net: bcmgenet: communicate integrated PHY revision to PHY driver
The integrated BCM7xxx PHY contains no useful revision information in
its MII_PHYSID2 bits 3:0, that information is instead contained in the
GENET hardware block.
We already read the GENET 32-bit revision register, so store the
integrated PHY revision in the driver private structure, and then
communicate this revision value to the PHY driver by overriding the
phy_flags value.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 3f9d4de..a12c656 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -2432,6 +2432,13 @@
dev_info(&priv->pdev->dev, "GENET " GENET_VER_FMT,
major, (reg >> 16) & 0x0f, reg & 0xffff);
+ /* Store the integrated PHY revision for the MDIO probing function
+ * to pass this information to the PHY driver. The PHY driver expects
+ * to find the PHY major revision in bits 15:8 while the GENET register
+ * stores that information in bits 7:0, account for that.
+ */
+ priv->gphy_rev = (reg & 0xffff) << 8;
+
#ifdef CONFIG_PHYS_ADDR_T_64BIT
if (!(params->flags & GENET_HAS_40BITS))
pr_warn("GENET does not support 40-bits PA\n");
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
index c862d06..ad95fe5 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -545,6 +545,7 @@
struct phy_device *phydev;
struct device_node *phy_dn;
struct mii_bus *mii_bus;
+ u16 gphy_rev;
/* PHY device variables */
int old_duplex;
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 71f2ef7..75b26cba 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -296,6 +296,7 @@
struct bcmgenet_priv *priv = netdev_priv(dev);
struct device_node *dn = priv->pdev->dev.of_node;
struct phy_device *phydev;
+ u32 phy_flags;
int ret;
if (priv->phydev) {
@@ -314,8 +315,11 @@
priv->phy_dn = of_node_get(dn);
}
- phydev = of_phy_connect(dev, priv->phy_dn, bcmgenet_mii_setup, 0,
- priv->phy_interface);
+ /* Communicate the integrated PHY revision */
+ phy_flags = priv->gphy_rev;
+
+ phydev = of_phy_connect(dev, priv->phy_dn, bcmgenet_mii_setup,
+ phy_flags, priv->phy_interface);
if (!phydev) {
pr_err("could not attach to PHY\n");
return -ENODEV;