This patch series is to add dual fec support for mx28, which is
a mxs-based soc. Some code changes related to the following commits
are also made in this patch set for some reasons.

 e6b043d512fa8d9a3801bf5d72bfa3b8fc3b3cc8
 netdev/fec.c: add phylib supporting to enable carrier detection (v2)

 e3fe8558c7fc182972c3d947d88744482111f304
 net/fec: fix pm to survive to suspend/resume

It's been tested on mx28 evk and mx51 babbage. For mx28, it has
to work against the tree

 git://git.pengutronix.de/git/imx/linux-2.6.git imx-for-2.6.38

plus patch

 [PATCH v4] ARM: mxs: Change duart device to use amba-pl011

The 5 patches below preceding with * have changes since v1, and
the detailed change log can be found in individual patch.

 [PATCH v2 01/10] net/fec: fix MMFR_OP type in fec_enet_mdio_write
 [PATCH v2 02/10] net/fec: remove the use of "index" which is legacy
 [PATCH v2 03/10] net/fec: add mac field into platform data and consolidate fec_get_mac
 [PATCH v2 04/10] net/fec: improve pm for better suspend/resume
*[PATCH v2 05/10] net/fec: add dual fec support for mx28
*[PATCH v2 06/10] ARM: mx28: update clocks for dual fec support
 [PATCH v2 07/10] ARM: mx28: add the second fec device registration
*[PATCH v2 08/10] ARM: mxs: add ocotp read function
*[PATCH v2 09/10] ARM: mx28: read fec mac address from ocotp
*[PATCH v2 10/10] ARM: mxs: add initial pm support

Thanks for review.

Regards,
Shawn

--

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The following commit made a fix to use fec_enet_open/fec_enet_close
over fec_enet_init/fec_stop for suspend/resume, because fec_enet_init
does not allow to have a working network interface at resume.

  e3fe8558c7fc182972c3d947d88744482111f304
  net/fec: fix pm to survive to suspend/resume

This fix works for i.mx/mxc fec controller, but fails on mx28 fec
which gets a different interrupt logic design. On i.mx fec, interrupt
can be triggered even bit ETHER_EN of ECR register is not set. But
on mx28 fec, ETHER_EN must be set to get interrupt work. Meanwhile,
MII interrupt is mandatory to resume the driver, because MDIO
read/write changed to interrupt mode by commit below.

  97b72e4320a9aaa4a7f1592ee7d2da7e2c9bd349
  fec: use interrupt for MDIO completion indication

fec_restart/fec_stop comes out as the solution working for both
cases.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
 drivers/net/fec.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index cd59814..f147508 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -1387,8 +1387,10 @@ fec_suspend(struct device *dev)
 
 	if (ndev) {
 		fep = netdev_priv(ndev);
-		if (netif_running(ndev))
-			fec_enet_close(ndev);
+		if (netif_running(ndev)) {
+			fec_stop(ndev);
+			netif_device_detach(ndev);
+		}
 		clk_disable(fep->clk);
 	}
 	return 0;
@@ -1403,8 +1405,10 @@ fec_resume(struct device *dev)
 	if (ndev) {
 		fep = netdev_priv(ndev);
 		clk_enable(fep->clk);
-		if (netif_running(ndev))
-			fec_enet_open(ndev);
+		if (netif_running(ndev)) {
+			fec_restart(ndev, fep->full_duplex);
+			netif_device_attach(ndev);
+		}
 	}
 	return 0;
 }
-- 
1.7.1


--

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Add mac field into fec_platform_data and consolidate function
fec_get_mac to get mac address in following order.

 1) kernel command line fec_mac=xx:xx:xx...
 2) from flash in case of CONFIG_M5272 or fec_platform_data mac
    field for others, which typically have mac stored in fuse
 3) fec mac address registers set by bootloader

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
---
 drivers/net/fec.c   |   90 ++++++++++++++++++++++++++++----------------------
 include/linux/fec.h |    2 +
 2 files changed, 52 insertions(+), 40 deletions(-)

diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index 47f6b3b..cd59814 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -59,15 +59,9 @@
 #define FEC_ALIGNMENT	0x3
 #endif
 
-/*
- * Define the fixed address of the FEC hardware.
- */
-#if defined(CONFIG_M5272)
-
-static unsigned char	fec_mac_default[] = {
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-};
+static unsigned char fec_mac_default[ETH_ALEN];
 
+#if defined(CONFIG_M5272)
 /*
  * Some hardware gets it MAC address out of local flash memory.
  * if this is non-zero then assume it is the address to get MAC from.
@@ -537,27 +531,40 @@ rx_processing_done:
 }
 
 /* ------------------------------------------------------------------------- */
-#ifdef CONFIG_M5272
 static void __inline__ fec_get_mac(struct net_device *dev)
 {
 	struct fec_enet_private *fep = netdev_priv(dev);
+	struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
 	unsigned char *iap, tmpaddr[ETH_ALEN];
 
-	if (FEC_FLASHMAC) {
-		/*
-		 * Get MAC address from FLASH.
-		 * If it is all 1's or 0's, use the default.
-		 */
-		iap = (unsigned char *)FEC_FLASHMAC;
-		if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
-		    (iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
-			iap = fec_mac_default;
-		if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
-		    (iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
-			iap = fec_mac_default;
-	} else {
-		*((unsigned ...
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