[PATCH 3/4] ARM: mvebu: NETGEAR ReadyNAS 104 .dts file cleanup

[Arnaud Ebalard]

Hi,

Jason Gunthorpe <jgunthorpe at obsidianresearch.com> writes:

> On Fri, Nov 22, 2013 at 09:07:01PM +0100, Arnaud Ebalard wrote:
>>  			mdio {
>>  				phy0: ethernet-phy at 0 {
>> +					compatible = "marvell,88e1318s";
>>  					reg = <0>;
>>  				};
>>  
>>  				phy1: ethernet-phy at 1 {
>> +					compatible = "marvell,88e1318s";
>>  					reg = <1>;
>>  				};
>>  			};
>
> Just an inquiry, are these compatible strings OK?
>
> Documentation/devicetree/bindings/net/phy.txt doesn't really give
> guidance.
>
> For self-discoverable busses I would expect to see a structured
> compatible string, or property, that encodes the phy-id - such as what
> the PCI binding does with vid/did:
>
> "compatible" Construct a list of names in most-specific to
>              least-specific order. The names shall be derived from
> 	     values of the Vendor ID, Device ID, Subsystem Vendor ID,
> 	     Subsystem ID, Revision ID and Class Code bytes, and shall
>              have the following form, and be placed in the list in the
>              following order:
>
>   pciVVVV,DDDD.SSSS.ssss.RR (1)
>
> So, I would think something like this:
>
> compatible = "ethernet-phy-id0141,0e90"; /* Marvell 88E1318 */

The compatible string I put is based on this discussion:

 http://www.spinics.net/lists/devicetree/msg11465.html

Now, considering the following:

arno at small:linux$ grep -R -88e1318s . | wc -l
0

and also the fact that *in my case* the kernel does its job
auto-detecting the PHY, I now also wonder how the kernel can
use that info and what I get by adding the compatible string.

Anyway, I'll wait for directions on how this should be fixed
before sending a v2 of the set.

Thanks for catching this, Jason.

Cheers,

a+