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    Subject[PATCH V5 18/30] dt-bindings: csky CPU Bindings
    Date
    This patch adds the documentation to describe that how to add cpu nodes in
    dts for SMP.

    Signed-off-by: Guo Ren <ren_guo@c-sky.com>
    ---
    Documentation/devicetree/bindings/csky/cpus.txt | 70 +++++++++++++++++++++++++
    1 file changed, 70 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/csky/cpus.txt

    diff --git a/Documentation/devicetree/bindings/csky/cpus.txt b/Documentation/devicetree/bindings/csky/cpus.txt
    new file mode 100644
    index 0000000..ee3901d
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/csky/cpus.txt
    @@ -0,0 +1,70 @@
    +==================
    +C-SKY CPU Bindings
    +==================
    +
    +The device tree allows to describe the layout of CPUs in a system through
    +the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
    +defining properties for every cpu.
    +
    +Only SMP system need to care about the cpus node and single processor
    +needn't define cpus node at all.
    +
    +=====================================
    +cpus and cpu node bindings definition
    +=====================================
    +
    +- cpus node
    +
    + Description: Container of cpu nodes
    +
    + The node name must be "cpus".
    +
    + A cpus node must define the following properties:
    +
    + - #address-cells
    + Usage: required
    + Value type: <u32>
    + Definition: must be set to 1
    + - #size-cells
    + Usage: required
    + Value type: <u32>
    + Definition: must be set to 0
    +
    +- cpu node
    +
    + Description: Describes one of SMP cores
    +
    + PROPERTIES
    +
    + - device_type
    + Usage: required
    + Value type: <string>
    + Definition: must be "cpu"
    + - reg
    + Usage: required
    + Value type: <u32>
    + Definition: CPU index
    + - status:
    + Usage: required
    + Value type: <string>
    + Definition: "ok" means enable the cpu-core
    + "disabled" means disable the cpu-core
    +
    +Example:
    +--------
    +
    + cpus {
    + #address-cells = <1>;
    + #size-cells = <0>;
    + cpu@0 {
    + device_type = "cpu";
    + reg = <0>;
    + status = "ok";
    + };
    +
    + cpu@1 {
    + device_type = "cpu";
    + reg = <1>;
    + status = "ok";
    + };
    + };
    --
    2.7.4
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