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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>;
};
};
};
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