[U-Boot] [PATCH V4 3/8] imx: fec: Resolve speed before configuring gasket

[Timo Ketola]

Gasket needs a different configuration for 10BaseT than for higher
speeds.

Signed-off-by: Timo Ketola <timo at exertus.fi>
---

Changes in v4:
- Rewrapped commit message

Changes in v2:
- Dropped patches 2 and 3 so this one changed from 5 to 3
- Rebased to u-boot-imx next
- Removed the remove of 'miiphy_duplex' call
- Changed 'speed == _100BASET' to 'speed != _10BASET' to not to break
    _1000BASET
- Changed configuration option to put gasket into RMII mode from
    !CONFIG_MII to CONFIG_RMII. I'm not too sure how this should be
    done though. !CONFIG_MII is normally used for this but its original
    purpose was to enable MII *management* interface, I think...

 drivers/net/fec_mxc.c |   43 ++++++++++++++++++++++++-------------------
 1 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 824a199..48a69d4 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -440,6 +440,22 @@ static int fec_open(struct eth_device *edev)
 	 */
 	writel(readl(&fec->eth->ecntrl) | FEC_ECNTRL_ETHER_EN,
 		&fec->eth->ecntrl);
+#ifdef CONFIG_PHYLIB
+	if (!fec->phydev)
+		fec_eth_phy_config(edev);
+	if (fec->phydev) {
+		/* Start up the PHY */
+		phy_startup(fec->phydev);
+		speed = fec->phydev->speed;
+	} else {
+		speed = _100BASET;
+	}
+#else
+	miiphy_wait_aneg(edev);
+	speed = miiphy_speed(edev->name, fec->phy_id);
+	miiphy_duplex(edev->name, fec->phy_id);
+#endif
+
 #if defined(CONFIG_MX25) || defined(CONFIG_MX53)
 	udelay(100);
 	/*
@@ -453,9 +469,14 @@ static int fec_open(struct eth_device *edev)
 	while (readw(&fec->eth->miigsk_enr) & MIIGSK_ENR_READY)
 		udelay(2);
 
-#if !defined(CONFIG_MII)
-	/* configure gasket for RMII, 50 MHz, no loopback, and no echo */
-	writew(MIIGSK_CFGR_IF_MODE_RMII, &fec->eth->miigsk_cfgr);
+#if defined(CONFIG_RMII)
+	if (speed != _10BASET)
+		/* configure gasket for RMII, 50MHz, no loopback, and no echo */
+		writew(MIIGSK_CFGR_IF_MODE_RMII, &fec->eth->miigsk_cfgr);
+	else
+		/* configure gasket for RMII, 5MHz, no loopback, and no echo */
+		writew(MIIGSK_CFGR_IF_MODE_RMII | MIIGSK_CFGR_FRCONT,
+				&fec->eth->miigsk_cfgr);
 #else
 	/* configure gasket for MII, no loopback, and no echo */
 	writew(MIIGSK_CFGR_IF_MODE_MII, &fec->eth->miigsk_cfgr);
@@ -474,22 +495,6 @@ static int fec_open(struct eth_device *edev)
 	}
 #endif
 
-#ifdef CONFIG_PHYLIB
-	if (!fec->phydev)
-		fec_eth_phy_config(edev);
-	if (fec->phydev) {
-		/* Start up the PHY */
-		phy_startup(fec->phydev);
-		speed = fec->phydev->speed;
-	} else {
-		speed = _100BASET;
-	}
-#else
-	miiphy_wait_aneg(edev);
-	speed = miiphy_speed(edev->name, fec->phy_id);
-	miiphy_duplex(edev->name, fec->phy_id);
-#endif
-
 #ifdef FEC_QUIRK_ENET_MAC
 	{
 		u32 ecr = readl(&fec->eth->ecntrl) & ~FEC_ECNTRL_SPEED;
-- 
1.7.5.4