catspeed-cc/openwrt
1
1
Fork 0
Code

realtek: mdio: skip over ethernet-phy-package nodes

Browse Source 
When we look up the PHY for each switch port, we traverse to the parent
node to find the corresponding MDIO bus. This approach breaks down
when an explicit ethernet-phy-package is used to bundle multiple
PHYs in the same chip.

Signed-off-by: Manuel Stocker <mensi@mensi.ch>
Link: https://github.com/openwrt/openwrt/pull/23591
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
This commit is contained in:
Manuel Stocker 2026-05-30 20:46:18 +02:00 committed by Markus Stockhausen
parent ee6e8c88dc
commit 267886991a
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
View File

@ -749,6 +749,18 @@ static int rtmd_get_phy_info(struct rtmd_ctrl *ctrl, int pn, struct rtmd_phy_inf
return 0;
}
static struct fwnode_handle *rtmd_get_bus_node(struct fwnode_handle *phynode)
{
struct fwnode_handle *parent = fwnode_get_parent(phynode);
if (parent && fwnode_name_eq(parent, "ethernet-phy-package")) {
struct fwnode_handle *grandparent = fwnode_get_parent(parent);
fwnode_handle_put(parent);
return grandparent;
}
return parent;
}
static int rtmd_838x_setup_ctrl(struct rtmd_ctrl *ctrl)
{
/*
@ -1007,7 +1019,7 @@ static int rtmd_map_ports(struct device *dev)
if (smi_addr >= PHY_MAX_ADDR)
return dev_err_probe(dev, -EINVAL, "%pfwP illegal phy address\n", fw_phy);
struct fwnode_handle *fw_bus __free(fwnode_handle) = fwnode_get_parent(fw_phy);
struct fwnode_handle *fw_bus __free(fwnode_handle) = rtmd_get_bus_node(fw_phy);
if (!fw_bus || fwnode_property_read_u32(fw_bus, "reg", &smi_bus))
return dev_err_probe(dev, -EINVAL, "%pfwP no bus number\n",
fw_bus ?: fw_phy);