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authorTim Harvey <tharvey@gateworks.com>2014-03-07 20:59:53 -0800
committerDavid S. Miller <davem@davemloft.net>2014-03-10 15:40:30 -0400
commit3ee2f8ce1ab8f235bda164295fa0cf39ec1c2400 (patch)
treeabc4e191182dc8dc534a715d37f84dc1a3f11d1f /drivers/net/ethernet/marvell/sky2.c
parent746e349980cb4dd73046434b25432257eefbbb72 (diff)
sky2: allow mac to come from dt
The driver reads the mac address from the device registers which would need to have been programmed by the bootloader. This patch adds the ability to pull the mac from devicetree via the pci device dt node. Signed-off-by: Tim Harvey <tharvey@gateworks.com> Cc: netdev@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Changes since v2: - eliminated use of stack tmpaddr per feedback Changes since v1: - simplified based on feedback - fixed formatting Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/sky2.c')
-rw-r--r--drivers/net/ethernet/marvell/sky2.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 55a37ae11440..2434611d1b4e 100644
--- 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_netdev(struct sky2_hw *hw, unsigned port,
{
struct sky2_port *sky2;
struct net_device *dev = alloc_etherdev(sizeof(*sky2));
+ const void *iap;
if (!dev)
return NULL;
@@ -4805,8 +4808,16 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
dev->features |= dev->hw_features;
- /* read the mac address */
- memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
+ /* try to get mac address in the following order:
+ * 1) from device tree data
+ * 2) from internal registers set by bootloader
+ */
+ iap = of_get_mac_address(hw->pdev->dev.of_node);
+ if (iap)
+ memcpy(dev->dev_addr, iap, ETH_ALEN);
+ else
+ memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
+ ETH_ALEN);
return dev;
}