From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Lei Wei <quic_leiwei@quicinc.com>
Cc: Andrew Lunn <andrew@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Heiner Kallweit <hkallweit1@gmail.com>,
netdev@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, quic_kkumarcs@quicinc.com,
quic_suruchia@quicinc.com, quic_pavir@quicinc.com,
quic_linchen@quicinc.com, quic_luoj@quicinc.com,
srinivas.kandagatla@linaro.org, bartosz.golaszewski@linaro.org,
vsmuthu@qti.qualcomm.com, john@phrozen.org
Subject: Re: [PATCH net-next 3/5] net: pcs: qcom-ipq: Add PCS create and phylink operations for IPQ9574
Date: Fri, 8 Nov 2024 11:37:02 +0000 [thread overview]
Message-ID: <Zy333s8o77qE5F_-@shell.armlinux.org.uk> (raw)
In-Reply-To: <9b7def00-e900-4c5e-ba95-671bd1ef9240@quicinc.com>
On Fri, Nov 08, 2024 at 07:31:31PM +0800, Lei Wei wrote:
> On 11/6/2024 11:43 AM, Andrew Lunn wrote:
> > On Wed, Nov 06, 2024 at 11:16:37AM +0800, Lei Wei wrote:
> > > On 11/1/2024 9:21 PM, Andrew Lunn wrote:
> > > > How does Qualcomm SGMII AN mode differ from Cisco SGMII AN mode?
> > >
> > > Qualcomm SGMII AN mode extends Cisco SGMII spec Revision 1.8 by adding pause
> > > bit support in the SGMII word format. It re-uses two of the reserved bits
> > > 1..9 for this purpose. The PCS supports both Qualcomm SGMII AN and Cisco
> > > SGMII AN modes.
> >
> > Is Qualcomm SGMII AN actually needed? I assume it only works against a
> > Qualcomm PHY? What interoperability testing have you do against
> > non-Qualcomm PHYs?
>
> I agree that using Cisco SGMII AN mode as default is more appropriate,
> since is more commonly used with PHYs. I will make this change.
>
> Qualcomm SGMII AN is an extension of top of Cisco SGMII AN (only
> pause bits difference). So it is expected to be compatible with
> non-Qualcomm PHYs which use Cisco SGMII AN.
I believe Marvell have similar extensions.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2024-11-08 11:37 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-01 10:32 [PATCH net-next 0/5] Add PCS support for Qualcomm IPQ9574 SoC Lei Wei
2024-11-01 10:32 ` [PATCH net-next 1/5] dt-bindings: net: pcs: Add Ethernet PCS " Lei Wei
2024-11-02 13:34 ` Krzysztof Kozlowski
2024-11-04 11:01 ` Lei Wei
2024-11-01 10:32 ` [PATCH net-next 2/5] net: pcs: Add PCS driver " Lei Wei
2024-11-01 13:00 ` Andrew Lunn
2024-11-04 11:14 ` Lei Wei
2024-11-04 13:43 ` Andrew Lunn
2024-11-07 12:12 ` Lei Wei
2024-11-01 10:32 ` [PATCH net-next 3/5] net: pcs: qcom-ipq: Add PCS create and phylink operations for IPQ9574 Lei Wei
2024-11-01 13:21 ` Andrew Lunn
2024-11-01 16:31 ` Jakub Kicinski
2024-11-06 3:16 ` Lei Wei
2024-11-06 3:43 ` Andrew Lunn
2024-11-08 11:31 ` Lei Wei
2024-11-08 11:37 ` Russell King (Oracle) [this message]
2024-11-08 13:24 ` Andrew Lunn
2024-11-12 12:48 ` Lei Wei
2024-11-07 19:02 ` Russell King (Oracle)
2024-11-08 12:03 ` Lei Wei
2024-11-01 10:32 ` [PATCH net-next 4/5] net: pcs: qcom-ipq: Add USXGMII interface mode " Lei Wei
2024-11-01 10:32 ` [PATCH net-next 5/5] MAINTAINERS: Add maintainer for Qualcomm IPQ PCS driver Lei Wei
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=Zy333s8o77qE5F_-@shell.armlinux.org.uk \
--to=linux@armlinux.org.uk \
--cc=andrew@lunn.ch \
--cc=bartosz.golaszewski@linaro.org \
--cc=conor+dt@kernel.org \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=edumazet@google.com \
--cc=hkallweit1@gmail.com \
--cc=john@phrozen.org \
--cc=krzk+dt@kernel.org \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=quic_kkumarcs@quicinc.com \
--cc=quic_leiwei@quicinc.com \
--cc=quic_linchen@quicinc.com \
--cc=quic_luoj@quicinc.com \
--cc=quic_pavir@quicinc.com \
--cc=quic_suruchia@quicinc.com \
--cc=robh@kernel.org \
--cc=srinivas.kandagatla@linaro.org \
--cc=vsmuthu@qti.qualcomm.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.