linux-kernel - Re: [PATCH net-next 02/13] net: dsa: lantiq_gswip: Only allow phy-mode = "internal" on the CPU port

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Date: Fri, 07 Jun 2024 14:01:57 +0200
From: Martin Schiller <ms@....tdt.de>
To: Vladimir Oltean <olteanv@...il.com>
Cc: martin.blumenstingl@...glemail.com, hauke@...ke-m.de, andrew@...n.ch,
 f.fainelli@...il.com, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, netdev@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 02/13] net: dsa: lantiq_gswip: Only allow
 phy-mode = "internal" on the CPU port

On 2024-06-07 13:03, Vladimir Oltean wrote:
> On Thu, Jun 06, 2024 at 10:52:23AM +0200, Martin Schiller wrote:
>> From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
>> 
>> Add the CPU port to gswip_xrx200_phylink_get_caps() and
>> gswip_xrx300_phylink_get_caps(). It connects through a SoC-internal 
>> bus,
>> so the only allowed phy-mode is PHY_INTERFACE_MODE_INTERNAL.
>> 
>> Signed-off-by: Martin Blumenstingl 
>> <martin.blumenstingl@...glemail.com>
>> ---
> 
> This is for the case where those CPU port device tree properties are
> present, right? In the device trees in current circulation they are 
> not,
> and DSA skips phylink registration.

Yes, as far as I know, this driver is mainly, if not exclusively, used 
in the
openWrt environment. These functions were already added here in Oct. 
2022 [1].

[1] 
https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=2683cca5927844594f7835aa983e2690d1e343c6