From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <netdev-owner@vger.kernel.org>
Received: from vps0.lunn.ch ([185.16.172.187]:34279 "EHLO vps0.lunn.ch"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1752318AbeCROkz (ORCPT <rfc822;netdev@vger.kernel.org>);
        Sun, 18 Mar 2018 10:40:55 -0400
Date: Sun, 18 Mar 2018 15:40:53 +0100
From: Andrew Lunn <andrew@lunn.ch>
To: Frantisek Rysanek <Frantisek.Rysanek@post.cz>
Cc: netdev@vger.kernel.org
Subject: Re: HW question: i210 vs. BCM5461S over SGMII: no response from PHY
 to MDIO requests?
Message-ID: <20180318144053.GA1188@lunn.ch>
References: <5AAD92D1.16223.367B9940@Frantisek.Rysanek.post.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <5AAD92D1.16223.367B9940@Frantisek.Rysanek.post.cz>
Sender: netdev-owner@vger.kernel.org
List-ID: <netdev.vger.kernel.org>

> I'm not getting an ACK from the SFP, probably because I've got the 
> address and offset wrong and because I'd better use indirect access.
> There's some more work awaiting me...

Try address 0x50.

i2detect will probe all addresses for you, if you have a standard
Linux i2c bus.

      Andrew