From 052bff838ba34a8f882800fdd78d97370565d2c5 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 5 Mar 2024 15:24:53 +0200 Subject: [PATCH] net: mdio-uclass: Bind and probe generic Ethernet PHY driver If DM_ETH_PHY is enabled then try to bind and probe the generic Ethernet PHY driver for each child of MDIO bus. This is to ensure that GPIO reset handling is done if available before MDIO bus driver scans for the PHYs. Signed-off-by: Roger Quadros --- net/mdio-uclass.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c index 6fc7034111..0ebfb2f134 100644 --- a/net/mdio-uclass.c +++ b/net/mdio-uclass.c @@ -6,6 +6,8 @@ #include #include +#include +#include #include #include #include @@ -121,6 +123,42 @@ static int mdio_reset(struct mii_dev *mii_bus) return dm_mdio_reset(mii_bus->priv); } +static int mdio_bind_phy_nodes(struct udevice *mdio_dev) +{ + ofnode mdio_node, phy_node; + struct udevice *phy_dev; + const char *node_name; + int ret; + + mdio_node = dev_ofnode(mdio_dev); + if (!ofnode_valid(mdio_node)) { + dev_dbg(mdio_dev, "invalid ofnode for mdio_dev\n"); + return -ENXIO; + } + + ofnode_for_each_subnode(phy_node, mdio_node) { + node_name = ofnode_get_name(phy_node); + dev_dbg(mdio_dev, "* Found child node: '%s'\n", node_name); + ret = device_bind_driver_to_node(mdio_dev, + "eth_phy_generic_drv", + node_name, phy_node, &phy_dev); + if (ret) { + dev_dbg(mdio_dev, " - Eth phy binding error: %d\n", ret); + continue; + } + + dev_dbg(mdio_dev, " - bound phy device: '%s'\n", node_name); + ret = device_probe(phy_dev); + if (ret) { + dev_dbg(mdio_dev, "Device '%s' probe failed\n", phy_dev->name); + device_unbind(phy_dev); + continue; + } + } + + return 0; +} + static int dm_mdio_post_probe(struct udevice *dev) { struct mdio_perdev_priv *pdata = dev_get_uclass_priv(dev); @@ -154,6 +192,9 @@ static int dm_mdio_post_probe(struct udevice *dev) } } + if (CONFIG_IS_ENABLED(DM_ETH_PHY)) + mdio_bind_phy_nodes(dev); + return mdio_register(pdata->mii_bus); } -- 2.39.5