Re: [PATCH v2 1/3] perf/dwc_pcie: Add support for Picoheart vendor devices

[Niklas Cassel]

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