Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
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+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>;
+			};
+			...
+		};
+	};
+};