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net: airoha: bind MDIO controller on Ethernet load

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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 <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2025-10-23 19:07:45 +02:00 committed by Jerome Forissier
parent ef896333f7
commit d2145a89bc
2 changed files with 33 additions and 0 deletions
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1
drivers/net/Kconfig
View File

@ -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.

32
drivers/net/airoha_eth.c
View File

@ -10,6 +10,7 @@
#include <dm.h>
#include <dm/devres.h>
#include <dm/lists.h>
#include <mapmem.h>
#include <net.h>
#include <regmap.h>
@ -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),