Re: [PATCH] net/phy/vitesse: Configure RGMII skew on VSC8601, if needed

From: David Miller
Date: Tue Nov 15 2016 - 22:12:27 EST


From: Alex <alex.g@xxxxxxxxxxxx>
Date: Mon, 14 Nov 2016 13:54:57 -0800

>
>
> On 11/14/2016 01:25 PM, Florian Fainelli wrote:
>> On 11/14/2016 01:18 PM, David Miller wrote:
>>> From: Alexandru Gagniuc <alex.g@xxxxxxxxxxxx>
>>> Date: Sat, 12 Nov 2016 15:32:13 -0800
>>>
>>>> + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
>>>> + ret = vsc8601_add_skew(phydev);
>>>
>>> I think you should use phy_interface_is_rgmii() here.
>>>
>>
>> This would include all RGMII modes, here I think the intent is to
>> check
>> for PHY_INTERFACE_MODE_RGMII_ID and PHY_INTERFACE_MODE_RGMII_TXID (or
>> RXID),
>
> That is correct.
>
>> Alexandru, what direction does the skew settings apply to?
>
> It applies a skew in both TX and RX directions.

Please repost your patch, making the intent clear either in the
commit message or a code comment.

Thanks.