linux-kernel - Re: [PATCH 6/7] netdev: octeon-ethernet: Add Cavium Octeon III support.

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Message-ID: <521d6b21-b7f0-66e0-4b49-cf95d83452d1@caviumnetworks.com>
Date:   Thu, 2 Nov 2017 08:55:33 -0700
From:   David Daney <ddaney@...iumnetworks.com>
To:     Andrew Lunn <andrew@...n.ch>, David Daney <david.daney@...ium.com>
Cc:     linux-mips@...ux-mips.org, ralf@...ux-mips.org,
        James Hogan <james.hogan@...s.com>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel@...r.kernel.org,
        "Steven J. Hill" <steven.hill@...ium.com>,
        devicetree@...r.kernel.org, Carlos Munoz <cmunoz@...ium.com>
Subject: Re: [PATCH 6/7] netdev: octeon-ethernet: Add Cavium Octeon III
 support.

On 11/02/2017 05:43 AM, Andrew Lunn wrote:
[...]
>> +
>> +		i = atomic_inc_return(&pki_id);
>> +		pki_dev = platform_device_register_data(&new_dev->dev,
>> +							is_mix ? "octeon_mgmt" : "ethernet-mac-pki",
>> +							i, &platform_data, sizeof(platform_data));
>> +		dev_info(&pdev->dev, "Created %s %u: %p\n",
>> +			 is_mix ? "MIX" : "PKI", pki_dev->id, pki_dev);
> 
> Is there any change of these ethernet ports being used to connect to
> an Ethernet switch. We have had issues in the past with these sort of
> platform devices combined with DSA.
> 

There are only two possibilities.  The BGX MACs have a multiplexer that 
allows them to be connected to either the "octeon_mgmt" MIX packet 
processor, or to the "ethernet-mac-pki" PKI/PKO packet processor.  The 
SoCs supported by these drivers do not contain any hardware that would 
be considered an "Ethernet switch".

I'm not sure I fully understand what your question is though, so I may 
not have answered it.

David Daney