From: Andrew Lunn <andrew@lunn.ch>
To: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Vivien Didelot <vivien.didelot@savoirfairelinux.com>,
Florian Fainelli <f.fainelli@gmail.com>,
netdev@vger.kernel.org
Subject: Re: [PATCH] net: dsa: allow XAUI phy interface mode
Date: Fri, 8 Dec 2017 17:26:43 +0100 [thread overview]
Message-ID: <20171208162643.GD30846@lunn.ch> (raw)
In-Reply-To: <E1eNL91-0007uX-Ig@rmk-PC.armlinux.org.uk>
On Fri, Dec 08, 2017 at 04:04:59PM +0000, Russell King wrote:
> XGMII is a 32-bit bus plus two clock signals per direction. XAUI is
> four serial lanes per direction. The 88e6190 supports XAUI but not
> XGMII as it doesn't have enough pins. The same is true of 88e6176.
>
> Match on PHY_INTERFACE_MODE_XAUI for the XAUI port type, but keep
> accepting XGMII for backwards compatibility.
Hi Russell
The backwards compatibility is for the ZII devel C, the DSA link
between the two switches? I don't think there are any other boards
using this.
I will ask around, but i don't think we need to worry about backwards
compatibility. There is no region of flash set aside for the DT blob,
etc. I always TFTP boot using the one from the kernel, etc.
Andrew
next prev parent reply other threads:[~2017-12-08 16:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-08 16:04 [PATCH] net: dsa: allow XAUI phy interface mode Russell King
2017-12-08 16:26 ` Andrew Lunn [this message]
2017-12-08 16:42 ` Russell King - ARM Linux
2017-12-09 19:08 ` Andrew Lunn
2017-12-11 18:54 ` David Miller
2017-12-11 19:02 ` Russell King - ARM Linux
2017-12-12 8:35 ` Andrew Lunn
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