netdev - RE: [PATCH 2/3] net: phy: vitesse: Add support for VSC73xx

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Message-ID: <9235D6609DB808459E95D78E17F2E43D40DD511D@CHN-SV-EXMX02.mchp-main.com>
Date:   Fri, 15 Jun 2018 19:24:58 +0000
From:   <Woojung.Huh@...rochip.com>
To:     <f.fainelli@...il.com>, <linus.walleij@...aro.org>,
        <andrew@...n.ch>, <vivien.didelot@...oirfairelinux.com>,
        <UNGLinuxDriver@...rochip.com>
CC:     <netdev@...r.kernel.org>, <openwrt-devel@...ts.openwrt.org>,
        <lede-dev@...ts.infradead.org>, <juhosg@...nwrt.org>
Subject: RE: [PATCH 2/3] net: phy: vitesse: Add support for VSC73xx

Hi Florian,

> On 06/14/2018 05:35 AM, Linus Walleij wrote:
> > The VSC7385, VSC7388, VSC7395 and VSC7398 are integrated
> > switch/router chips for 5+1 or 8-port switches/routers. When
> > managed directly by Linux using DSA we need to do a special
> > set-up "dance" on the PHY. Unfortunately these sequences
> > switches the PHY to undocumented pages named 2a30 and 52b6
> > and does undocumented things. It is described by these opaque
> > sequences also in the reference manual. This is a best
> > effort to integrate it anyways.
> >
> > Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> 
> Probably as good as it can get given the information you have access to.
> Maybe the guys at Mircochip could help, adding them.

Microchip have completed the acquisition of Microsemi last months. It will take some time to get access to the right data. 
Hope we can help soon.

Thanks.
Woojung