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" + +- 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@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>; + }; +};