From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: robh+dt@kernel.org, kramasub@codeaurora.org, sdharia@quicinc.com,
girishm@quicinc.com, linux-kernel@vger.kernel.org,
bgoswami@codeaurora.org, devicetree@vger.kernel.org,
broonie@kernel.org, linux-arm-msm@vger.kernel.org,
alsa-devel@alsa-project.org, nicolas.dechesne@linaro.org,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v3 1/2] slimbus: ngd: dt-bindings: Add slim ngd dt bindings
Date: Fri, 1 Jun 2018 10:11:40 +0100 [thread overview]
Message-ID: <20180601091141.26108-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20180601091141.26108-1-srinivas.kandagatla@linaro.org>
This patch adds bindings for Qualcomm SLIMBus NGD controller.
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@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
---
.../bindings/slimbus/slim-ngd-qcom-ctrl.txt | 84 ++++++++++++++++++++++
1 file changed, 84 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..e94a2ad3a710
--- /dev/null
+++ b/Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt
@@ -0,0 +1,84 @@
+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-v<MAJOR>.<MINOR>.<STEP>"
+ must be one of the following.
+ "qcom,slim-ngd-v1.5.0" for MSM8996
+ "qcom,slim-ngd-v2.1.0" for SDM845
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: must specify the base address and size of the controller
+ register space.
+- 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
+ Value type: <u32>
+ Definition: Should be 1, reflecting the instance id of ngd.
+
+#size-cells
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 0
+
+= NGD Devices
+Each subnode represents an instance of NGD, must contain the following
+properties:
+
+- reg:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be instance id of ngd.
+
+#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@91c0000 {
+ compatible = "qcom,slim-ngd-v1.5.0";
+ reg = <0x91c0000 0x2c000>;
+ interrupts = <0 163 0>;
+ dmas = <&slimbam 3>, <&slimbam 4>;
+ dma-names = "rx", "tx";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ngd@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ codec@1 {
+ compatible = "slim217,1a0";
+ reg = <1 0>;
+ };
+ };
+};
--
2.16.2
next prev parent reply other threads:[~2018-06-01 9:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-01 9:11 [PATCH v3 0/2] slimbus: Add QCOM SLIMBus NGD driver Srinivas Kandagatla
2018-06-01 9:11 ` Srinivas Kandagatla [this message]
2018-06-01 9:11 ` [PATCH v3 2/2] slimbus: ngd: Add qcom " Srinivas Kandagatla
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