- microchip,led-modes: a 0..4 element vector, with each element configuring
the operating mode of an LED. Omitted LEDs are turned off. Allowed values
are defined in "include/dt-bindings/net/microchip-lan78xx.h".
+- microchip,downshift-after: sets the number of failed auto-negotiation
+ attempts after which the link is downgraded from 1000BASE-T. Should be one of
+ 2, 3, 4, 5 or 0, where 0 means never downshift.
Example:
struct device *dev = &phydev->mdio.dev;
struct lan88xx_priv *priv;
u32 led_modes[4];
+ u32 downshift_after = 0;
int len;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
return -EINVAL;
}
+ if (!of_property_read_u32(dev->of_node,
+ "microchip,downshift-after",
+ &downshift_after)) {
+ u32 mask = LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK;
+ u32 val= LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
+
+ switch (downshift_after) {
+ case 2: val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2;
+ break;
+ case 3: val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3;
+ break;
+ case 4: val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4;
+ break;
+ case 5: val |= LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5;
+ break;
+ case 0: // Disable completely
+ mask = LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT;
+ val = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ (void)phy_modify_paged(phydev, 1, LAN78XX_PHY_CTRL3,
+ mask, val);
+ }
+
/* these values can be used to identify internal PHY */
priv->chip_id = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_ID);
priv->chip_rev = phy_read_mmd(phydev, 3, LAN88XX_MMD3_CHIP_REV);
/* Registers specific to the LAN7800/LAN7850 embedded phy */
#define LAN78XX_PHY_LED_MODE_SELECT (0x1D)
+#define LAN78XX_PHY_CTRL3 (0x14)
+#define LAN78XX_PHY_CTRL3_AUTO_DOWNSHIFT (0x0010)
+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_MASK (0x000c)
+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_2 (0x0000)
+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_3 (0x0004)
+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_4 (0x0008)
+#define LAN78XX_PHY_CTRL3_DOWNSHIFT_CTRL_5 (0x000c)
+
/* DSP registers */
#define PHY_ARDENNES_MMD_DEV_3_PHY_CFG (0x806A)
#define PHY_ARDENNES_MMD_DEV_3_PHY_CFG_ZD_DLY_EN_ (0x2000)