From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Wed, 14 Jan 2009 22:38:02 +0000 (-0800)
Subject: phylib: Fix Freescale TBI PHY detection
X-Git-Tag: v2.6.29-rc2~11^2~41
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f0d44ae310bc8eb0b6694e257015d8b24e1a357c;p=pandora-kernel.git

phylib: Fix Freescale TBI PHY detection

Freescale on-chip TBI PHYs reports PHY ID as 0x0, but as of

commit 3ee82383f0098a2e13acc8cf1be8e47512f41e5a
Author: Giulio Benetti <giulio.benetti@micronovasrl.com>
Date:   Thu Nov 13 21:53:13 2008 +0000

    phy: fix phy address bug

    PHYID returns 0xffff and not 0xffffffff when not found and in some
    case(at91sam9263) 0x0. Maybe this patch could be useful.

phy_device.c treats PHY ID == 0x0 as bogus IDs, and that results in
gianfar driver failure to see the TBI PHYs. This code snippet triggers:

	if (!priv->tbiphy) {
		printk(KERN_WARNING "SGMII mode requires that the device "
				"tree specify a tbi-handle\n");
		return;
	}

Although tbi-handle is specified in the device tree.

Btw, technically PHY ID == 0x0 is a valid ID (if we ever see a PHY
manufactured by Xerox :-).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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