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Commit 7ac48a81 authored by Rob Herring's avatar Rob Herring
Browse files

dt-bindings: arm: alpine: Move CPU control related binding to cpu-enable-method/al,alpine-smp 



It is best practice to have 1 binding per file, so board level bindings
should be separate for various misc SoC bindings. Move the Alpine CPU
control to al,alpine-smp and we can also remove a cross reference.

Cc: Tsahee Zidenberg <tsahee@annapurnalabs.com>
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 4355151d

Documentation/devicetree/bindings/arm/al,alpine.txt

+0 −72
Original line number Diff line number Diff line
@@ -14,75 +14,3 @@ compatible: must contain "al,alpine" 


	...

}
 


* CPU node:



The Alpine platform includes cortex-a15 cores.

enable-method: must be "al,alpine-smp" to allow smp  [1]



Example:



cpus {

	#address-cells = <1>;

	#size-cells = <0>;

	enable-method = "al,alpine-smp";



	cpu@0 {

		compatible = "arm,cortex-a15";

		device_type = "cpu";

		reg = <0>;

	};



	cpu@1 {

		compatible = "arm,cortex-a15";

		device_type = "cpu";

		reg = <1>;

	};



	cpu@2 {

		compatible = "arm,cortex-a15";

		device_type = "cpu";

		reg = <2>;

	};



	cpu@3 {

		compatible = "arm,cortex-a15";

		device_type = "cpu";

		reg = <3>;

	};

};





* Alpine CPU resume registers



The CPU resume register are used to define required resume address after

reset.



Properties:

- compatible : Should contain "al,alpine-cpu-resume".

- reg : Offset and length of the register set for the device



Example:



cpu_resume {

	compatible = "al,alpine-cpu-resume";

	reg = <0xfbff5ed0 0x30>;

};



* Alpine System-Fabric Service Registers



The System-Fabric Service Registers allow various operation on CPU and

system fabric, like powering CPUs off.



Properties:

- compatible : Should contain "al,alpine-sysfabric-service" and "syscon".

- reg : Offset and length of the register set for the device



Example:



nb_service {

        compatible = "al,alpine-sysfabric-service", "syscon";

        reg = <0xfb070000 0x10000>;

};



[1] arm/cpu-enable-method/al,alpine-smp

Documentation/devicetree/bindings/arm/cpu-enable-method/al,alpine-smp

+31 −3
Original line number Diff line number Diff line
@@ -14,7 +14,28 @@ Related properties: (none) 


Note:

This enable method requires valid nodes compatible with

"al,alpine-cpu-resume" and "al,alpine-nb-service"[1].

"al,alpine-cpu-resume" and "al,alpine-nb-service".





* Alpine CPU resume registers



The CPU resume register are used to define required resume address after

reset.



Properties:

- compatible : Should contain "al,alpine-cpu-resume".

- reg : Offset and length of the register set for the device





* Alpine System-Fabric Service Registers



The System-Fabric Service Registers allow various operation on CPU and

system fabric, like powering CPUs off.



Properties:

- compatible : Should contain "al,alpine-sysfabric-service" and "syscon".

- reg : Offset and length of the register set for the device





Example:
@@ -48,5 +69,12 @@ cpus { 
	};

};



--

[1] arm/al,alpine.txt
 
cpu_resume {

	compatible = "al,alpine-cpu-resume";

	reg = <0xfbff5ed0 0x30>;

};



nb_service {

        compatible = "al,alpine-sysfabric-service", "syscon";

        reg = <0xfb070000 0x10000>;

};