From d2145a89bcf6d64c8ea69910a40f4d66766cccb0 Mon Sep 17 00:00:00 2001 From: Christian Marangi Date: Thu, 23 Oct 2025 19:07:45 +0200 Subject: [PATCH] net: airoha: bind MDIO controller on Ethernet load Bind MDIO controller on Ethernet Controller load. The Airoha AN7581 SoC have an integrated Switch based on MT7531 (or more saying MT7988). Attach it to the mdio node in the switch node to support scanning for MDIO devices on the BUS with DM API. Signed-off-by: Christian Marangi --- drivers/net/Kconfig | 1 + drivers/net/airoha_eth.c | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 544e302d600..f382a7752d5 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -126,6 +126,7 @@ config AIROHA_ETH depends on ARCH_AIROHA select PHYLIB select DM_RESET + select MDIO_MT7531 help This Driver support Airoha Ethernet QDMA Driver Say Y to enable support for the Airoha Ethernet QDMA. diff --git a/drivers/net/airoha_eth.c b/drivers/net/airoha_eth.c index 3234d875887..046b677d78e 100644 --- a/drivers/net/airoha_eth.c +++ b/drivers/net/airoha_eth.c @@ -10,6 +10,7 @@ #include #include +#include #include #include #include @@ -982,6 +983,36 @@ static int arht_eth_write_hwaddr(struct udevice *dev) return 0; } +static int airoha_eth_bind(struct udevice *dev) +{ + ofnode switch_node, mdio_node; + struct udevice *mdio_dev; + int ret = 0; + + if (!CONFIG_IS_ENABLED(MDIO_MT7531)) + return 0; + + switch_node = ofnode_by_compatible(ofnode_null(), + "airoha,en7581-switch"); + if (!ofnode_valid(switch_node)) { + debug("Warning: missing switch node\n"); + return 0; + } + + mdio_node = ofnode_find_subnode(switch_node, "mdio"); + if (!ofnode_valid(mdio_node)) { + debug("Warning: missing mdio node\n"); + return 0; + } + + ret = device_bind_driver_to_node(dev, "mt7531-mdio", "mdio", + mdio_node, &mdio_dev); + if (ret) + debug("Warning: failed to bind mdio controller\n"); + + return 0; +} + static const struct airoha_eth_soc_data en7523_data = { .xsi_rsts_names = en7523_xsi_rsts_names, .num_xsi_rsts = ARRAY_SIZE(en7523_xsi_rsts_names), @@ -1018,6 +1049,7 @@ U_BOOT_DRIVER(airoha_eth) = { .id = UCLASS_ETH, .of_match = airoha_eth_ids, .probe = airoha_eth_probe, + .bind = airoha_eth_bind, .ops = &airoha_eth_ops, .priv_auto = sizeof(struct airoha_eth), .plat_auto = sizeof(struct eth_pdata), -- 2.47.3