[U-Boot] [PATCH 4/4] i.mx6q: mx6qsabrelite: Update the network configuration

[Troy Kisky]

Enable the usage of PHY_MICREL_KSZ9021, and
minimize the tx clock delay.

There is an issue with 1000 baseTx mode on early revs
of the SabreLite boards. The center tap pin 9 of the mag RJ45
USB combo was connected to the 3.3 filtered supply. Letting
this pin float solved the problem. Symptoms of the problem
were packets with many extra zeroes tacked on the end, and random
bit flips causing a high rate of CRC errors. 10/100 baseTx worked
fine on all revs. To disable 1000 baseTx for these boards, simply
define the environment variable disable_giga. ie.

setenv disable_giga 1

Signed-off-by: Troy Kisky <troy.kisky at boundarydevices.com>
---
 board/freescale/mx6qsabrelite/mx6qsabrelite.c |   43 +-----------------------
 include/configs/mx6qsabrelite.h               |    7 ++++
 2 files changed, 9 insertions(+), 41 deletions(-)

diff --git a/board/freescale/mx6qsabrelite/mx6qsabrelite.c b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
index e6c12a5..77fb79c 100644
--- a/board/freescale/mx6qsabrelite/mx6qsabrelite.c
+++ b/board/freescale/mx6qsabrelite/mx6qsabrelite.c
@@ -187,53 +187,14 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
-#define MII_1000BASET_CTRL		0x9
-#define MII_EXTENDED_CTRL		0xb
-#define MII_EXTENDED_DATAW		0xc
-
-int fecmxc_mii_postcall(int phy)
-{
-	/* prefer master mode */
-	miiphy_write("FEC", phy, MII_1000BASET_CTRL, 0x0f00);
-
-	/* min rx data delay */
-	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x8105);
-	miiphy_write("FEC", phy, MII_EXTENDED_DATAW, 0x0000);
-
-	/* max rx/tx clock delay, min rx/tx control delay */
-	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x8104);
-	miiphy_write("FEC", phy, MII_EXTENDED_DATAW, 0xf0f0);
-	miiphy_write("FEC", phy, MII_EXTENDED_CTRL, 0x104);
-
-	return 0;
-}
-
 int board_eth_init(bd_t *bis)
 {
-	struct eth_device *dev;
 	int ret;
-
 	setup_iomux_enet();
-
 	ret = cpu_eth_init(bis);
-	if (ret) {
+	if (ret)
 		printf("FEC MXC: %s:failed\n", __func__);
-		return ret;
-	}
-
-	dev = eth_get_dev_by_name("FEC");
-	if (!dev) {
-		printf("FEC MXC: Unable to get FEC device entry\n");
-		return -EINVAL;
-	}
-
-	ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
-	if (ret) {
-		printf("FEC MXC: Unable to register FEC mii postcall\n");
-		return ret;
-	}
-
-	return 0;
+	return ret;
 }
 
 int board_early_init_f(void)
diff --git a/include/configs/mx6qsabrelite.h b/include/configs/mx6qsabrelite.h
index 86b25d9..cbae4c3 100644
--- a/include/configs/mx6qsabrelite.h
+++ b/include/configs/mx6qsabrelite.h
@@ -66,6 +66,13 @@
 #define	CONFIG_FEC_XCV_TYPE		RGMII
 #define CONFIG_ETHPRIME			"FEC"
 #define CONFIG_FEC_MXC_PHYADDR		6
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL_KSZ9021
+#define CONFIG_PHY_MICREL_KSZ9021_INIT_CMDS	\
+	0x8105, 0x0000,		/* min rx data delay */	\
+	0x8106, 0x0000,		/* min tx data delay */	\
+	0x8104, 0xf0f0,		/* max rx/tx clock delay, min rx/tx control */
+
 
 /* allow to overwrite serial and ethaddr */
 #define CONFIG_ENV_OVERWRITE
-- 
1.7.5.4