linux-kernel - Re: [PATCH] net: axienet: add of_phy_connect call for XAE_PHY_TYPE

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Date:   Tue, 04 Jul 2017 09:24:03 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Alvaro Gamez Machado <alvaro.gamez@...ent.com>
CC:     Anirudha Sarangi <anirudh@...inx.com>,
        John Linn <John.Linn@...inx.com>,
        Michal Simek <michal.simek@...inx.com>,
        Sören Brinkmann <soren.brinkmann@...inx.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: axienet: add of_phy_connect call for XAE_PHY_TYPE_MII case

On July 2, 2017 3:19:14 AM PDT, Alvaro Gamez Machado <alvaro.gamez@...ent.com> wrote:
>On Fri, Jun 30, 2017 at 10:30:38AM -0700, Florian Fainelli wrote:
>> On 06/30/2017 02:25 AM, Alvaro Gamez Machado wrote:
>> >  	if (lp->phy_node) {
>> > -		if (lp->phy_type == XAE_PHY_TYPE_GMII) {
>> > +		if (lp->phy_type == XAE_PHY_TYPE_MII) {
>> > +			phydev = of_phy_connect(lp->ndev, lp->phy_node,
>> > +						axienet_adjust_link, 0,
>> > +						PHY_INTERFACE_MODE_MII);
>> > +		} else if (lp->phy_type == XAE_PHY_TYPE_GMII) {
>> >  			phydev = of_phy_connect(lp->ndev, lp->phy_node,
>> >  						axienet_adjust_link, 0,
>> >  						PHY_INTERFACE_MODE_GMII);
>> 
>> Seems like this could be simplified even further if the values of
>> lp->phy_type directly mapped to those of phy_interface_t.
>
>Sadly, that's not the case. PHY_INTERFACE_MODE_* belong to a enum of
>twenty
>different values, of which only _MII and _GMII overlap with XAW_PHY_*
>values, but XAE_PHY_TYPE_RGMII_2_0 doesn't match
>PHY_INTERFACE_MODE_RGMII_ID.

There are four different rgmii types to account for rx or tx delay, is not there one that really matches? If the driver is using of_get_phy_mode() to retrieve the standard 'phy-mode' / 'phy-connection-type' values then this internal representation is not needed anymore.

-- 
Florian