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.marginean@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",