From c7f6dbe736f3f57436ba162f986691f7e862eb4d Mon Sep 17 00:00:00 2001 From: Vipin KUMAR Date: Mon, 26 Mar 2012 00:09:52 +0000 Subject: net/designware: Fix to restore hw mac address The network controller mac resets hardware address stored in MAC_HI and MAC_LO registers if mac is resetted. So, hw mac address needs to be restored in case mac is explicitly resetted from driver. Signed-off-by: Vipin Kumar Signed-off-by: Amit Virdi --- drivers/net/designware.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 1e34436772..ea8a40612e 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -148,6 +148,9 @@ static int dw_eth_init(struct eth_device *dev, bd_t *bis) if (mac_reset(dev) < 0) return -1; + /* Resore the HW MAC address as it has been lost during MAC reset */ + dw_write_hwaddr(dev); + writel(FIXEDBURST | PRIORXTX_41 | BURST_16, &dma_p->busmode); @@ -300,8 +303,10 @@ static int eth_mdio_write(struct eth_device *dev, u8 addr, u8 reg, u16 val) writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr); do { - if (!(readl(&mac_p->miiaddr) & MII_BUSY)) + if (!(readl(&mac_p->miiaddr) & MII_BUSY)) { ret = 0; + break; + } udelay(1000); } while (timeout--); -- cgit