linux-kernel - Re: [net-next RFC PATCH v2 3/3] net: phy: Add Airoha AN8855 Internal Switch Gigabit PHY

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Message-ID: <671b7a2e.050a0220.4431c.03f5@mx.google.com>
Date: Fri, 25 Oct 2024 12:59:54 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [net-next RFC PATCH v2 3/3] net: phy: Add Airoha AN8855 Internal
 Switch Gigabit PHY

On Wed, Oct 23, 2024 at 06:53:14PM +0200, Andrew Lunn wrote:
> > +	/* Enable Asymmetric Pause Capability */
> > +	ret = phy_set_bits(phydev, MII_ADVERTISE, ADVERTISE_PAUSE_ASYM);
> > +	if (ret)
> > +		return ret;
> 
> The PHY driver alone does not decide this. The MAC driver needs to
> indicate it supports asym pause by calling phy_supports_asym_pause().
>

Sorry for the stupid question, I couldn't find this OPs. Any hit how to
handle this?

> > +
> > +	/* Disable EEE */
> > +	ret = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
> > +	if (ret)
> > +		return ret;
> 
> Again, the core code should handle this, unless EEE is broken and you
> need to force it off.
>

They confirmed this was done just to handle kernel init condition...
Will drop.

-- 
	Ansuel