[PATCH 3/3] ethernet: stmmac: dwmac-rk: Make the phy clock could be used for external phy

[Kever Yang <kever.yang@rock-chips.com>]

From: David Wu <david.wu@rock-chips.com>

Use the phy_clk to prepare_enable and unprepare_disable related phy clock.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
---

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 2ce38bf205d4..506c7daefa63 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1885,12 +1885,14 @@ static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat)
 		clk_set_rate(bsp_priv->clk_mac, 50000000);
 	}
 
-	if (plat->phy_node && bsp_priv->integrated_phy) {
+	if (plat->phy_node) {
 		bsp_priv->clk_phy = of_clk_get(plat->phy_node, 0);
 		ret = PTR_ERR_OR_ZERO(bsp_priv->clk_phy);
 		if (ret)
 			return dev_err_probe(dev, ret, "Cannot get PHY clock\n");
-		clk_set_rate(bsp_priv->clk_phy, 50000000);
+		/* If it is not integrated_phy, clk_phy is optional */
+		if (bsp_priv->integrated_phy)
+			clk_set_rate(bsp_priv->clk_phy, 50000000);
 	}
 
 	return 0;
-- 
2.25.1