linux-kernel - Re: [PATCH v8 7/8] dt-bindings: Document devicetree binding for ARM DSU PMU

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Message-ID: <20171018092028.iy3x7j2v4twblm5n@lakrids.cambridge.arm.com>
Date:   Wed, 18 Oct 2017 10:20:29 +0100
From:   Mark Rutland <mark.rutland@....com>
To:     Suzuki K Poulose <suzuki.poulose@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        robh@...nel.org, will.deacon@....com, sudeep.holla@....com,
        frowand.list@...il.com, devicetree@...r.kernel.org,
        Jonathan.Cameron@...wei.com, marc.zyngier@....com,
        peterz@...radead.org, mathieu.poirier@...aro.org,
        leo.yan@...aro.org
Subject: Re: [PATCH v8 7/8] dt-bindings: Document devicetree binding for ARM
 DSU PMU

On Tue, Oct 10, 2017 at 11:33:02AM +0100, Suzuki K Poulose wrote:
> This patch documents the devicetree bindings for ARM DSU PMU.
> 
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: devicetree@...r.kernel.org
> Cc: frowand.list@...il.com
> Acked-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>

Acked-by: Mark Rutland <mark.rutland@....com>

Thanks,
Mark.

> ---
> Changes since V3:
>  - Fixed node name in the example, suggested by Rob
> ---
>  .../devicetree/bindings/arm/arm-dsu-pmu.txt        | 27 ++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
> 
> diff --git a/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt b/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
> new file mode 100644
> index 000000000000..6efabba530f1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
> @@ -0,0 +1,27 @@
> +* ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU)
> +
> +ARM DyanmIQ Shared Unit (DSU) integrates one or more CPU cores
> +with a shared L3 memory system, control logic and external interfaces to
> +form a multicore cluster. The PMU enables to gather various statistics on
> +the operations of the DSU. The PMU provides independent 32bit counters that
> +can count any of the supported events, along with a 64bit cycle counter.
> +The PMU is accessed via CPU system registers and has no MMIO component.
> +
> +** DSU PMU required properties:
> +
> +- compatible	: should be one of :
> +
> +		"arm,dsu-pmu"
> +
> +- interrupts	: Exactly 1 SPI must be listed.
> +
> +- cpus		: List of phandles for the CPUs connected to this DSU instance.
> +
> +
> +** Example:
> +
> +dsu-pmu-0 {
> +	compatible = "arm,dsu-pmu";
> +	interrupts = <GIC_SPI 02 IRQ_TYPE_LEVEL_HIGH>;
> +	cpus = <&cpu_0>, <&cpu_1>;
> +};
> -- 
> 2.13.6
>