From: Niklas Cassel <cassel@kernel.org>
To: Yicong Yang <yang.yicong@picoheart.com>
Cc: xueshuai@linux.alibaba.com, renyu.zj@linux.alibaba.com,
will@kernel.org, mark.rutland@arm.com, jic23@kernel.org,
bhelgaas@google.com, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, jingoohan1@gmail.com,
mani@kernel.org, juwenlong@picoheart.com,
geshijian@picoheart.com, douyufan@picoheart.com
Subject: Re: [PATCH v2 1/3] perf/dwc_pcie: Add support for Picoheart vendor devices
Date: Tue, 30 Jun 2026 22:03:35 +0200 [thread overview]
Message-ID: <akQhFxd-JT1ENxNW@ryzen> (raw)
In-Reply-To: <9d2e0676-0211-49a8-b63a-2a769211775e@picoheart.com>
On Wed, Jul 01, 2026 at 01:01:38AM +0800, Yicong Yang wrote:
> On 6/30/26 7:31 PM, Niklas Cassel wrote:
> >
> > Could you please point to the in-tree device driver for this
> > DWC based "picoheart" PCIe controller?
> >
> > $ git grep -i picoheart drivers/pci/controller/dwc/
> > <nothing>
> >
> > It feels wrong to add PMU support for a PCIe controller,
> > if that PCIe controller does not have support in mainline.
> >
>
> we're using ACPI thus go through the common ACPI PCI code
> for PCIe controller itself. it's same to the already listed
> alibaba and ampere here (suppose they're also ACPI based system).
I see, thank you for the clarification.
Kind regards,
Niklas
next prev parent reply other threads:[~2026-06-30 20:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-29 9:27 [PATCH v2 0/3] New vendor support and optimizations for DWC PCIe PMU Yicong Yang
2026-06-29 9:27 ` [PATCH v2 1/3] perf/dwc_pcie: Add support for Picoheart vendor devices Yicong Yang
2026-06-29 17:43 ` Bjorn Helgaas
2026-06-30 3:35 ` Shuai Xue
2026-06-30 17:04 ` Yicong Yang
2026-06-30 11:31 ` Niklas Cassel
2026-06-30 17:01 ` Yicong Yang
2026-06-30 20:03 ` Niklas Cassel [this message]
2026-06-29 9:27 ` [PATCH v2 2/3] perf/dwc_pcie: Support narrowed time-based counter for long time monitoring Yicong Yang
2026-06-30 8:50 ` Shuai Xue
2026-06-30 17:18 ` Yicong Yang
2026-06-29 9:27 ` [PATCH v2 3/3] perf/dwc_pcie: Convert to faux device interface Yicong Yang
2026-06-30 9:19 ` Shuai Xue
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