mirror of https://gitee.com/openkylin/linux.git
28 lines
834 B
Plaintext
28 lines
834 B
Plaintext
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* ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU)
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ARM DyanmIQ Shared Unit (DSU) integrates one or more CPU cores
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with a shared L3 memory system, control logic and external interfaces to
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form a multicore cluster. The PMU enables to gather various statistics on
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the operations of the DSU. The PMU provides independent 32bit counters that
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can count any of the supported events, along with a 64bit cycle counter.
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The PMU is accessed via CPU system registers and has no MMIO component.
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** DSU PMU required properties:
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- compatible : should be one of :
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"arm,dsu-pmu"
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- interrupts : Exactly 1 SPI must be listed.
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- cpus : List of phandles for the CPUs connected to this DSU instance.
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** Example:
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dsu-pmu-0 {
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compatible = "arm,dsu-pmu";
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interrupts = <GIC_SPI 02 IRQ_TYPE_LEVEL_HIGH>;
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cpus = <&cpu_0>, <&cpu_1>;
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};
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