[PATCH 01/10] net/macb: Add support for Gigabit Ethernet mode

From: Nicolas Ferre
Date: Wed Sep 05 2012 - 04:19:23 EST


From: Patrice Vilchez <patrice.vilchez@xxxxxxxxx>

Add Gigabit Ethernet mode to GEM cadence IP and enable RGMII connection.

Signed-off-by: Patrice Vilchez <patrice.vilchez@xxxxxxxxx>
Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
---
drivers/net/ethernet/cadence/macb.c | 15 ++++++++++++---
drivers/net/ethernet/cadence/macb.h | 4 ++++
2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 033064b..9a10f69 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -152,13 +152,17 @@ static void macb_handle_link_change(struct net_device *dev)

reg = macb_readl(bp, NCFGR);
reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
+ if (macb_is_gem(bp))
+ reg &= ~GEM_BIT(GBE);

if (phydev->duplex)
reg |= MACB_BIT(FD);
if (phydev->speed == SPEED_100)
reg |= MACB_BIT(SPD);
+ if (phydev->speed == SPEED_1000)
+ reg |= GEM_BIT(GBE);

- macb_writel(bp, NCFGR, reg);
+ macb_or_gem_writel(bp, NCFGR, reg);

bp->speed = phydev->speed;
bp->duplex = phydev->duplex;
@@ -216,7 +220,10 @@ static int macb_mii_probe(struct net_device *dev)
}

/* mask with MAC supported features */
- phydev->supported &= PHY_BASIC_FEATURES;
+ if (macb_is_gem(bp))
+ phydev->supported &= PHY_GBIT_FEATURES;
+ else
+ phydev->supported &= PHY_BASIC_FEATURES;

phydev->advertising = phydev->supported;

@@ -1384,7 +1391,9 @@ static int __init macb_probe(struct platform_device *pdev)
bp->phy_interface = err;
}

- if (bp->phy_interface == PHY_INTERFACE_MODE_RMII)
+ if (bp->phy_interface == PHY_INTERFACE_MODE_RGMII)
+ macb_or_gem_writel(bp, USRIO, GEM_BIT(RGMII));
+ else if (bp->phy_interface == PHY_INTERFACE_MODE_RMII)
#if defined(CONFIG_ARCH_AT91)
macb_or_gem_writel(bp, USRIO, (MACB_BIT(RMII) |
MACB_BIT(CLKEN)));
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 335e288..f69ceef 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -145,6 +145,8 @@
#define MACB_IRXFCS_SIZE 1

/* GEM specific NCFGR bitfields. */
+#define GEM_GBE_OFFSET 10
+#define GEM_GBE_SIZE 1
#define GEM_CLK_OFFSET 18
#define GEM_CLK_SIZE 3
#define GEM_DBW_OFFSET 21
@@ -246,6 +248,8 @@
/* Bitfields in USRIO (AT91) */
#define MACB_RMII_OFFSET 0
#define MACB_RMII_SIZE 1
+#define GEM_RGMII_OFFSET 0 /* GEM gigabit mode */
+#define GEM_RGMII_SIZE 1
#define MACB_CLKEN_OFFSET 1
#define MACB_CLKEN_SIZE 1

--
1.7.10

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