linux-kernel - Re: [PATCH] powerpc: dts: t1040rdb: fix ports names for Seville Ethernet switch

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Date:   Fri, 31 Dec 2021 12:52:53 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Maxim Kiselev <bigunclemax@...il.com>
CC:     "fido_max@...ox.ru" <fido_max@...ox.ru>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc: dts: t1040rdb: fix ports names for Seville
 Ethernet switch

On Thu, Dec 30, 2021 at 04:24:38PM +0300, Maxim Kiselev wrote:
> Yes, I have T1040RDB ver.b (without SFP) and my front panel looks like this.
> 
>  +---------------------------------------------------------------------+
>  |                    NO SFP                                           |
>  |  +-------+-------+   |           +-------+-------+-------+-------+  |
>  |  | UART0 |  ETH1 |   |           |  ETH4 |  ETH6 |  ETH8 | ETH10 |  |
>  |  +-------+-------+  \|/  +-------+-------+-------+-------+-------+  |
>  |  | UART1 |  ETH0 |       |  ETH2 |  ETH3 |  ETH5 |  ETH7 | ETH9  |  |
>  +--+-------+-------+-------+-------+-------+-------+-------+-------+--+
> 
> Same as this pic
> https://habrastorage.org/files/433/d0f/057/433d0f05784f42b6acf9bb777970b1e9.jpg

I am not yet sure how to solve this. I don't really know what revision
my board is. I didn't know that there are multiple revisions that are
different in this regard, either. (one would expect that a Freescale/NXP
employee like me should know better, no?)
The reason why I'm not sure at all is because the SFP cage on my PCB
isn't populated either, yet the front panel is carved out for it.
See the attached picture. Do I have a rev B board mounted in a different
chassis (although it says T1040RDB)? Was there a board revision with an
actual SFP cage populated? I don't know, and I cannot really ask around
right now, since most everybody is on holiday. In the schematics for the
board rev B that I have, it says that the SFP cage should have been
populated, so this is strange (although it also says "T2081 ONLY!").

Download attachment "IMG_20211231_143715.jpg" of type "image/jpeg" (2607981 bytes)