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realtek: mdio: use bus auto registration

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Let the mdio bus autodetect the attached phys by providing a proper
scan mask. Although this breaks the linkage to the DTS it is better
than adding phys manually.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/21968
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Markus Stockhausen 2026-02-10 12:55:15 +01:00 • committed by Robert Marko
parent df939b3316
commit 4e003062f7
1 changed files with 3 additions and 11 deletions
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14
target/linux/realtek/files-6.12/drivers/net/mdio/mdio-realtek-otto.c
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@ -177,7 +177,6 @@ struct rtmdio_ctrl {
bool raw[RTMDIO_MAX_PORT];
int smi_bus[RTMDIO_MAX_PORT];
int smi_addr[RTMDIO_MAX_PORT];
struct device_node *dn[RTMDIO_MAX_PORT];
bool smi_bus_isc45[RTMDIO_MAX_SMI_BUS];
};
@ -931,6 +930,7 @@ static int rtmdio_probe(struct platform_device *pdev)
struct rtmdio_ctrl *ctrl;
struct device_node *dn;
struct mii_bus *bus;
u64 mask = 0ULL;
int ret, addr;
bus = devm_mdiobus_alloc_size(dev, sizeof(*ctrl));
@ -967,7 +967,7 @@ static int rtmdio_probe(struct platform_device *pdev)
if (of_device_is_compatible(dn, "ethernet-phy-ieee802.3-c45"))
ctrl->smi_bus_isc45[ctrl->smi_bus[addr]] = true;
ctrl->dn[addr] = dn;
mask |= BIT_ULL(addr);
}
bus->name = "Realtek MDIO bus";
@ -977,7 +977,7 @@ static int rtmdio_probe(struct platform_device *pdev)
bus->read_c45 = rtmdio_read_c45;
bus->write_c45 = rtmdio_write_c45;
bus->parent = dev;
bus->phy_mask = ~0;
bus->phy_mask = ~mask;
snprintf(bus->id, MII_BUS_ID_SIZE, "realtek-mdio");
device_set_node(&bus->dev, of_fwnode_handle(dev->of_node));
@ -988,14 +988,6 @@ static int rtmdio_probe(struct platform_device *pdev)
if (ctrl->cfg->setup_polling)
ctrl->cfg->setup_polling(bus);
for (addr = 0; addr < ctrl->cfg->cpu_port; addr++) {
if (ctrl->dn[addr]) {
ret = fwnode_mdiobus_register_phy(bus, of_fwnode_handle(ctrl->dn[addr]), addr);
if (ret)
return ret;
}
}
return 0;
}