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Date: Mon, 20 Dec 2010 12:49:11 -0600
From: Scott Wood <scottwood@freescale.com>
To: "Dry, Craig" <cdry@mc.com>
Subject: Re: P2020 with BCM53115
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On Mon, 20 Dec 2010 13:08:55 -0500
"Dry, Craig" <cdry@mc.com> wrote:

> I am trying to bring up a P2020 board which uses the Broadcom BCM53115 switch in unmanaged mode.  The board is patterned after the P2020RDB, except the Vitesse switch has been replaced with a BCM53115. There is no MDIO connection to the switch, but there is  an SPI connection available if needed.
> 
> When running Uboot, the BCM53115 works just fine, as I am able to download the Linux Kernel and P2020RDB.dtb across the network without issue.   But as Linux is booting up, I get the message:
> 
> mdio_bus mdio@ffe24520: error probing PHY at address 0
> mdio_bus mdio@ffe24520: error probing PHY at address 1
> 
> I expect these errors occur because the P2020RDB.dts file has these entries.
> 
> I'm not sure what to try next to get Linux to use the BCM53115 switch in unmanaged mode.

See the fixed-link property in
Documentation/powerpc/dts-bindings/fsl/tsec.txt

-Scott