linux-kernel - Re: [PATCH net-next] net: phy: dp8382x: keep WOL setting across suspends

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Date: Thu, 7 Mar 2024 00:04:50 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Catalin Popescu <catalin.popescu@...ca-geosystems.com>
Cc: hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	bsp-development.geo@...ca-geosystems.com, m.felsch@...gutronix.de
Subject: Re: [PATCH net-next] net: phy: dp8382x: keep WOL setting across
 suspends

On Wed, Mar 06, 2024 at 06:14:46PM +0100, Catalin Popescu wrote:
> Unlike other ethernet PHYs from TI, PHY dp83822x has WOL enabled
> at reset.

This is rather odd behaviour. Is this stated in the datasheet?

> @@ -572,11 +584,17 @@ static int dp83826_config_init(struct phy_device *phydev)
>  			return ret;
>  	}
>  
> +	if (dp83822->wol_enabled)
> +		return 0;
>  	return dp8382x_disable_wol(phydev);
>  }
>  
>  static int dp8382x_config_init(struct phy_device *phydev)
>  {
> +	struct dp83822_private *dp83822 = phydev->priv;
> +
> +	if (dp83822->wol_enabled)
> +		return 0;
>  	return dp8382x_disable_wol(phydev);

Since it is rather odd behaviour, there might be some BIOSes which
disable WoL. So i would not rely on it being enabled by
default. Explicitly enable it.

    Andrew

---
pw-bot: cr