Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8fdade4b authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
Browse files

net: of_mdio: parse "max-speed" property to set PHY supported features 



The "max-speed" property is defined per the ePAPR specification to
express the maximum speed a PHY supports. Use that property, if present
to set the phydev->supported features which properly restricts the PHY
within the range of defined speeds.

Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e9fbdf17

drivers/of/of_mdio.c

+24 −1
Original line number Diff line number Diff line
@@ -22,12 +22,30 @@ 
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");

MODULE_LICENSE("GPL");



static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed)

{

	phydev->supported |= PHY_DEFAULT_FEATURES;



	switch (max_speed) {

	default:

		return;



	case SPEED_1000:

		phydev->supported |= PHY_1000BT_FEATURES;

	case SPEED_100:

		phydev->supported |= PHY_100BT_FEATURES;

	case SPEED_10:

		phydev->supported |= PHY_10BT_FEATURES;

	}

}



static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *child,

				   u32 addr)

{

	struct phy_device *phy;

	bool is_c45;

	int rc, prev_irq;

	u32 max_speed = 0;



	is_c45 = of_device_is_compatible(child,

					 "ethernet-phy-ieee802.3-c45");
@@ -58,6 +76,11 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi 
		return 1;

	}



	/* Set phydev->supported based on the "max-speed" property

	 * if present */

	if (!of_property_read_u32(child, "max-speed", &max_speed))

		of_set_phy_supported(phy, max_speed);



	dev_dbg(&mdio->dev, "registered phy %s at address %i\n",

		child->name, addr);