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Diffstat (limited to 'Documentation/devicetree/bindings/mfd/vexpress-spc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/mfd/vexpress-spc.txt | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/vexpress-spc.txt b/Documentation/devicetree/bindings/mfd/vexpress-spc.txt new file mode 100644 index 00000000000..1d71dc2ff15 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/vexpress-spc.txt @@ -0,0 +1,35 @@ +* ARM Versatile Express Serial Power Controller device tree bindings + +Latest ARM development boards implement a power management interface (serial +power controller - SPC) that is capable of managing power/voltage and +operating point transitions, through memory mapped registers interface. + +On testchips like TC2 it also provides a configuration interface that can +be used to read/write values which cannot be read/written through simple +memory mapped reads/writes. + +- spc node + + - compatible: + Usage: required + Value type: <stringlist> + Definition: must be + "arm,vexpress-spc,v2p-ca15_a7","arm,vexpress-spc" + - reg: + Usage: required + Value type: <prop-encode-array> + Definition: A standard property that specifies the base address + and the size of the SPC address space + - interrupts: + Usage: required + Value type: <prop-encoded-array> + Definition: SPC interrupt configuration. A standard property + that follows ePAPR interrupts specifications + +Example: + +spc: spc@7fff0000 { + compatible = "arm,vexpress-spc,v2p-ca15_a7","arm,vexpress-spc"; + reg = <0 0x7FFF0000 0 0x1000>; + interrupts = <0 95 4>; +}; |