cpus.txt

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    1 ==================
    2 C-SKY CPU Bindings
    3 ==================
    4 
    5 The device tree allows to describe the layout of CPUs in a system through
    6 the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
    7 defining properties for every cpu.
    8 
    9 Only SMP system need to care about the cpus node and single processor
   10 needn't define cpus node at all.
   11 
   12 =====================================
   13 cpus and cpu node bindings definition
   14 =====================================
   15 
   16 - cpus node
   17 
   18         Description: Container of cpu nodes
   19 
   20         The node name must be "cpus".
   21 
   22         A cpus node must define the following properties:
   23 
   24         - #address-cells
   25                 Usage: required
   26                 Value type: <u32>
   27                 Definition: must be set to 1
   28         - #size-cells
   29                 Usage: required
   30                 Value type: <u32>
   31                 Definition: must be set to 0
   32 
   33 - cpu node
   34 
   35         Description: Describes one of SMP cores
   36 
   37         PROPERTIES
   38 
   39         - device_type
   40                 Usage: required
   41                 Value type: <string>
   42                 Definition: must be "cpu"
   43         - reg
   44                 Usage: required
   45                 Value type: <u32>
   46                 Definition: CPU index
   47         - compatible:
   48                 Usage: required
   49                 Value type: <string>
   50                 Definition: must contain "csky", eg:
   51                         "csky,610"
   52                         "csky,807"
   53                         "csky,810"
   54                         "csky,860"
   55 
   56 Example:
   57 --------
   58 
   59         cpus {
   60                 #address-cells = <1>;
   61                 #size-cells = <0>;
   62                 cpu@0 {
   63                         device_type = "cpu";
   64                         reg = <0>;
   65                         status = "ok";
   66                 };
   67 
   68                 cpu@1 {
   69                         device_type = "cpu";
   70                         reg = <1>;
   71                         status = "ok";
   72                 };
   73         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/csky/cpus.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/csky/cpus.txt