RE: [EXT] Re: [PATCH net-next 0/1] net: fec: add C45 MDIO read/write support

[Andy Duan]

From: Andrew Lunn <andrew@xxxxxxx>
> On Mon, Aug 19, 2019 at 05:11:14PM +0000, Marco Hartmann wrote:
> > As of yet, the Fast Ethernet Controller (FEC) driver only supports
> > Clause 22 conform MDIO transactions. IEEE 802.3ae Clause 45 defines a
> > modified MDIO protocol that uses a two staged access model in order to
> > increase the address space.
> >
> > This patch adds support for Clause 45 conform MDIO read and write
> > operations to the FEC driver.
> 
> Hi Marco
> 
> Do all versions of the FEC hardware support C45? Or do we need to make use
> of the quirk support in this driver to just enable it for some revisions of FEC?
> 
> Thanks
>         Andrew

i.MX legacy platforms like i.MX6/7 series, they doesn't support Write & Read Increment.
But for i.MX8MQ/MM series, it support C45 full features like Write & Read Increment.

For the patch itself, it doesn't support Write & Read Increment, so I think the patch doesn't
need to add quirk support.

Andy