Kernel-4.18.0-80.el8_brcm,bcm63138

Broadcom BCM63138 DSL System-on-a-Chip device tree bindings

Boards compatible with the BCM63138 DSL System-on-a-Chip should have the
following properties:

Required root node property:

compatible: should be “brcm,bcm63138”

An optional Boot lookup table Device Tree node is required for secondary CPU
initialization as well as a ‘resets’ phandle to the correct PMB controller as
defined in reset/brcm,bcm63138-pmb.txt for this secondary CPU, and an
‘enable-method’ property.

Required properties for the Boot lookup table node:

• compatible: should be “brcm,bcm63138-bootlut”
• reg: register base address and length for the Boot Lookup table

Optional properties for the primary CPU node:

• enable-method: should be “brcm,bcm63138”

Optional properties for the secondary CPU node:

• enable-method: should be “brcm,bcm63138”
• resets: phandle to the relevant PMB controller, one integer indicating the internal
  bus number, and a second integer indicating the address of the CPU in the PMB
  internal bus number.

Example:

cpus {
    cpu@0 {
        compatible = "arm,cotex-a9";
        reg = <0>;
        ...
        enable-method = "brcm,bcm63138";
    };

    cpu@1 {
        compatible = "arm,cortex-a9";
        reg = <1>;
        ...
        enable-method = "brcm,bcm63138";
        resets = <&pmb0 4 1>;
    };
};

bootlut: bootlut@8000 {
    compatible = "brcm,bcm63138-bootlut";
    reg = <0x8000 0x50>;
};

=======
reboot

---

Two nodes are required for software reboot: a timer node and a syscon-reboot node.

Timer node:

• compatible: Must be “brcm,bcm6328-timer”, “syscon”
• reg: Register base address and length

Syscon reboot node:

See Documentation/devicetree/bindings/power/reset/syscon-reboot.txt for the
detailed list of properties, the two values defined below are specific to the
BCM6328-style timer:

• offset: Should be 0x34 to denote the offset of the TIMER_WD_TIMER_RESET register
  from the beginning of the TIMER block
• mask: Should be 1 for the SoftRst bit.

Example:

timer: timer@80 {
    compatible = "brcm,bcm6328-timer", "syscon";
    reg = <0x80 0x3c>;
};

reboot {
    compatible = "syscon-reboot";
    regmap = <&timer>;
    offset = <0x34>;
    mask = <0x1>;
};