From: Sudeep Holla <sudeep.holla@arm.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Besar Wicaksono <bwicaksono@nvidia.com>,
lorenzo.pieralisi@arm.com, lenb@kernel.org,
catalin.marinas@arm.com, will@kernel.org, guohanjun@huawei.com,
linux-tegra@vger.kernel.org, treding@nvidia.com,
jonathanh@nvidia.com, vsethi@nvidia.com,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] ACPI: ARM Performance Monitoring Unit Table (APMT) initial support
Date: Fri, 14 Oct 2022 11:55:50 +0100 [thread overview]
Message-ID: <20221014105550.zf7ufboxid3jryrz@bogus> (raw)
In-Reply-To: <CAJZ5v0iBZRZmV_oU+VurqxnVMbFN_ttqrL=cLh0sUH+=u0PYsw@mail.gmail.com>
On Fri, Sep 30, 2022 at 07:46:08PM +0200, Rafael J. Wysocki wrote:
> On Thu, Sep 29, 2022 at 2:29 AM Besar Wicaksono <bwicaksono@nvidia.com> wrote:
> >
> > ARM Performance Monitoring Unit Table describes the properties of PMU
> > support in ARM-based system. The APMT table contains a list of nodes,
> > each represents a PMU in the system that conforms to ARM CoreSight PMU
> > architecture. The properties of each node include information required
> > to access the PMU (e.g. MMIO base address, interrupt number) and also
> > identification. For more detailed information, please refer to the
> > specification below:
> > * APMT: https://developer.arm.com/documentation/den0117/latest
> > * ARM Coresight PMU:
> > https://developer.arm.com/documentation/ihi0091/latest
> >
> > The initial support adds the detection of APMT table and generic
> > infrastructure to create platform devices for ARM CoreSight PMUs.
> > Similar to IORT the root pointer of APMT is preserved during runtime
> > and each PMU platform device is given a pointer to the corresponding
> > APMT node.
> >
> > Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
>
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> for the change in bus.c, but as a side note, it would be good to move
> all of the ARM-specific initialization into one place, so it is not
> necessary to touch bus.c every time a new piece of it is added.
>
Agreed, I will look into that and move them all under single acpi_arm_init()
or something.
--
Regards,
Sudeep
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next prev parent reply other threads:[~2022-10-14 10:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 0:28 [PATCH v2] ACPI: ARM Performance Monitoring Unit Table (APMT) initial support Besar Wicaksono
2022-09-30 17:46 ` Rafael J. Wysocki
2022-10-07 16:49 ` Besar Wicaksono
2022-10-14 10:55 ` Sudeep Holla [this message]
2022-10-14 10:59 ` Sudeep Holla
2022-10-14 14:15 ` Lorenzo Pieralisi
2022-10-14 14:17 ` Lorenzo Pieralisi
2022-11-02 9:31 ` Lorenzo Pieralisi
2022-11-07 19:08 ` Will Deacon
2022-11-07 19:10 ` Will Deacon
2022-11-11 23:54 ` Besar Wicaksono
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