From: Andrew Lunn <andrew@lunn.ch>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: John Crispin <john@phrozen.org>,
Matthew Hagan <mnhagan88@gmail.com>,
Jakub Kicinski <kuba@kernel.org>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Jonathan McDowell <noodles@earth.li>,
Rob Herring <robh+dt@kernel.org>,
devicetree@vger.kernel.org
Subject: Re: [PATCH 2/2] dt-bindings: net: dsa: qca8k: Add PORT0_PAD_CTRL properties
Date: Sat, 18 Jul 2020 16:44:35 +0200 [thread overview]
Message-ID: <20200718144435.GA1375379@lunn.ch> (raw)
In-Reply-To: <20200718132011.GQ1551@shell.armlinux.org.uk>
On Sat, Jul 18, 2020 at 02:20:11PM +0100, Russell King - ARM Linux admin wrote:
> On Fri, Jul 17, 2020 at 10:44:19PM +0200, John Crispin wrote:
> > in regards to the sgmii clk skew. I never understood the electrics fully I
> > am afraid, but without the patch it simply does not work. my eletcric foo is
> > unfortunately is not sufficient to understand the "whys" I am afraid.
>
> Do you happen to know what frequency the clock is? Is it 1.25GHz or
> 625MHz? It sounds like it may be 1.25GHz if the edge is important.
I'm also a bit clueless when it comes to these systems.
I thought the clock was embedded into the SERDES signal? You recover
it from the signal?
Florian, does the switch have a separate clock input/output?
Andrew
next prev parent reply other threads:[~2020-07-18 14:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2e1776f997441792a44cd35a16f1e69f848816ce.1594668793.git.mnhagan88@gmail.com>
2020-07-13 20:50 ` [PATCH 2/2] dt-bindings: net: dsa: qca8k: Add PORT0_PAD_CTRL properties Matthew Hagan
2020-07-16 22:09 ` Jakub Kicinski
2020-07-16 22:32 ` Andrew Lunn
2020-07-17 19:26 ` Matthew Hagan
2020-07-17 20:02 ` Florian Fainelli
2020-07-18 13:00 ` Vladimir Oltean
2020-07-21 1:59 ` Rob Herring
2020-07-16 22:38 ` Vladimir Oltean
2020-07-17 7:49 ` Jonathan McDowell
2020-07-17 20:29 ` Matthew Hagan
2020-07-17 20:39 ` Florian Fainelli
2020-07-17 20:48 ` John Crispin
2020-07-17 20:44 ` John Crispin
2020-07-18 13:20 ` Russell King - ARM Linux admin
2020-07-18 14:44 ` Andrew Lunn [this message]
2020-07-18 15:08 ` Russell King - ARM Linux admin
2020-07-18 15:34 ` Matthew Hagan
2020-07-16 22:19 ` Florian Fainelli
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