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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/csky/cpus.txt
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==================

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C-SKY CPU Bindings

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==================

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The device tree allows to describe the layout of CPUs in a system through

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the "cpus" node, which in turn contains a number of subnodes (ie "cpu")

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defining properties for every cpu.

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Only SMP system need to care about the cpus node and single processor

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needn't define cpus node at all.

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=====================================

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cpus and cpu node bindings definition

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=====================================

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- cpus node

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	Description: Container of cpu nodes

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	The node name must be "cpus".

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	A cpus node must define the following properties:

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	- #address-cells

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		Usage: required

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		Value type: <u32>

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		Definition: must be set to 1

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	- #size-cells

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		Usage: required

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		Value type: <u32>

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		Definition: must be set to 0

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- cpu node

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	Description: Describes one of SMP cores

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	PROPERTIES

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	- device_type

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		Usage: required

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		Value type: <string>

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		Definition: must be "cpu"

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	- reg

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		Usage: required

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		Value type: <u32>

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		Definition: CPU index

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	- compatible:

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		Usage: required

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		Value type: <string>

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		Definition: must contain "csky", eg:

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			"csky,610"

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			"csky,807"

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			"csky,810"

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			"csky,860"

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Example:

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--------

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	cpus {

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		#address-cells = <1>;

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		#size-cells = <0>;

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		cpu@0 {

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			device_type = "cpu";

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			reg = <0>;

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			status = "ok";

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		};

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		cpu@1 {

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			device_type = "cpu";

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			reg = <1>;

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			status = "ok";

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		};

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	};

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