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Commit a4cdbb96 authored by Florian Fainelli's avatar Florian Fainelli
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Documentation: DT: Document SMP DT nodes and properties for BCM63138 



Add binding documentation for the additional nodes and properties
required to get the secondary CPU online on the BCM63138 SoC.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
parent 39afb980

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

+42 −0
Original line number Diff line number Diff line
@@ -7,3 +7,45 @@ 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>;

	};