[OpenWrt-Devel] Second RGMII ethernet on MT7621?

Roman Yeryomin roman at advem.lv
Mon Apr 30 16:05:35 EDT 2018

On 2018-04-30 22:10, John Crispin wrote:
> On 30/04/18 19:08, Bjørn Mork wrote:
>> Hello,
>> I have been playing with a ZyXEL WAP6805, which appears to be an OEM
>> version of the https://wikidevi.com/wiki/ZyXEL_WAP6806_(Armor_X1)
>> This thing has an oversized mini-PCIe Quantenna module.  Or that's the
>> mechanical form factor.  The connection between the MT7621 and the
>> Quantenna QT3840BC appears to be RGMII, ref the OEM bootlog below.
>> Notice how this brings up both eth2 and eth3 and add them to the br0
>> bridge.  The Quantenna module loads u-boot and a firmware image using
>> tftp, and it is then managed over the ethernet interface.
>> So I was looking for a quick way to enable the second ethernet port on
>> the MT7621, but can't find any.  Am I looking the wrong place, or am I
>> right that the support for this is still lacking?  Any idea how many
>> bits and pieces are missing?
>> Bjørn
> Hi Bjørn
> making gmac2 work s not trivial with the current driver. however
> making the upstream mtk_eth_soc driver work on mt7621 is pretty easy i
> think and will give you dual gmac support. upstream only supports
> mt7623 arm atm. its been on my todo list for a while but i simply have
> not been able to find the 2-3 days required to make it work.

John, include me in testing list when you do :)

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