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net: xilinx_axi: Clear Isolate bit if found during phy setup

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In SGMII cases the isolate bit might set after DMA and
ethernet resets and hence check and clear during
setup_phy if it was set.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2016-02-21 15:46:15 +05:30 committed by Michal Simek
parent 9c0da76220
commit 8964f24179
1 changed files with 19 additions and 1 deletions
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20
drivers/net/xilinx_axi_emac.c
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@ -264,11 +264,29 @@ static int axiemac_phy_init(struct udevice *dev)
/* Setting axi emac and phy to proper setting */ /* Setting axi emac and phy to proper setting */
static int setup_phy(struct udevice *dev) static int setup_phy(struct udevice *dev)
{ {
u32 speed, emmc_reg; u16 temp;
u32 speed, emmc_reg, ret;
struct axidma_priv *priv = dev_get_priv(dev); struct axidma_priv *priv = dev_get_priv(dev);
struct axi_regs *regs = priv->iobase; struct axi_regs *regs = priv->iobase;
struct phy_device *phydev = priv->phydev; struct phy_device *phydev = priv->phydev;
if (priv->interface == PHY_INTERFACE_MODE_SGMII) {
/*
* In SGMII cases the isolate bit might set
* after DMA and ethernet resets and hence
* check and clear if set.
*/
ret = phyread(priv, priv->phyaddr, MII_BMCR, &temp);
if (ret)
return 0;
if (temp & BMCR_ISOLATE) {
temp &= ~BMCR_ISOLATE;
ret = phywrite(priv, priv->phyaddr, MII_BMCR, temp);
if (ret)
return 0;
}
}
if (phy_startup(phydev)) { if (phy_startup(phydev)) {
printf("axiemac: could not initialize PHY %s\n", printf("axiemac: could not initialize PHY %s\n",
phydev->dev->name); phydev->dev->name);