net: phy: introduce fixed_phy_create for DSA CPU ports

[u-boot.git] / drivers / net / phy / phy.c

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index a2be3987364c04be8ada91515b046335f6d719b9..89e3076bfd258b4e3b73d2e2e38191afe8fc9615 100644 (file)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -977,6 +977,37 @@ static struct phy_device *phy_connect_gmii2rgmii(struct mii_dev *bus,
 #endif
 
 #ifdef CONFIG_PHY_FIXED
+/**
+ * fixed_phy_create() - create an unconnected fixed-link pseudo-PHY device
+ * @node: OF node for the container of the fixed-link node
+ *
+ * Description: Creates a struct phy_device based on a fixed-link of_node
+ * description. Can be used without phy_connect by drivers which do not expose
+ * a UCLASS_ETH udevice.
+ */
+struct phy_device *fixed_phy_create(ofnode node)
+{
+       phy_interface_t interface = PHY_INTERFACE_MODE_NONE;
+       const char *if_str;
+       ofnode subnode;
+
+       if_str = ofnode_read_string(node, "phy-mode");
+       if (!if_str) {
+               if_str = ofnode_read_string(node, "phy-interface-type");
+       }
+       if (if_str) {
+               interface = phy_get_interface_by_name(if_str);
+       }
+
+       subnode = ofnode_find_subnode(node, "fixed-link");
+       if (!ofnode_valid(subnode)) {
+               return NULL;
+       }
+
+       return phy_device_create(NULL, ofnode_to_offset(subnode), PHY_FIXED_ID,
+                                false, interface);
+}
+
 #ifdef CONFIG_DM_ETH
 static struct phy_device *phy_connect_fixed(struct mii_dev *bus,
                                            struct udevice *dev,