From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mugunthan V N <mugunthanvnm@ti.com>
Date: Mon, 1 Jun 2015 14:40:40 +0530
Subject: [U-Boot] cpsw not working with slave2 port defined only
In-Reply-To: <CAAfyv34Bi=6shMy39CXj0VnqMhV=byEmnTqsr0T_pkWgV7yXVg@mail.gmail.com>
References: <CAAfyv34Bi=6shMy39CXj0VnqMhV=byEmnTqsr0T_pkWgV7yXVg@mail.gmail.com>
Message-ID: <556C2190.5070803@ti.com>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

On Tuesday 26 May 2015 01:00 AM, Belisko Marek wrote:
> Hi,
> 
> I have custom am33xx board with phy connected to slave2 port. I
> copy'n'paste cpsw setup from /board/BuR/common/common.c but I'm using
> only slave2 port (RMII mode) so my cpsw_slave_data looks like:
> 
> static struct cpsw_slave_data cpsw_slaves[] = {
> {
>                  .slave_reg_ofs  = 0x308,
>                  .sliver_reg_ofs = 0xdc0,
>                  .phy_addr       = 4,
> },
> };
> 
> with this configuration cpsw driver can detect link but it cannot
> establish any communication (tested with dhcp command). When I add to
> cpsw_slaves dummy slave1 port definition (with e.g. phy_addr = 0) it
> start working.
> 
> mdio bus is working fine (tested with mdio list + mdio read). Pinmux
> is good as it works with dummy slave1 config. Any ideas what I'm doing
> wrong or why only slave2 port cannot be used? I grep whole source code
> but all boards using cpsw use slave1 only or slave1/slave2
> configurations. Many thanks.
> 

Do not remove slave 0 structures and have no of slaves as 2 and set
active slave to 1 as done in the following commit
4c8014b9429b593c28fbf0384a6c7ded8587806a in mainline u-boot.

The driver uses the slave numbers to add mac address to ALE, which will
fail when you remove slaves from the salve structures.

Regards
Mugunthan V N