[PATCH net-next 5/8] net: bcmgenet: communicate integrated PHY revision to PHY driver
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2014-09-16 23:53:58
Subsystem:
broadcom genet ethernet driver, networking drivers, the rest · Maintainers:
Doug Berger, Florian Fainelli, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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> --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 7 +++++++ drivers/net/ethernet/broadcom/genet/bcmgenet.h | 1 + drivers/net/ethernet/broadcom/genet/bcmmii.c | 8 ++++++-- 3 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 3f9d4de8173c..a12c65604f9d 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c@@ -2432,6 +2432,13 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv) 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 c862d0666771..ad95fe57ebcd 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h@@ -545,6 +545,7 @@ struct bcmgenet_priv { 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 71f2ef7d33a9..75b26cbaa7c1 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c@@ -296,6 +296,7 @@ static int bcmgenet_mii_probe(struct net_device *dev) 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 @@ static int bcmgenet_mii_probe(struct net_device *dev) 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;
--
1.9.1