From: Ye Li <[email protected]> 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 <[email protected]> Reviewed-by: Peng Fan <[email protected]> Signed-off-by: Alice Guo <[email protected]> --- drivers/net/fsl_enetc_mdio.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/net/fsl_enetc_mdio.c b/drivers/net/fsl_enetc_mdio.c index c1d491f2c5a..3d76d92a62a 100644 --- a/drivers/net/fsl_enetc_mdio.c +++ b/drivers/net/fsl_enetc_mdio.c @@ -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; -- 2.43.0
