On Thu, Oct 18, 2018 at 04:43:17PM +0800, Nickhu wrote:
> The document for how to add NDS32 PMU
> in devicetree.
>
> Signed-off-by: Nickhu <nickhu@xxxxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/nds32/pmu.txt | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/nds32/pmu.txt
>
> diff --git a/Documentation/devicetree/bindings/nds32/pmu.txt b/Documentation/devicetree/bindings/nds32/pmu.txt
> new file mode 100644
> index 000000000000..02762b850e59
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nds32/pmu.txt
> @@ -0,0 +1,17 @@
> +* NDS32 Performance Monitor Units
> +
> +NDS32 core have a PMU for counting cpu and cache events like cache misses.
> +The NDS32 PMU representation in the device tree should be done as under:
> +
> +Required properties:
> +
> +- compatilbe :
> + "andestech,atcpmu"
Which CPUs have this PMU?
I expected more specific strings, e.g. "andestech,n13-pmu" and/or
"andestech,andestech,nds32v3-pmu".
> +
> +- interrupts : The interrupt number for NDS32 PMU is 13.
> +
> +Example:
> +pmu{
> + compatible = "andestech,atcpmu";
> + interrupts = <13>;
> +}
The driver tried to find multiple interrupts. Is there only a single
interrupt in all cases?
Thanks,
Mark.
