diff options
| author | Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> | 2016-02-21 15:46:15 +0530 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2016-04-04 20:10:44 +0200 |
| commit | 8964f241790181b08eae02b2da56fbadb0375930 (patch) | |
| tree | 6ed42b91a3197fa02cfaf5bfec4518618098b680 /drivers/net | |
| parent | 9c0da76220b4010b756c76d6fbbcf66d6b3d8dfd (diff) | |
net: xilinx_axi: Clear Isolate bit if found during phy setup
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>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/xilinx_axi_emac.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/net/xilinx_axi_emac.c b/drivers/net/xilinx_axi_emac.c index 46b8d2d07e..3d69bed309 100644 --- a/drivers/net/xilinx_axi_emac.c +++ b/drivers/net/xilinx_axi_emac.c @@ -264,11 +264,29 @@ static int axiemac_phy_init(struct udevice *dev) /* Setting axi emac and phy to proper setting */ 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 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); |