Documentation/devicetree/bindings/powerpc/fsl/ccf.txt

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/powerpc/fsl/ccf.txt

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Linux kernel
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Documentation/devicetree/bindings/powerpc/fsl/ccf.txt
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.txt
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Support Tooling And Documentation
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Documentation
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Support Tooling And Documentation: documentation
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Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

Freescale CoreNet Coherency Fabric(CCF) Device Tree Binding

DESCRIPTION

The CoreNet coherency fabric is a fabric-oriented, connectivity infrastructure
that enables the implementation of coherent, multicore systems.

Required properties:

- compatible: <string list>
		fsl,corenet1-cf - CoreNet coherency fabric version 1.
		Example chips: T4240, B4860

		fsl,corenet2-cf - CoreNet coherency fabric version 2.
		Example chips: P5040, P5020, P4080, P3041, P2041

		fsl,corenet-cf - Used to represent the common registers
		between CCF version 1 and CCF version 2.  This compatible
		is retained for compatibility reasons, as it was already
		used for both CCF version 1 chips and CCF version 2
		chips.  It should be specified after either
		"fsl,corenet1-cf" or "fsl,corenet2-cf".

- reg: <prop-encoded-array>
		A standard property. Represents the CCF registers.

- interrupts: <prop-encoded-array>
		Interrupt mapping for CCF error interrupt.

- fsl,ccf-num-csdids: <u32>
		Specifies the number of Coherency Subdomain ID Port Mapping
		Registers that are supported by the CCF.

- fsl,ccf-num-snoopids: <u32>
		Specifies the number of Snoop ID Port Mapping Registers that
		are supported by CCF.

Example:

	corenet-cf@18000 {
		compatible = "fsl,corenet2-cf", "fsl,corenet-cf";
		reg = <0x18000 0x1000>;
		interrupts = <16 2 1 31>;
		fsl,ccf-num-csdids = <32>;
		fsl,ccf-num-snoopids = <32>;
	};

Annotation

Implementation Notes