diff --git a/Documentation/devicetree/bindings/net/keystone-netcp.txt b/Documentation/devicetree/bindings/net/keystone-netcp.txt index d0e6fa38f335..b30ab6b5cbfa 100644 --- a/Documentation/devicetree/bindings/net/keystone-netcp.txt +++ b/Documentation/devicetree/bindings/net/keystone-netcp.txt @@ -130,7 +130,11 @@ Required properties: Optional properties: - efuse-mac: If this is 1, then the MAC address for the interface is - obtained from the device efuse mac address register + obtained from the device efuse mac address register. + If this is 2, the two DWORDs occupied by the MAC address + are swapped. The netcp driver will swap the two DWORDs + back to the proper order when this property is set to 2 + when it obtains the mac address from efuse. - local-mac-address: the driver is designed to use the of_get_mac_address api only if efuse-mac is 0. When efuse-mac is 0, the MAC address is obtained from local-mac-address. If this diff --git a/drivers/net/ethernet/ti/netcp_core.c b/drivers/net/ethernet/ti/netcp_core.c index 3ca87f26582a..6f2e151fbc73 100644 --- a/drivers/net/ethernet/ti/netcp_core.c +++ b/drivers/net/ethernet/ti/netcp_core.c @@ -51,6 +51,8 @@ NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \ NETIF_MSG_RX_STATUS) +#define NETCP_EFUSE_ADDR_SWAP 2 + #define knav_queue_get_id(q) knav_queue_device_control(q, \ KNAV_QUEUE_GET_ID, (unsigned long)NULL) @@ -172,13 +174,22 @@ static void set_words(u32 *words, int num_words, u32 *desc) } /* Read the e-fuse value as 32 bit values to be endian independent */ -static int emac_arch_get_mac_addr(char *x, void __iomem *efuse_mac) +static int emac_arch_get_mac_addr(char *x, void __iomem *efuse_mac, u32 swap) { unsigned int addr0, addr1; addr1 = readl(efuse_mac + 4); addr0 = readl(efuse_mac); + switch (swap) { + case NETCP_EFUSE_ADDR_SWAP: + addr0 = addr1; + addr1 = readl(efuse_mac); + break; + default: + break; + } + x[0] = (addr1 & 0x0000ff00) >> 8; x[1] = addr1 & 0x000000ff; x[2] = (addr0 & 0xff000000) >> 24; @@ -1902,7 +1913,7 @@ static int netcp_create_interface(struct netcp_device *netcp_device, goto quit; } - emac_arch_get_mac_addr(efuse_mac_addr, efuse); + emac_arch_get_mac_addr(efuse_mac_addr, efuse, efuse_mac); if (is_valid_ether_addr(efuse_mac_addr)) ether_addr_copy(ndev->dev_addr, efuse_mac_addr); else