Re: [PATCH v3 6/7] mfd: Add support for LAN966x PCI device

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Hi Rob, Conor,

On Thu, 11 Jul 2024 14:33:26 -0600
Rob Herring <robh@xxxxxxxxxx> wrote:

> On Thu, Jul 11, 2024 at 1:08 PM Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On Thu, Jul 11, 2024 at 06:44:38PM +0200, Herve Codina wrote:  
> > > Hi Lee,
> > >
> > > On Thu, 11 Jul 2024 16:29:52 +0100
> > > Lee Jones <lee@xxxxxxxxxx> wrote:
> > >  
> > > > On Thu, 27 Jun 2024, Herve Codina wrote:
> > > >  
> > > > > Add a PCI driver that handles the LAN966x PCI device using a device-tree
> > > > > overlay. This overlay is applied to the PCI device DT node and allows to
> > > > > describe components that are present in the device.
> > > > >
> > > > > The memory from the device-tree is remapped to the BAR memory thanks to
> > > > > "ranges" properties computed at runtime by the PCI core during the PCI
> > > > > enumeration.
> > > > >
> > > > > The PCI device itself acts as an interrupt controller and is used as the
> > > > > parent of the internal LAN966x interrupt controller to route the
> > > > > interrupts to the assigned PCI INTx interrupt.  
> > > >
> > > > Not entirely sure why this is in MFD.  
> > >
> > > This PCI driver purpose is to instanciate many other drivers using a DT
> > > overlay. I think MFD is the right subsystem.  
> 
> It is a Multi-function Device, but it doesn't appear to use any of the
> MFD subsystem. So maybe drivers/soc/? Another dumping ground, but it
> is a driver for an SoC exposed as a PCI device.
> 

In drivers/soc, drivers/soc/microchip/ could be the right place.

Conor, are you open to have the PCI LAN966x device driver in
drivers/soc/microchip/ ?

Best regards,
Hervé





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