The function connects an ethernet device to a PHY using DT information.
This API is only available for eth devices with an associated device tree
node.
Signed-off-by: Alex Marginean <alexandru.margin...@nxp.com>
---
include/miiphy.h | 12 ++++++++
net/mdio-uclass.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 84 insertions(+)
diff --git a/include/miiphy.h b/include/miiphy.h
index 94bf0da24a..e591d93416 100644
--- a/include/miiphy.h
+++ b/include/miiphy.h
@@ -165,6 +165,18 @@ struct phy_device *dm_mdio_phy_connect(struct udevice
*mdiodev, int phyaddr,
struct udevice *ethdev,
phy_interface_t interface);
+/**
+ * dm_eth_phy_connect - Connect an Eth device to a PHY based on device tree
+ *
+ * Picks up the DT phy-handle/mdio-handle and phy-mode from ethernet device
node
+ * and connects the ethernet device to the linked PHY.
+ *
+ * @ethdev: ethernet device
+ *
+ * @return pointer to phy_device, or 0 on error
+ */
+struct phy_device *dm_eth_phy_connect(struct udevice *ethdev);
+
#endif
#ifdef CONFIG_DM_MDIO_MUX
diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c
index 7a5f1d6dcc..cf736a3ae5 100644
--- a/net/mdio-uclass.c
+++ b/net/mdio-uclass.c
@@ -116,6 +116,78 @@ struct phy_device *dm_mdio_phy_connect(struct udevice
*mdiodev, int phyaddr,
return phy_connect(pdata->mii_bus, phyaddr, ethdev, interface);
}
+static struct phy_device *dm_eth_connect_phy_handle(struct udevice *ethdev,
+ phy_interface_t interface)
+{
+ u32 phy_phandle, phy_addr;
+ struct udevice *mdiodev;
+ struct phy_device *phy;
+ ofnode phy_node;
+
+ if (ofnode_read_u32(ethdev->node, "phy-handle", &phy_phandle)) {
+ dev_dbg(dev, "phy-handle missing in ethernet node\n");
+ return NULL;
+ }
+
+ phy_node = ofnode_get_by_phandle(phy_phandle);
+ if (!ofnode_valid(phy_node)) {
+ dev_dbg(dev, "invalid phy node\n");
+ return NULL;
+ }
+
+ if (ofnode_read_u32(phy_node, "reg", &phy_addr)) {
+ dev_dbg(ethdev, "missing reg property in phy node\n");
+ return NULL;
+ }
+
+ if (uclass_get_device_by_ofnode(UCLASS_MDIO,
+ ofnode_get_parent(phy_node),
+ &mdiodev)) {
+ dev_dbg(dev, "can't find MDIO bus for node %s\n",
+ ofnode_get_name(ofnode_get_parent(phy_node)));
+ return NULL;
+ }
+
+ phy = dm_mdio_phy_connect(mdiodev, phy_addr, ethdev, interface);
+
+ if (phy)
+ phy->node = phy_node;
+
+ return phy;
+}
+
+/* Connect to a PHY linked in eth DT node */
+struct phy_device *dm_eth_phy_connect(struct udevice *ethdev)
+{
+ const char *if_str;
+ phy_interface_t interface;
+ struct phy_device *phy;
+
+ if (!ofnode_valid(ethdev->node)) {
+ debug("%s: supplied eth dev has no DT node!\n", ethdev->name);
+ return NULL;
+ }
+
+ interface = PHY_INTERFACE_MODE_NONE;
+ if_str = ofnode_read_string(ethdev->node, "phy-mode");
+ if (if_str)
+ interface = phy_get_interface_by_name(if_str);
+ if (interface < 0)
+ interface = PHY_INTERFACE_MODE_NONE;
+
+ if (interface == PHY_INTERFACE_MODE_NONE)
+ dev_dbg(ethdev, "can't find interface mode, default to NONE\n");
+
+ phy = dm_eth_connect_phy_handle(ethdev, interface);
+
+ if (!phy)
+ return NULL;
+
+ phy->interface = interface;
+
+ return phy;
+}
+
UCLASS_DRIVER(mdio) = {
.id = UCLASS_MDIO,
.name = "mdio",
--
2.17.1
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