <0>; + + cb@1 { + compatible = "qcom,fastrpc-compute-cb"; + reg = <1>; + }; + + cb@2 { + compatible = "qcom,fastrpc-compute-cb"; + reg = <2>; + }; + ... + }; + }; +}; -- cgit v1.2.3