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     1 Broadcom BCM63138 DSL System-on-a-Chip device tree bindings
    2 -----------------------------------------------------------
    3 
    4 Boards compatible with the BCM63138 DSL System-on-a-Chip should have the
    5 following properties:
    6 
    7 Required root node property:
    8 
    9 compatible: should be "brcm,bcm63138"
   10 
   11 An optional Boot lookup table Device Tree node is required for secondary CPU
   12 initialization as well as a 'resets' phandle to the correct PMB controller as
   13 defined in reset/brcm,bcm63138-pmb.txt for this secondary CPU, and an
   14 'enable-method' property.
   15 
   16 Required properties for the Boot lookup table node:
   17 - compatible: should be "brcm,bcm63138-bootlut"
   18 - reg: register base address and length for the Boot Lookup table
   19 
   20 Optional properties for the primary CPU node:
   21 - enable-method: should be "brcm,bcm63138"
   22 
   23 Optional properties for the secondary CPU node:
   24 - enable-method: should be "brcm,bcm63138"
   25 - resets: phandle to the relevant PMB controller, one integer indicating the internal
   26   bus number, and a second integer indicating the address of the CPU in the PMB
   27   internal bus number.
   28 
   29 Example:
   30 
   31         cpus {
   32                 cpu@0 {
   33                         compatible = "arm,cortex-a9";
   34                         reg = <0>;
   35                         ...
   36                         enable-method = "brcm,bcm63138";
   37                 };
   38 
   39                 cpu@1 {
   40                         compatible = "arm,cortex-a9";
   41                         reg = <1>;
   42                         ...
   43                         enable-method = "brcm,bcm63138";
   44                         resets = <&pmb0 4 1>;
   45                 };
   46         };
   47 
   48         bootlut: bootlut@8000 {
   49                 compatible = "brcm,bcm63138-bootlut";
   50                 reg = <0x8000 0x50>;
   51         };
   52 
   53 =======
   54 reboot
   55 ------
   56 Two nodes are required for software reboot: a timer node and a syscon-reboot node.
   57 
   58 Timer node:
   59 
   60 - compatible: Must be "brcm,bcm6328-timer", "syscon"
   61 - reg: Register base address and length
   62 
   63 Syscon reboot node:
   64 
   65 See Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml for the
   66 detailed list of properties, the two values defined below are specific to the
   67 BCM6328-style timer:
   68 
   69 - offset: Should be 0x34 to denote the offset of the TIMER_WD_TIMER_RESET register
   70   from the beginning of the TIMER block
   71 - mask: Should be 1 for the SoftRst bit.
   72 
   73 Example:
   74 
   75         timer: timer@80 {
   76                 compatible = "brcm,bcm6328-timer", "syscon";
   77                 reg = <0x80 0x3c>;
   78         };
   79 
   80         reboot {
   81                 compatible = "syscon-reboot";
   82                 regmap = <&timer>;
   83                 offset = <0x34>;
   84                 mask = <0x1>;
   85         };
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