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

From: Andrew Lunn <andrew@lunn.ch>

On Mon, Aug 19, 2019 at 05:11:14PM +0000, Marco Hartmann wrote:

quoted

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