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net: airoha: use mt7531 mdio for GDM1

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Current code just bind mt7531 mdio with it's driver, so mdio device may
not be probed and hense not usable.

This patch:
 * Forces probing of mt7531 mdio for GDM1 port
 * Renames the mt7531 mdio bus interface to 'mt7531-mdio'. We may have
   multiple available MDIO, so the name 'mdio' isn't descriptive enough.
 * Sets mdio bus for the GDM port device

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
This commit is contained in:
Mikhail Kshevetskiy
2026-02-11 21:22:30 +03:00
committed by Jerome Forissier
parent 08fa7baad5
commit 96d9e7c464
1 changed files with 22 additions and 4 deletions
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26
drivers/net/airoha_eth.c
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@@ -12,6 +12,7 @@
#include <dm/device-internal.h>
#include <dm/devres.h>
#include <dm/lists.h>
#include <eth_phy.h>
#include <mapmem.h>
#include <miiphy.h>
#include <net.h>
@@ -334,6 +335,7 @@ struct airoha_gdm_port {
struct airoha_eth {
void __iomem *fe_regs;
void __iomem *switch_regs;
struct udevice *switch_mdio_dev;
struct reset_ctl_bulk rsts;
struct reset_ctl_bulk xsi_rsts;
@@ -933,6 +935,8 @@ static int airoha_eth_port_probe(struct udevice *dev)
{
struct airoha_eth *eth = (void *)dev_get_driver_data(dev);
struct airoha_gdm_port *port = dev_get_priv(dev);
struct mdio_perdev_priv *pdata;
struct mii_dev *mdio_bus;
int ret;
port->qdma = &eth->qdma[0];
@@ -941,6 +945,7 @@ static int airoha_eth_port_probe(struct udevice *dev)
if (ret)
return ret;
mdio_bus = NULL;
if (port->id > 1) {
#if defined(CONFIG_PCS_AIROHA)
ret = airoha_pcs_init(dev);
@@ -948,11 +953,24 @@ static int airoha_eth_port_probe(struct udevice *dev)
return ret;
port->phydev = dm_eth_phy_connect(dev);
if (port->phydev)
mdio_bus = port->phydev->bus;
#else
return -EINVAL;
#endif
} else {
if (eth->switch_mdio_dev &&
!device_probe(eth->switch_mdio_dev)) {
pdata = dev_get_uclass_priv(eth->switch_mdio_dev);
mdio_bus = pdata->mii_bus;
}
}
#ifdef CONFIG_DM_ETH_PHY
if (!IS_ERR_OR_NULL(mdio_bus))
eth_phy_set_mdio_bus(dev, mdio_bus);
#endif
return 0;
}
@@ -1197,9 +1215,9 @@ static int arht_eth_write_hwaddr(struct udevice *dev)
static int airoha_eth_bind(struct udevice *dev)
{
struct airoha_eth_soc_data *data = (void *)dev_get_driver_data(dev);
struct airoha_eth *eth = dev_get_priv(dev);
ofnode switch_node, mdio_node;
struct udevice *mdio_dev;
int ret = 0;
int ret;
/*
* Force Probe as we set the Main ETH driver as misc
@@ -1223,8 +1241,8 @@ static int airoha_eth_bind(struct udevice *dev)
return 0;
}
ret = device_bind_driver_to_node(dev, "mt7531-mdio-mmio", "mdio",
mdio_node, &mdio_dev);
ret = device_bind_driver_to_node(dev, "mt7531-mdio-mmio", "mt7531-mdio",
mdio_node, &eth->switch_mdio_dev);
if (ret)
debug("Warning: failed to bind mdio controller\n");