This patch changes GMAC control register (TC(Transmit
Configuration) and PS(Port Selection) bit for SGMII.
In case of SGMII, TC bit is '1' and PS bit is 0.
Signed-off-by: Byungho An <bh74...@samsung.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c6cdbc4..a719c87 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1037,6 +1037,7 @@ static int stmmac_open(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
int ret;
+ u32 value;
#ifdef CONFIG_STMMAC_TIMER
priv->tm = kzalloc(sizeof(struct stmmac_timer *), GFP_KERNEL);
@@ -1088,6 +1089,15 @@ static int stmmac_open(struct net_device *dev)
/* Initialize the MAC Core */
priv->hw->mac->core_init(priv->ioaddr);
+ if (priv->phydev->interface == PHY_INTERFACE_MODE_SGMII) {
+ value = readl(priv->ioaddr);
+ /* GMAC_CONTROL_TC : transmit config in RGMII/SGMII */
+ value |= 0x1000000;
+ /* GMAC_CONTROL_PS : Port Selection for GMII */
+ value &= ~(0x8000);
+ writel(value, priv->ioaddr);
+ }
+
/* Request the IRQ lines */
ret = request_irq(dev->irq, stmmac_interrupt,
IRQF_SHARED, dev->name, dev);
--
1.7.9.5
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