Netdev List
 help / color / mirror / Atom feed
From: Jacky Huang <jackyhuang@nvidia.com>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc: Jacky Huang <jackyhuang@nvidia.com>, Andrew Lunn <andrew@lunn.ch>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	Daniel Golle <daniel@makrotopia.org>,
	Vladimir Oltean <vladimir.oltean@nxp.com>,
	<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: Question: net: phy: realtek: RTL8211FS SGMII bridge mode support
Date: Fri, 10 Jul 2026 23:17:03 +0900	[thread overview]
Message-ID: <20260710141707.3280954-1-jackyhuang@nvidia.com> (raw)
In-Reply-To: <9d4bab68-6383-4b8d-a9d0-144b348e937c@bootlin.com>

Hi Maxime,

Thanks for the feedback! I had not considered the SFP or additional PHY case
before.

The hardware we plan to support has the SGMII side permanently connected to
an Ethernet switch.

    MAC - RGMII - RTL8211FS - SGMII - Ethernet switch

The switch is initialized from a configuration EEPROM. There is no SFP or
separate PHY on the SGMII link.

I will take another look at how the SGMII-side status and in-band aneg should
be handled.

In addition, after reviewing the board-level strap design, I found that the
intended mode may not always be selected reliably, so I still need to consider
a strap-override flow.

Thanks again,
Jacky

      reply	other threads:[~2026-07-10 14:18 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-09  3:52 Question: net: phy: realtek: RTL8211FS SGMII bridge mode support Jacky Huang
2026-07-09  9:57 ` Maxime Chevallier
2026-07-10 14:17   ` Jacky Huang [this message]

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=20260710141707.3280954-1-jackyhuang@nvidia.com \
    --to=jackyhuang@nvidia.com \
    --cc=andrew@lunn.ch \
    --cc=daniel@makrotopia.org \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=hkallweit1@gmail.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=maxime.chevallier@bootlin.com \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=vladimir.oltean@nxp.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