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From: Andrew Lunn <andrew@lunn.ch>
To: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
	linux@armlinux.org.uk, kuba@kernel.org, hkallweit1@gmail.com,
	richardcochran@gmail.com, rdunlap@infradead.org,
	Bryan.Whitehead@microchip.com, edumazet@google.com,
	pabeni@redhat.com, linux-kernel@vger.kernel.org,
	horms@kernel.org, UNGLinuxDriver@microchip.com
Subject: Re: [PATCH net-next V4 5/5] net: lan743x: Add support to ethtool phylink get and set settings
Date: Fri, 30 Aug 2024 22:55:10 +0200	[thread overview]
Message-ID: <9f74455e-45ec-495a-bc8e-1c61caab747c@lunn.ch> (raw)
In-Reply-To: <20240829055132.79638-6-Raju.Lakkaraju@microchip.com>

> @@ -3055,6 +3071,10 @@ static void lan743x_phylink_mac_link_up(struct phylink_config *config,
>  					  cap & FLOW_CTRL_TX,
>  					  cap & FLOW_CTRL_RX);
>  
> +	if (phydev)
> +		lan743x_mac_eee_enable(adapter, phydev->enable_tx_lpi &&
> +				       phydev->eee_enabled);

This is wrong. The documentation says:

/**
 * phy_support_eee - Set initial EEE policy configuration
 * @phydev: Target phy_device struct
 *
 * This function configures the initial policy for Energy Efficient Ethernet
 * (EEE) on the specified PHY device, influencing that EEE capabilities are
 * advertised before the link is established. It should be called during PHY
 * registration by the MAC driver and/or the PHY driver (for SmartEEE PHYs)
 * if MAC supports LPI or PHY is capable to compensate missing LPI functionality
 * of the MAC.
 *
 * The function sets default EEE policy parameters, including preparing the PHY
 * to advertise EEE capabilities based on hardware support.
 *
 * It also sets the expected configuration for Low Power Idle (LPI) in the MAC
 * driver. If the PHY framework determines that both local and remote
 * advertisements support EEE, and the negotiated link mode is compatible with
 * EEE, it will set enable_tx_lpi = true. The MAC driver is expected to act on
 * this setting by enabling the LPI timer if enable_tx_lpi is set.
 */

So you should only be looking at enable_tx_lpi.

Also, do you actually call phy_support_eee() anywhere? I don't see it
in this patch, but maybe it was already there?

   	Adrew

  reply	other threads:[~2024-08-30 20:55 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-29  5:51 [PATCH net-next V4 0/5] Add support to PHYLINK for LAN743x/PCI11x1x chips Raju Lakkaraju
2024-08-29  5:51 ` [PATCH net-next V4 1/5] net: phylink: Add phylink_set_fixed_link() to configure fixed link state in phylink Raju Lakkaraju
2024-08-30 20:37   ` Andrew Lunn
2024-08-29  5:51 ` [PATCH net-next V4 2/5] net: lan743x: Create separate PCS power reset function Raju Lakkaraju
2024-08-29  5:51 ` [PATCH net-next V4 3/5] net: lan743x: Create separate Link Speed Duplex state function Raju Lakkaraju
2024-08-29  5:51 ` [PATCH net-next V4 4/5] net: lan743x: Migrate phylib to phylink Raju Lakkaraju
2024-08-29  7:49   ` Maxime Chevallier
2024-08-30  5:36     ` Raju Lakkaraju
2024-08-29  5:51 ` [PATCH net-next V4 5/5] net: lan743x: Add support to ethtool phylink get and set settings Raju Lakkaraju
2024-08-30 20:55   ` Andrew Lunn [this message]
2024-09-04  8:23     ` Raju Lakkaraju

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