| Message ID | 20190201130925.27066-2-srinivas.kandagatla@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v5,1/5] misc: dt-bindings: Add Qualcomm Fastrpc bindings | expand |
On 08/02/2019 12:21, Greg KH wrote: > On Fri, Feb 01, 2019 at 01:09:21PM +0000, Srinivas Kandagatla wrote: >> The FastRPC driver 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. >> >> Co-developed-by: Thierry Escande<thierry.escande@linaro.org> >> Signed-off-by: Thierry Escande<thierry.escande@linaro.org> >> Signed-off-by: Srinivas Kandagatla<srinivas.kandagatla@linaro.org> >> Reviewed-by: Rob Herring<robh@kernel.org> >> --- >> .../devicetree/bindings/misc/qcom,fastrpc.txt | 78 +++++++++++++++++++ >> 1 file changed, 78 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/misc/qcom,fastrpc.txt > What changed from v4? v2? v3? > I have done that in cover letter w.r.t previous versions, Changes since v4(https://patchwork.kernel.org/cover/10779341/) : - collected acks for DT from Rob. - Removed unnecessary list safe iteration spotted by Greg KH. - Removed unnecessary syslog spams. - Added more checks to input validity. > That needs to be somewhere in here, below the --- line or in the 00 > email at the least to give us some idea of what is different. > > v6 please? Sure, I can send v6 with full change log from RFC in cover letter along with some minor fixes. thanks, srini
diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt new file mode 100644 index 000000000000..2a1827ab50d2 --- /dev/null +++ b/Documentation/devicetree/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: <stringlist> + Definition: must be "qcom,fastrpc" + +- label + Usage: required + Value type: <string> + 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: <u32> + Definition: Must be 1 + +- #size-cells + Usage: required + Value type: <u32> + 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: <stringlist> + Definition: must be "qcom,fastrpc-compute-cb" + +- reg + Usage: required + Value type: <u32> + Definition: Context Bank ID. + +- qcom,nsessions: + Usage: Optional + Value type: <u32> + 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>; + }; + ... + }; + }; +};