netdev - Re: [PATCH net-next v3 5/5] net-next: dsa: add dsa support for Mediatek MT7530 switch

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Message-ID: <CA+PODjpRgZuSeqtCV3+LAHx4kMA8deA5ABzH-Gv7XjhEZY_H=w@mail.gmail.com>
Date:   Wed, 24 May 2017 17:44:35 +0300
From:   Andrey Melnikov <temnota.am@...il.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Sean Wang <sean.wang@...iatek.com>
Subject: Re: [PATCH net-next v3 5/5] net-next: dsa: add dsa support for
 Mediatek MT7530 switch

2017-05-24 16:20 GMT+03:00 Andrew Lunn <andrew@...n.ch>:
>> What about JUMBO frames and large MTU support? devlink support?
>
> To get the driver merged, it is better to start small, a minimal set
> of features. Other features can be added later. If these features are
> important to you, please feel free to submit patches.

There is no documentation from mediatek about this feature. Driver
from SDK v4.x contains only switching 19'th bit in GDMA1_FWD_CFG and
nothing more.
So, how to write patches? Peeking random bits in random SOC config registers?