[PATCH v3 10/12] net: pcs: add driver for MediaTek SGMII PCS

[Russell King (Oracle)]

On Thu, Feb 09, 2023 at 11:34:47PM +0000, Daniel Golle wrote:
> The SGMII core found in several MediaTek SoCs is identical to what can
> also be found in MediaTek's MT7531 Ethernet switch IC.
> As this has not always been clear, both drivers developed different
> implementations to deal with the PCS.
> 
> Add a dedicated driver, mostly by copying the code now found in the
> Ethernet driver. The now redundant code will be removed by a follow-up
> commit.
> 
> Tested-by: Bjørn Mork <bjorn at mork.no>
> Signed-off-by: Daniel Golle <daniel at makrotopia.org>

Comments on v2 also apply to this version.

(this is mainly for net-next tracking review purposes.)
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