From: Andrew Lunn <andrew@lunn.ch>
To: Marek Behun <marek.behun@nic.cz>
Cc: Landen Chao <landen.chao@mediatek.com>,
f.fainelli@gmail.com, vivien.didelot@savoirfairelinux.com,
matthias.bgg@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com,
devicetree@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
davem@davemloft.net, sean.wang@mediatek.com,
opensource@vdorst.com, frank-w@public-files.de
Subject: Re: [PATCH net-next 4/6] net: dsa: mt7530: Add the support of MT7531 switch
Date: Tue, 10 Dec 2019 23:02:31 +0100 [thread overview]
Message-ID: <20191210220231.GA30053@lunn.ch> (raw)
In-Reply-To: <20191210213351.2df6acbf@nic.cz>
On Tue, Dec 10, 2019 at 09:33:51PM +0100, Marek Behun wrote:
> On Tue, 10 Dec 2019 17:35:57 +0100
> Andrew Lunn <andrew@lunn.ch> wrote:
>
> > On Tue, Dec 10, 2019 at 04:14:40PM +0800, Landen Chao wrote:
> > > Add new support for MT7531:
> > >
> > > MT7531 is the next generation of MT7530. It is also a 7-ports switch with
> > > 5 giga embedded phys, 2 cpu ports, and the same MAC logic of MT7530. Cpu
> > > port 6 only supports HSGMII interface. Cpu port 5 supports either RGMII
> > > or HSGMII in different HW sku.
> >
> > Hi Landen
> >
> > Looking at the code, you seem to treat HSGMII as 2500Base-X. Is this
> > correct? Or is it SGMII over clocked to 2.5Gbps?
> >
> > Andrew
>
> How would that work? Would 10 and 100 be overclocked to 25 and 250?
No. SGMII clocked up to 2.5G does not support any of the lower
speeds. And inband signalling does not make much sense, the control
word is all wrong.
Andrew
next prev parent reply other threads:[~2019-12-10 22:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 8:14 [PATCH net-next 0/6] net-next: dsa: mt7530: add support for MT7531 Landen Chao
2019-12-10 8:14 ` [PATCH net-next 1/6] net: dsa: mt7530: Refine message in Kconfig Landen Chao
2019-12-12 3:41 ` Florian Fainelli
2019-12-10 8:14 ` [PATCH net-next 2/6] net: dsa: mt7530: Extend device data ready for adding a new hardware Landen Chao
2019-12-12 3:45 ` Florian Fainelli
2019-12-12 15:03 ` Landen Chao
2019-12-12 15:05 ` Landen Chao
2019-12-10 8:14 ` [PATCH net-next 3/6] dt-bindings: net: dsa: add new MT7531 binding to support MT7531 Landen Chao
2019-12-10 16:20 ` Andrew Lunn
2019-12-11 14:10 ` Landen Chao
2019-12-12 3:46 ` Florian Fainelli
2019-12-10 8:14 ` [PATCH net-next 4/6] net: dsa: mt7530: Add the support of MT7531 switch Landen Chao
2019-12-10 16:35 ` Andrew Lunn
2019-12-10 17:05 ` Vladimir Oltean
2019-12-10 20:33 ` Marek Behun
2019-12-10 22:02 ` Andrew Lunn [this message]
2019-12-11 17:35 ` Landen Chao
2019-12-10 16:44 ` Andrew Lunn
2019-12-11 18:18 ` Landen Chao
2019-12-11 19:27 ` Andrew Lunn
2019-12-12 15:04 ` Landen Chao
2019-12-10 16:48 ` Andrew Lunn
2019-12-11 17:48 ` Landen Chao
2019-12-12 3:57 ` Florian Fainelli
2019-12-12 16:24 ` Landen Chao
2019-12-10 8:14 ` [PATCH net-next 5/6] arm64: dts: mt7622: add mt7531 dsa to mt7622-rfb1 board Landen Chao
2019-12-10 16:51 ` Andrew Lunn
2019-12-11 18:27 ` Landen Chao
2019-12-10 8:14 ` [PATCH net-next 6/6] arm64: dts: mt7622: add mt7531 dsa to bananapi-bpi-r64 board Landen Chao
2019-12-10 11:37 ` Aw: [PATCH net-next 0/6] net-next: dsa: mt7530: add support for MT7531 Frank Wunderlich
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