net: stmmac: dwmac-rk: fixes the gmac resume after PD on/off

GMAC Power Domain(PD) will be disabled during suspend.
That will causes GRF registers reset.
So corresponding GRF registers for GMAC must be setup again.

Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 4e6a270..e2ba6c4 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -853,6 +853,16 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
                                                        "rockchip,grf");
        bsp_priv->pdev = pdev;
 
+       gmac_clk_init(bsp_priv);
+
+       return bsp_priv;
+}
+
+static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
+{
+       int ret;
+       struct device *dev = &bsp_priv->pdev->dev;
+
        /*rmii or rgmii*/
        if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RGMII) {
                dev_info(dev, "init for RGMII\n");
@@ -865,15 +875,6 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
                dev_err(dev, "NO interface defined!\n");
        }
 
-       gmac_clk_init(bsp_priv);
-
-       return bsp_priv;
-}
-
-static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
-{
-       int ret;
-
        ret = phy_power_on(bsp_priv, true);
        if (ret)
                return ret;