linux-kernel - [PATCH v2 01/15] dt-bindings: soc: qcom: Add bindings for APR bus

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Date:   Tue,  5 Dec 2017 22:17:58 +0000
From:   srinivas.kandagatla@...aro.org
To:     broonie@...nel.org, bgoswami@...eaurora.org
Cc:     alsa-devel@...a-project.org, tiwai@...e.com, plai@...eaurora.org,
        kwestfie@...eaurora.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, lkasam@....qualcomm.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2 01/15] dt-bindings: soc: qcom: Add bindings for APR bus

From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

This patch add dt bindings for Qualcomm APR bus driver

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../devicetree/bindings/soc/qcom/qcom,apr.txt      | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
new file mode 100644
index 000000000000..4e93213ae98d
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
@@ -0,0 +1,28 @@
+Qualcomm APR (Asynchronous Packet Router) binding
+
+This binding describes the Qualcomm APR. APR is a IPC protocol for
+communication between Application processor and QDSP. APR is mainly
+used for audio/voice services on the QDSP.
+
+- compatible:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "qcom,apr-<SOC-NAME>" example: "qcom,apr-msm8996"
+
+
+- qcom,smd-channel:
+	Usage: required
+	Value type: <string>
+	Definition: standard SMD property specifying the SMD channel used for
+		    communication with the APR on QDSP.
+		    Should be "apr_audio_svc".
+		    Described in soc/qcom/qcom,smd.txt
+
+= EXAMPLE
+The following example represents a QDSP based sound card on a MSM8996 device
+which uses apr as communication between Apps and QDSP.
+
+	apr {
+		compatible = "qcom,apr-msm8996";
+		qcom,smd-channels = "apr_audio_svc";
+	};
-- 
2.15.0