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

From: David Daney <ddaney@caviumnetworks.com>
To: Andrew Lunn <andrew@lunn.ch>, David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org, ralf@linux-mips.org,
	James Hogan <james.hogan@mips.com>,
	netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-kernel@vger.kernel.org,
	"Steven J. Hill" <steven.hill@cavium.com>,
	devicetree@vger.kernel.org, Carlos Munoz <cmunoz@cavium.com>
Subject: Re: [PATCH 6/7] netdev: octeon-ethernet: Add Cavium Octeon III support.
Date: Thu, 2 Nov 2017 08:55:33 -0700	[thread overview]
Message-ID: <521d6b21-b7f0-66e0-4b49-cf95d83452d1@caviumnetworks.com> (raw)
In-Reply-To: <20171102124339.GF4772@lunn.ch>

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