From: Sascha Hauer <s.hauer@pengutronix.de>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Russell King <rmk+kernel@armlinux.org.uk>,
devicetree@vger.kernel.org, kernel@pengutronix.de,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] net: ethernet: mvneta: add support for 2.5G DRSGMII mode
Date: Tue, 9 Jun 2020 14:55:35 +0200 [thread overview]
Message-ID: <20200609125535.GK11869@pengutronix.de> (raw)
In-Reply-To: <20200608145737.GG1006885@lunn.ch>
On Mon, Jun 08, 2020 at 04:57:37PM +0200, Andrew Lunn wrote:
> On Mon, Jun 08, 2020 at 09:47:16AM +0200, Sascha Hauer wrote:
> > The Marvell MVNETA Ethernet controller supports a 2.5 Gbps SGMII mode
> > called DRSGMII.
> >
> > This patch adds a corresponding phy-mode string 'drsgmii' and parses it
> > from DT. The MVNETA then configures the SERDES protocol value
> > accordingly.
> >
> > It was successfully tested on a MV78460 connected to a FPGA.
>
> Hi Sascha
>
> Is this really overclocked SGMII, or 2500BaseX? How does it differ
> from 2500BaseX, which mvneta already supports?
I think it is overclocked SGMII or 2500BaseX depending on the Port MAC
Control Register0 PortType setting bit.
As said to Russell we have a fixed link so nobody really cares if it's
SGMII or 2500BaseX. This boils down the patch to fixing the Serdes
configuration setting for 2500BaseX.
Sascha
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
next prev parent reply other threads:[~2020-06-09 12:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 7:47 [PATCH] net: ethernet: mvneta: add support for 2.5G DRSGMII mode Sascha Hauer
2020-06-08 14:57 ` Andrew Lunn
2020-06-09 12:55 ` Sascha Hauer [this message]
2020-06-09 13:12 ` Andrew Lunn
2020-06-09 13:14 ` Sascha Hauer
2020-06-08 16:08 ` Russell King - ARM Linux admin
2020-06-09 12:11 ` Sascha Hauer
-- strict thread matches above, loose matches on Subject: below --
2017-01-23 14:22 Jan Luebbe
2017-01-23 18:18 ` Andrew Lunn
[not found] ` <20170123181836.GO10895-g2DYL2Zd6BY@public.gmane.org>
2017-01-24 8:34 ` Jan Lübbe
2017-01-24 13:19 ` Andrew Lunn
[not found] ` <20170123142206.5390-1-jlu-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2017-01-25 17:38 ` David Miller
[not found] ` <20170125.123806.790914338952471404.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2017-01-26 8:17 ` Jan Lübbe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200609125535.GK11869@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=andrew@lunn.ch \
--cc=devicetree@vger.kernel.org \
--cc=kernel@pengutronix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=rmk+kernel@armlinux.org.uk \
--cc=thomas.petazzoni@bootlin.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).