Date: Mon, 22 Oct 2012 22:29:47 GMT From: Adrian Chadd <adrian@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/172968: [arswitch] probe/attach occasionally fails to find a PHY Message-ID: <201210222229.q9MMTlro003131@red.freebsd.org> Resent-Message-ID: <201210222230.q9MMU1iQ001623@freefall.freebsd.org>
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>Number: 172968 >Category: misc >Synopsis: [arswitch] probe/attach occasionally fails to find a PHY >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Oct 22 22:30:01 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Adrian Chadd >Release: -HEAD, mips >Organization: >Environment: >Description: Occasionally the probe/attach of the AR8316 switch fails - the actual device doesn't fail, but the mdiobus it exposes doesn't always find a PHY. This means that sometimes one of the on-board arge interfaces (which is linked to the stand-alone PHY) can't find a PHY and it simply fails to attach. >How-To-Repeat: Just keep rebooting an atheros MIPS board with an onboard AR8x16 switch. >Fix: Luis Otavio D'Souza found that disabling the page cache feature fixes it. Ie, always set the page id before read/writing the switch register. >Release-Note: >Audit-Trail: >Unformatted:
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