netdev - Re: [PATCH net-next 1/3] net: ethernet: mediatek: add extension of phy-mode for TRGMII

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Date:   Wed, 21 Sep 2016 15:33:09 +0800
From:   Sean Wang <sean.wang@...iatek.com>
To:     <f.fainelli@...il.com>
CC:     <john@...ozen.org>, <davem@...emloft.net>, <nbd@...nwrt.org>,
        <netdev@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <keyhaede@...il.com>
Subject: Re: [PATCH net-next 1/3] net: ethernet: mediatek: add extension of phy-mode for TRGMII

Date: Tue, 20 Sep 2016 14:23:24 -0700, Florian Fainelli <f.fainelli@...il.com> wrote:
>On 09/20/2016 12:59 AM, sean.wang@...iatek.com wrote:
>> From: Sean Wang <sean.wang@...iatek.com>
>> 
>> adds PHY-mode "trgmii" as an extension for the operation
>> mode of the PHY interface, TRGMII can be compatible with
>> RGMII, so the extended mode doesn't really have effects on
>> the target MAC and PHY, is used as the indication if the
>> current MAC is connected to an internal switch or external
>> PHY respectively by the given configuration on the board and
>> then to perform the corresponding setup on TRGMII hardware
>> module.
>
>Based on my googling, it seems like Turbo RGMII is a Mediatek-specific
>thing for now, but this could become standard and used by other vendors
>at some point, so I would be inclined to just extend the phy-mode
>property to support trgmii as another interface type.
>
>If you do so, do you also mind proposing an update to the Device Tree
>specification:
>
>https://www.devicetree.org/specifications/
>
>Thanks!

I am willing to do the these thing

1)
in the next version, I will extend rgmii mode as
another interface type as PHY_INTERFACE_MODE_TRGMII
defined in linux/phy.h instead of extension only inside
the current driver. This change also helps to save some code.

2)
I send another separate patch for updating the Device Tree
specification about TRGMII adding description

are these all okay for you?