From: Nick Hu <nickhu@andestech.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: "Greentime Ying-Han Hu(胡英漢)" <greentime@andestech.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"deanbo422@gmail.com" <deanbo422@gmail.com>,
"peterz@infradead.org" <peterz@infradead.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"acme@kernel.org" <acme@kernel.org>,
"alexander.shishkin@linux.intel.com"
<alexander.shishkin@linux.intel.com>,
"jolsa@redhat.com" <jolsa@redhat.com>,
"namhyung@kernel.org" <namhyung@kernel.org>,
"arnd@arndb.de" <arnd@arndb.de>,
"sboyd@codeaurora.org" <sboyd@codeaurora.org>,
"geert@linux-m68k.org" <geert@linux-m68k.org>,
"Zong Zong-Xian Li(李宗憲)" <zong@andestech.com>,
"ebiederm@xmission.com" <ebiederm@xmission.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"pombredanne@nexb.com" <pombredanne@nexb.com>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"kstewart@linuxfoundation.org" <kstewart@linuxfoundation.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"green.hu@gmail.com" <green.hu@gmail.com>
Subject: Re: [PATCH 5/5] nds32: Add document for NDS32 PMU.
Date: Mon, 22 Oct 2018 18:23:08 +0800 [thread overview]
Message-ID: <20181022102308.GD24110@andestech.com> (raw)
In-Reply-To: <20181018143132.vhhc6qpz4sooljlj@lakrids.cambridge.arm.com>
Hi Mark,
On Thu, Oct 18, 2018 at 10:31:32PM +0800, Mark Rutland wrote:
> 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@andestech.com>
> > ---
> > 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".
>
In nds32 V3, all of our CPU have PMU.
So I will change the string to 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?
>
There is only overflow interrupt for performance couner in nds32 V3.
I will modified the driver and prepare another patch.
Thanks!
> Thanks,
> Mark.
Thank you for replying the patch set so quickly.
I will prepare the next patch set for it.
Thanks,
Nick
next prev parent reply other threads:[~2018-10-22 10:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-18 8:43 [PATCH 0/5] nds32: Perf support Nickhu
2018-10-18 8:43 ` [PATCH 1/5] nds32: Perf porting Nickhu
2018-10-18 14:23 ` Mark Rutland
2018-10-22 10:18 ` Nick Hu
2018-10-22 13:15 ` Mark Rutland
2018-10-18 8:43 ` [PATCH 2/5] nds32: Fix bug in bitfield.h Nickhu
2018-10-18 14:26 ` Mark Rutland
2018-10-22 10:19 ` Nick Hu
2018-10-18 8:43 ` [PATCH 3/5] nds32: Add perf call-graph support Nickhu
2018-10-18 8:43 ` [PATCH 4/5] nds32: Fix perf multiple events map to same counter Nickhu
2018-10-18 14:29 ` Mark Rutland
2018-10-22 10:20 ` Nick Hu
2018-10-18 8:43 ` [PATCH 5/5] nds32: Add document for NDS32 PMU Nickhu
2018-10-18 14:31 ` Mark Rutland
2018-10-22 10:23 ` Nick Hu [this message]
2018-10-22 13:17 ` Mark Rutland
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