From: "Xiaogeng (Shawn) Jin" <xjin@redswitch.com>
To: Ricardo Scop <scop@digitel.com.br>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: LXT972 FEC problem on MPC855
Date: Tue, 27 Aug 2002 17:19:31 -0700 [thread overview]
Message-ID: <3D6C1713.2050802@redswitch.com> (raw)
In-Reply-To: 02082619342400.01116@scop.digitel.com.br
>>In the code which defines 'phy_info_lxt971', it says that somehow LXT971
>>tells me that the link is down when the first read after power-up. So
>>you have to read MII_REG_SR to set 'fep->phy_status' accordingly. But in
>>my case, the read action occurred too early to wait till the link is up.
>>So what I did is to delay 5s before reading MII_REG_SR during opening
>>FEC device. I guess it takes the link a while to autonegotiate the speed.
>
> Hmm. I suppose PHY should interrupt when link status change, and therefore
> phy_status would be updated accordingly. So, maybe you have a problem with
> your board's PHY interrupt signal.
Yeah, I think so. So I have to check whether the PHY interrupt is
enabled or not. Thanks for your thoughts.
- Shawn.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2002-08-28 0:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-26 1:20 LXT972 FEC problem on MPC855 Xiaogeng (Shawn) Jin
2002-08-26 18:04 ` Xiaogeng (Shawn) Jin
2002-08-26 18:27 ` Wolfgang Denk
2002-08-26 19:17 ` Xiaogeng (Shawn) Jin
[not found] ` <3D6A9E57.1060308@redswitch.com>
2002-08-26 22:34 ` Ricardo Scop
2002-08-28 0:19 ` Xiaogeng (Shawn) Jin [this message]
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