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Commit 992d3615 authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Greg Kroah-Hartman
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slimbus: ngd: dt-bindings: Add slim ngd dt bindings 



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: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Tested-by: default avatarCraig Tatlor <ctatlor97@gmail.com>
Reviewed-by: default avatarVinod Koul <vkoul@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d3062a21

Documentation/devicetree/bindings/slimbus/slim-ngd-qcom-ctrl.txt

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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>;

		};

	};

};