From: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com

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 Signed-off-by: Michal Simek michal.simek@xilinx.com ---

drivers/net/xilinx_axi_emac.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)

diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c index 46b8d2d07ee9..4c72702cbd48 100644 --- a/drivers/net/xilinx_axi_emac.c +++ b/drivers/net/xilinx_axi_emac.c @@ -269,6 +269,23 @@ static int setup_phy(struct udevice *dev) struct axi_regs *regs = priv->iobase; 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)) { printf("axiemac: could not initialize PHY %s\n", phydev->dev->name);