Re: [PATCH v9 7/7] qcom-tgu: Add reset node to initialize

[Songwei Chai]

On 1/6/2026 6:16 PM, Suzuki K Poulose wrote:
> On 19/12/2025 06:59, Songwei Chai wrote:
> > Add reset node to initialize the value of
> > priority/condition_decode/condition_select/timer/counter nodes.
> >
> > Signed-off-by: Songwei Chai <songwei.chai@xxxxxxxxxxxxxxxx>
> > ---
> >   .../ABI/testing/sysfs-bus-amba-devices-tgu    |  7 ++
> >   drivers/hwtracing/qcom/tgu.c                  | 74 +++++++++++++++++++
> >   2 files changed, 81 insertions(+)
> >
> > diff --git a/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu b/ 
> > Documentation/ABI/testing/sysfs-bus-amba-devices-tgu
> > index 010eade0a1c5..0733b3e07b45 100644
> > --- a/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu
> > +++ b/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu
> > @@ -42,3 +42,10 @@ KernelVersion    6.19
> >   Contact:    Jinlong Mao <jinlong.mao@xxxxxxxxxxxxxxxx>, Songwei Chai 
> > <songwei.chai@xxxxxxxxxxxxxxxx>
> >   Description:
> >           (RW) Set/Get the counter value with specific step for TGU.
> > +
> > +What:        /sys/bus/amba/devices/<tgu-name>/reset_tgu
> > +Date:        December 2025
> > +KernelVersion    6.19
> > +Contact:    Jinlong Mao <jinlong.mao@xxxxxxxxxxxxxxxx>, Songwei Chai 
> > <songwei.chai@xxxxxxxxxxxxxxxx>
> > +Description:
> > +        (Write) Write 1 to reset the dataset for TGU.
> > diff --git a/drivers/hwtracing/qcom/tgu.c b/drivers/hwtracing/qcom/tgu.c
> > index d4210869556e..5a8c6af9b719 100644
> > --- a/drivers/hwtracing/qcom/tgu.c
> > +++ b/drivers/hwtracing/qcom/tgu.c
> > @@ -425,8 +425,82 @@ static ssize_t enable_tgu_store(struct device *dev,
>
>
> > +
> > +    dev_dbg(dev, "Coresight-TGU reset complete\n");
>
> Qualcomm-TGU ?Exactly! Thanks for reminder.>
> Suzuki