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path: root/drivers/net/phy/dp83tg720.c
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Diffstat (limited to 'drivers/net/phy/dp83tg720.c')
-rw-r--r--drivers/net/phy/dp83tg720.c38
1 files changed, 34 insertions, 4 deletions
diff --git a/drivers/net/phy/dp83tg720.c b/drivers/net/phy/dp83tg720.c
index 326c9770a6..c706429b22 100644
--- a/drivers/net/phy/dp83tg720.c
+++ b/drivers/net/phy/dp83tg720.c
@@ -17,6 +17,11 @@
#define DP83TG720S_PHY_RESET 0x1f
#define DP83TG720S_HW_RESET BIT(15)
+#define DP83TG720S_LPS_CFG3 0x18c
+/* Power modes are documented as bit fields but used as values */
+/* Power Mode 0 is Normal mode */
+#define DP83TG720S_LPS_CFG3_PWR_MODE_0 BIT(0)
+
#define DP83TG720S_RGMII_DELAY_CTRL 0x602
/* In RGMII mode, Enable or disable the internal delay for RXD */
#define DP83TG720S_RGMII_RX_CLK_SEL BIT(1)
@@ -31,11 +36,20 @@
static int dp83tg720_config_aneg(struct phy_device *phydev)
{
+ int ret;
+
/* Autoneg is not supported and this PHY supports only one speed.
* We need to care only about master/slave configuration if it was
* changed by user.
*/
- return genphy_c45_pma_baset1_setup_master_slave(phydev);
+ ret = genphy_c45_pma_baset1_setup_master_slave(phydev);
+ if (ret)
+ return ret;
+
+ /* Re-read role configuration to make changes visible even if
+ * the link is in administrative down state.
+ */
+ return genphy_c45_pma_baset1_read_master_slave(phydev);
}
static int dp83tg720_read_status(struct phy_device *phydev)
@@ -64,6 +78,8 @@ static int dp83tg720_read_status(struct phy_device *phydev)
return ret;
/* After HW reset we need to restore master/slave configuration.
+ * genphy_c45_pma_baset1_read_master_slave() call will be done
+ * by the dp83tg720_config_aneg() function.
*/
ret = dp83tg720_config_aneg(phydev);
if (ret)
@@ -154,10 +170,24 @@ static int dp83tg720_config_init(struct phy_device *phydev)
*/
usleep_range(1000, 2000);
- if (phy_interface_is_rgmii(phydev))
- return dp83tg720_config_rgmii_delay(phydev);
+ if (phy_interface_is_rgmii(phydev)) {
+ ret = dp83tg720_config_rgmii_delay(phydev);
+ if (ret)
+ return ret;
+ }
+
+ /* In case the PHY is bootstrapped in managed mode, we need to
+ * wake it.
+ */
+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND2, DP83TG720S_LPS_CFG3,
+ DP83TG720S_LPS_CFG3_PWR_MODE_0);
+ if (ret)
+ return ret;
- return 0;
+ /* Make role configuration visible for ethtool on init and after
+ * rest.
+ */
+ return genphy_c45_pma_baset1_read_master_slave(phydev);
}
static struct phy_driver dp83tg720_driver[] = {