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net: fsl_enetc_mdio: Add support for phy-supply property

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Add support for the optional 'phy-supply' property in the ENETC MDIO
driver. This allows the driver to enable and manage the PHY's power
supply via the regulator framework when specified in device tree.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
This commit is contained in:
Ye Li
2025-10-28 10:46:30 +08:00
committed by Fabio Estevam
parent f4e9645108
commit b810035c83
1 changed files with 25 additions and 0 deletions
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25
drivers/net/fsl_enetc_mdio.c
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@@ -11,6 +11,8 @@
#include <asm/io.h>
#include <asm/processor.h>
#include <miiphy.h>
#include <linux/delay.h>
#include <power/regulator.h>
#include "fsl_enetc.h"
@@ -135,6 +137,8 @@ static int enetc_mdio_probe(struct udevice *dev)
struct pci_child_plat *pplat = dev_get_parent_plat(dev);
struct enetc_mdio_priv *priv = dev_get_priv(dev);
u16 cmd = PCI_COMMAND_MEMORY;
int ret;
struct udevice *supply = NULL;
priv->regs_base = dm_pci_map_bar(dev, PCI_BASE_ADDRESS_0, 0, 0, PCI_REGION_TYPE, 0);
if (!priv->regs_base) {
@@ -144,6 +148,27 @@ static int enetc_mdio_probe(struct udevice *dev)
priv->regs_base += ENETC_MDIO_BASE;
if (CONFIG_IS_ENABLED(DM_REGULATOR)) {
ret = device_get_supply_regulator(dev, "phy-supply",
&supply);
if (ret && ret != -ENOENT) {
printf("%s: device_get_supply_regulator failed: %d\n",
__func__, ret);
return ret;
}
if (supply) {
regulator_set_enable(supply, false);
mdelay(100);
ret = regulator_set_enable_if_allowed(supply, true);
if (ret) {
printf("%s: Error enabling phy supply\n", dev->name);
return ret;
}
}
}
if (pplat->vendor == PCI_VENDOR_ID_PHILIPS) /* i.MX95 */
cmd |= PCI_COMMAND_MASTER;