linux-kernel - Re: [PATCH] coresight-etm3x: Add Qualcomm PFT v1.1 peripheral ID

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Message-ID: <CANLsYkw8xAGLzXpfD2Ppf3MJ8+sswNicUhBMQGkX7at+DecZMg@mail.gmail.com>
Date:	Fri, 22 May 2015 07:57:46 -0600
From:	Mathieu Poirier <mathieu.poirier@...aro.org>
To:	"Ivan T. Ivanov" <ivan.ivanov@...aro.org>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] coresight-etm3x: Add Qualcomm PFT v1.1 peripheral ID

On 21 May 2015 at 09:24, Ivan T. Ivanov <ivan.ivanov@...aro.org> wrote:
>
> On Thu, 2015-05-21 at 08:10 -0600, Mathieu Poirier wrote:
>> On 20 May 2015 at 09:02, Ivan T. Ivanov ivanov@...aro.org> wrote:
>> > Add Qualcomm's PFT v1.1 peripheral ID to supported devices.
>> > This device could be found at least in MSM8974 and APQ8064
>> > chipsets.
>> >
>> > Signed-off-by: Ivan T. Ivanov ivanov@...aro.org>
>> > ---
>> >  drivers/hwtracing/coresight/coresight-etm3x.c | 5 +++++
>> >  1 file changed, 5 insertions(+)
>> >
>> > diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c
>> > b/drivers/hwtracing/coresight/coresight-etm3x.c
>> > index 018a00f..e13520f 100644
>> > --- a/drivers/hwtracing/coresight/coresight-etm3x.c
>> > +++ b/drivers/hwtracing/coresight/coresight-etm3x.c
>> > @@ -1912,6 +1912,11 @@ static struct amba_id etm_ids[] = {
>> >                 .mask   = 0x0003ffff,
>> >                 .data   = "PTM 1.1",
>> >         },
>> > +       {       /* PFT 1.1 Qualcomm */
>> > +               .id     = 0x0003006f,
>> > +               .mask   = 0x0003ffff,
>> > +               .data   = "PFT 1.1",
>> > +       },
>> >         { 0, 0},
>> >  };
>>
>> I'm essentially good with that.  On the flip side "PFT" is the format
>> of the output generated by the tracer.  What is important to identify
>> is the type of tracer fitted to the SoC, either "ETM" or "PTM".
>
> I was unable to find PTM 1.1 in the ARM documentation and PFT
> v1.1 is supported only by PTM, if understand it correctly.
>
> Regards,
> Ivan

It does not change anything - PFT is the protocol and PTM is the tracer.
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