linux-kernel - [PATCH 1/2] slimbus: ngd: dt-bindings: Add slim ngd dt bindings

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Message-Id: <20180516165118.16551-2-srinivas.kandagatla@linaro.org>
Date:   Wed, 16 May 2018 17:51:17 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     gregkh@...uxfoundation.org, robh+dt@...nel.org
Cc:     kramasub@...eaurora.org, sdharia@...cinc.com, girishm@...cinc.com,
        linux-kernel@...r.kernel.org, mark.rutland@....com,
        bgoswami@...eaurora.org, devicetree@...r.kernel.org,
        broonie@...nel.org, linux-arm-msm@...r.kernel.org,
        alsa-devel@...a-project.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 1/2] slimbus: ngd: dt-bindings: Add slim ngd dt bindings

This patch adds bindings for Qualcomm SLIMBus NGD controller found in
all new SoCs starting from B family.
SLIMBus NGD controller is a light-weight driver responsible for
communicating with SLIMBus slaves directly over the bus using messaging
interface and communicating with master component residing on ADSP for
bandwidth and data-channel management

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 .../bindings/slimbus/slim-ngd-qcom-ctrl.txt        | 70 ++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt

diff --git a/Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt b/Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt
new file mode 100644
index 000000000000..c948fb098819
--- /dev/null
+++ b/Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt
@@ -0,0 +1,70 @@
+Qualcomm SLIMBus Non Generic Device (NGD) Controller binding
+
+SLIMBus NGD controller is a light-weight driver responsible for communicating
+with SLIMBus slaves directly over the bus using messaging interface and
+communicating with master component residing on ADSP for bandwidth and
+data-channel management
+
+Please refer to slimbus/bus.txt for details of the common SLIMBus bindings.
+
+- compatible:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "qcom,slim-ngd"
+
+- reg:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: must specify the base address and size of the controller
+		    register blocks.
+
+- reg-names:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "ctrl"
+
+- qcom,ngd-id
+	Usage: required
+	Value type: <u32>
+	Definition: ngd instance id in the controller
+- dmas
+	Usage: required
+	Value type: <array of phandles>
+	Definition: List of rx and tx dma channels
+
+- dma-names
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be "rx" and "tx".
+
+- interrupts:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: must list controller IRQ.
+
+#address-cells
+	Usage: required
+	Refer to slimbus/bus.txt for details of the common SLIMBus bindings.
+
+#size-cells
+	Usage: required
+	Refer to slimbus/bus.txt for details of the common SLIMBus bindings.
+
+= EXAMPLE
+
+slim@...0000 {
+	compatible = "qcom,slim-ngd";
+	reg = <0x91c0000 0x2C000>;
+	reg-names = "ctrl";
+	interrupts = <0 163 0>;
+	qcom,ngd-id = <1>;
+	dmas =	<&slimbam 3>, <&slimbam 4>;
+	dma-names = "rx", "tx";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+	codec@1 {
+		compatible = "slim217,1a0";
+		reg  = <1 0>;
+	};
+};
-- 
2.16.2