On 12/05/2013 04:52 PM, Florian Fainelli wrote:
> From: Florian Fainelli <f.fainelli@xxxxxxxxx>
>
> 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: Florian Fainelli <f.fainelli@xxxxxxxxx>
> ---
> drivers/of/of_mdio.c | 25 ++++++++++++++++++++++++-
> 1 file changed, 24 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
> index 4923ab2..e1e19e5 100644
> --- a/drivers/of/of_mdio.c
> +++ b/drivers/of/of_mdio.c
> @@ -22,12 +22,30 @@
> MODULE_AUTHOR("Grant Likely <grant.likely@xxxxxxxxxxxx>");
> 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;
This assumes the speed is not already set. Do you need to first mask
speeds out?
No need to support 10G PHYs?
A fall-thru note would be helpful here.
> + 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");
> @@ -58,8 +76,13 @@ 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);
> + child->name, addr);
>
> return 0;
> }
>
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