Documentation/devicetree/bindings/arm/bcm/brcm,bcm63138.txt

   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,cotex-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.txt 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         };