linux-kernel - [PATCH v3 1/5] misc: dt-bindings: Add Qualcomm Fastrpc bindings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190114194112.32567-2-srinivas.kandagatla@linaro.org>
Date:   Mon, 14 Jan 2019 19:41:08 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     robh+dt@...nel.org, gregkh@...uxfoundation.org, arnd@...db.de
Cc:     mark.rutland@....com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, bjorn.andersson@...aro.org,
        bkumar@....qualcomm.com, linux-arm-msm@...r.kernel.org,
        thierry.escande@...aro.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v3 1/5] misc: dt-bindings: Add Qualcomm Fastrpc bindings

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@...aro.org>
Signed-off-by: Thierry Escande <thierry.escande@...aro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../devicetree/bindings/misc/qcom,fastrpc.txt | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/qcom,fastrpc.txt

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
new file mode 100644
index 000000000000..004e636b4133
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
@@ -0,0 +1,84 @@
+Qualcomm Technologies, Inc. FastRPC Driver
+
+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.
+
+- 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 node represents compute context banks available
+on the dsp. The name of the nodes are not important. The properties of these
+nodes are defined by the individual bindings for the specific service
+- All Compute context banks MUST contain the following property:
+
+- compatible:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "qcom,fastrpc-compute-cb"
+
+- reg
+	Usage: required
+	Value type: <u32>
+	Definition: Context Bank ID.
+
+- secured:
+	Usage: Optional
+	Value type: <boolean>
+	Defination: Indicating context bank is secured
+
+- 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";
+			lable = "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>;
+			};
+			...
+		};
+	};
+};
-- 
2.20.1