net: designware: support phy io micro voltage setting.

Support phy io micro voltage setting for NPCM8XX rgmii
interface.

Signed-off-by: Michael Chang <zhang971090220@gmail.com>

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 94d8f1b..0a1fff3 100644 (file)
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -741,6 +741,18 @@ int designware_eth_probe(struct udevice *dev)
                        puts("Error enabling phy supply\n");
                        return ret;
                }
+#if IS_ENABLED(CONFIG_ARCH_NPCM8XX)
+               int phy_uv;
+
+               phy_uv = dev_read_u32_default(dev, "phy-supply-microvolt", 0);
+               if (phy_uv) {
+                       ret = regulator_set_value(phy_supply, phy_uv);
+                       if (ret) {
+                               puts("Error setting phy voltage\n");
+                               return ret;
+                       }
+               }
+#endif
        }
 #endif