kernel: fix BCM54612E PHY support

This backports upstream commit 62e13097c46c ("net: phy: broadcom: rehook
BCM54612E specific init")

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

diff --git a/target/linux/generic/patches-4.4/078-0004-net-phy-pick-Broadcom-drivers-updates-from-net-next-.patch b/target/linux/generic/patches-4.4/078-0004-net-phy-pick-Broadcom-drivers-updates-from-net-next-.patch
index 87d6c500694b6954e6997f001839fc36f0e3e28d..d050691841f41932d96264512a702f146dd05873 100644 (file)
--- a/target/linux/generic/patches-4.4/078-0004-net-phy-pick-Broadcom-drivers-updates-from-net-next-.patch
+++ b/target/linux/generic/patches-4.4/078-0004-net-phy-pick-Broadcom-drivers-updates-from-net-next-.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/phy/broadcom.c
 +++ b/drivers/net/phy/broadcom.c
-@@ -30,6 +30,22 @@ MODULE_DESCRIPTION("Broadcom PHY driver"
+@@ -30,6 +30,50 @@ MODULE_DESCRIPTION("Broadcom PHY driver"
  MODULE_AUTHOR("Maciej W. Rozycki");
  MODULE_LICENSE("GPL");
  
@@ -19,11 +19,39 @@
 +
 +      return 0;
 +}
++
++static int bcm54612e_config_init(struct phy_device *phydev)
++{
++      /* Clear TX internal delay unless requested. */
++      if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
++          (phydev->interface != PHY_INTERFACE_MODE_RGMII_TXID)) {
++              /* Disable TXD to GTXCLK clock delay (default set) */
++              /* Bit 9 is the only field in shadow register 00011 */
++              bcm_phy_write_shadow(phydev, 0x03, 0);
++      }
++
++      /* Clear RX internal delay unless requested. */
++      if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
++          (phydev->interface != PHY_INTERFACE_MODE_RGMII_RXID)) {
++              u16 reg;
++
++              reg = bcm54xx_auxctl_read(phydev,
++                                        MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
++              /* Disable RXD to RXC delay (default set) */
++              reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
++              /* Clear shadow selector field */
++              reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MASK;
++              bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
++                                   MII_BCM54XX_AUXCTL_MISC_WREN | reg);
++      }
++
++      return 0;
++}
 +
  static int bcm54810_config(struct phy_device *phydev)
  {
        int rc, val;
-@@ -230,7 +246,11 @@ static int bcm54xx_config_init(struct ph
+@@ -230,7 +274,15 @@ static int bcm54xx_config_init(struct ph
            (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
                bcm54xx_adjust_rxrefclk(phydev);
  
@@ -32,11 +60,57 @@
 +              err = bcm54210e_config_init(phydev);
 +              if (err)
 +                      return err;
++      } else if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54612E) {
++              err = bcm54612e_config_init(phydev);
++              if (err)
++                      return err;
 +      } else if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810) {
                err = bcm54810_config(phydev);
                if (err)
                        return err;
-@@ -548,6 +568,19 @@ static struct phy_driver broadcom_driver
+@@ -375,41 +427,6 @@ static int bcm5481_config_aneg(struct ph
+       return ret;
+ }
+ 
+-static int bcm54612e_config_aneg(struct phy_device *phydev)
+-{
+-      int ret;
+-
+-      /* First, auto-negotiate. */
+-      ret = genphy_config_aneg(phydev);
+-
+-      /* Clear TX internal delay unless requested. */
+-      if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
+-          (phydev->interface != PHY_INTERFACE_MODE_RGMII_TXID)) {
+-              /* Disable TXD to GTXCLK clock delay (default set) */
+-              /* Bit 9 is the only field in shadow register 00011 */
+-              bcm_phy_write_shadow(phydev, 0x03, 0);
+-      }
+-
+-      /* Clear RX internal delay unless requested. */
+-      if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) &&
+-          (phydev->interface != PHY_INTERFACE_MODE_RGMII_RXID)) {
+-              u16 reg;
+-
+-              /* Errata: reads require filling in the write selector field */
+-              bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
+-                                   MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC);
+-              reg = phy_read(phydev, MII_BCM54XX_AUX_CTL);
+-              /* Disable RXD to RXC delay (default set) */
+-              reg &= ~MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW;
+-              /* Clear shadow selector field */
+-              reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MASK;
+-              bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
+-                                   MII_BCM54XX_AUXCTL_MISC_WREN | reg);
+-      }
+-
+-      return ret;
+-}
+-
+ static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
+ {
+       int val;
+@@ -548,6 +565,19 @@ static struct phy_driver broadcom_driver
        .config_intr    = bcm_phy_config_intr,
        .driver         = { .owner = THIS_MODULE },
  }, {
@@ -56,7 +130,16 @@
        .phy_id         = PHY_ID_BCM5461,
        .phy_id_mask    = 0xfffffff0,
        .name           = "Broadcom BCM5461",
-@@ -710,6 +743,7 @@ module_phy_driver(broadcom_drivers);
+@@ -568,7 +598,7 @@ static struct phy_driver broadcom_driver
+                         SUPPORTED_Pause | SUPPORTED_Asym_Pause,
+       .flags          = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT,
+       .config_init    = bcm54xx_config_init,
+-      .config_aneg    = bcm54612e_config_aneg,
++      .config_aneg    = genphy_config_aneg,
+       .read_status    = genphy_read_status,
+       .ack_interrupt  = bcm_phy_ack_intr,
+       .config_intr    = bcm_phy_config_intr,
+@@ -710,6 +740,7 @@ module_phy_driver(broadcom_drivers);
  static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
        { PHY_ID_BCM5411, 0xfffffff0 },
        { PHY_ID_BCM5421, 0xfffffff0 },