netdev - Re: [PATCH net-next 1/6] phy: add 2.5G SGMII mode to the phy

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Date:   Thu, 28 Dec 2017 06:16:51 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Antoine Tenart <antoine.tenart@...e-electrons.com>,
        Andrew Lunn <andrew@...n.ch>
Cc:     thomas.petazzoni@...e-electrons.com, ymarkman@...vell.com,
        jason@...edaemon.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux@...linux.org.uk, kishon@...com,
        nadavh@...vell.com, miquel.raynal@...e-electrons.com,
        gregory.clement@...e-electrons.com, stefanc@...vell.com,
        mw@...ihalf.com, davem@...emloft.net,
        linux-arm-kernel@...ts.infradead.org,
        sebastian.hesselbarth@...il.com
Subject: Re: [PATCH net-next 1/6] phy: add 2.5G SGMII mode to the phy_mode
 enum



On 12/28/2017 02:06 AM, Antoine Tenart wrote:
> Hi Andrew,
> 
> On Thu, Dec 28, 2017 at 08:20:53AM +0100, Andrew Lunn wrote:
>> On Wed, Dec 27, 2017 at 11:14:41PM +0100, Antoine Tenart wrote:
>>> This patch adds one more generic PHY mode to the phy_mode enum, to allow
>>> configuring generic PHYs to the 2.5G SGMII mode by using the set_mode
>>> callback.
>>>
>>> Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
>>> ---
>>>  include/linux/phy/phy.h | 1 +
>>>  1 file changed, 1 insertion(+)
>>>
>>> diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
>>> index 4f8423a948d5..70459a28f3a1 100644
>>> --- a/include/linux/phy/phy.h
>>> +++ b/include/linux/phy/phy.h
>>> @@ -28,6 +28,7 @@ enum phy_mode {
>>>  	PHY_MODE_USB_DEVICE,
>>>  	PHY_MODE_USB_OTG,
>>>  	PHY_MODE_SGMII,
>>> +	PHY_MODE_SGMII_2_5G,
>>>  	PHY_MODE_10GKR,
>>>  	PHY_MODE_UFS_HS_A,
>>>  	PHY_MODE_UFS_HS_B,
>>
>> There was a discussion maybe last month about adding 2.5G SGMII. I
>> would prefer 2500SGMII. Putting the number first makes it uniform with
>> the other defines, 1000BASEX, 25000BASEX, 10GKR.
> 
> Good to know. I wasn't completely sure how to name this mode properly,
> but I'm fine with PHY_MODE_2500SGMII. I'll update the patches and send a
> v2 (without the dt part).

And since you are respinning, please make sure you update phy_modes() in
the same header file as well as
Documentation/devicetree/bindings/net/ethernet.txt with the newly added
PHY interface mode.
-- 
Florian