On Wed, May 16, 2018 at 05:51:17PM +0100, Srinivas Kandagatla wrote:
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@linaro.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"
SoC specific compatible needed.
+- reg:
- Usage: required
- Value type: <prop-encoded-array>
- Definition: must specify the base address and size of the controller
register blocks.
blocks? Is there more than one? If so, how many?
+- reg-names:
- Usage: required
- Value type: <stringlist>
- Definition: must be "ctrl"
reg-names is pointless when there is only 1.
+- qcom,ngd-id
- Usage: required
- Value type: <u32>
- Definition: ngd instance id in the controller
Why do you need this?
+- 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@91c0000 {
- 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