imx6: add initial 3.12 support

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 38574

1 files changed, 57 insertions, 0 deletions

diff --git a/target/linux/imx6/patches-3.12/020-marvell-sky2-macdt.patch b/target/linux/imx6/patches-3.12/020-marvell-sky2-macdt.patch
new file mode 100644
index 0000000000..96486b1518
--- /dev/null
+++ b/target/linux/imx6/patches-3.12/020-marvell-sky2-macdt.patch
@@ -0,0 +1,57 @@
+--- a/drivers/net/ethernet/marvell/sky2.c
++++ b/drivers/net/ethernet/marvell/sky2.c
+@@ -44,6 +44,8 @@
+ #include <linux/prefetch.h>
+ #include <linux/debugfs.h>
+ #include <linux/mii.h>
++#include <linux/of_device.h>
++#include <linux/of_net.h>
+ 
+ #include <asm/irq.h>
+ 
+@@ -4748,6 +4750,7 @@ static struct net_device *sky2_init_netd
+ {
+ 	struct sky2_port *sky2;
+ 	struct net_device *dev = alloc_etherdev(sizeof(*sky2));
++	unsigned char *iap, tmpaddr[ETH_ALEN];
+ 
+ 	if (!dev)
+ 		return NULL;
+@@ -4802,8 +4805,36 @@
+ 
+ 	dev->features |= dev->hw_features;
+ 
++	/*
++	 * Try to get mac address in the following order:
++	 * 1) from device tree data
++	 * 2) from internal registers set by bootloader
++	 */
++	iap = NULL;
++	if (IS_ENABLED(CONFIG_OF)) {
++		struct device_node *np;
++		np = of_find_node_by_path("/aliases");
++		if (np) {
++			const char *path = of_get_property(np, "sky2", NULL);
++			if (path)
++				np = of_find_node_by_path(path);
++			if (np)
++				path = of_get_mac_address(np);
++			if (path)
++				iap = (unsigned char *) path;
++		}
++	}
++
++	/*
++	 * 2) mac registers set by bootloader
++	 */
++	if (!iap || !is_valid_ether_addr(iap)) {
++		memcpy_fromio(&tmpaddr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
++		iap = &tmpaddr[0];
++	}
++
+ 	/* read the mac address */
+-	memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
++	memcpy(dev->dev_addr, iap, ETH_ALEN);
+ 
+ 	return dev;
+ }