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// SPDX-License-Identifier: GPL-2.0+
/*
* Atheros PHY drivers
*
* Copyright 2011, 2013 Freescale Semiconductor, Inc.
* author Andy Fleming
*/
#include <common.h>
#include <phy.h>
#define AR803x_PHY_DEBUG_ADDR_REG 0x1d
#define AR803x_PHY_DEBUG_DATA_REG 0x1e
#define AR803x_DEBUG_REG_5 0x5
#define AR803x_RGMII_TX_CLK_DLY BIT(8)
#define AR803x_DEBUG_REG_0 0x0
#define AR803x_RGMII_RX_CLK_DLY BIT(15)
static void ar803x_enable_rx_delay(struct phy_device *phydev, bool on)
{
int regval;
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
AR803x_DEBUG_REG_0);
regval = phy_read(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG);
if (on)
regval |= AR803x_RGMII_RX_CLK_DLY;
else
regval &= ~AR803x_RGMII_RX_CLK_DLY;
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, regval);
}
static void ar803x_enable_tx_delay(struct phy_device *phydev, bool on)
{
int regval;
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
AR803x_DEBUG_REG_5);
regval = phy_read(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG);
if (on)
regval |= AR803x_RGMII_TX_CLK_DLY;
else
regval &= ~AR803x_RGMII_TX_CLK_DLY;
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, regval);
}
static int ar8021_config(struct phy_device *phydev)
{
phy_write(phydev, MDIO_DEVAD_NONE, 0x00, 0x1200);
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_ADDR_REG,
AR803x_DEBUG_REG_5);
phy_write(phydev, MDIO_DEVAD_NONE, AR803x_PHY_DEBUG_DATA_REG, 0x3D47);
phydev->supported = phydev->drv->features;
return 0;
}
static int ar8031_config(struct phy_device *phydev)
{
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
ar803x_enable_tx_delay(phydev, true);
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
ar803x_enable_rx_delay(phydev, true);
phydev->supported = phydev->drv->features;
genphy_config_aneg(phydev);
genphy_restart_aneg(phydev);
return 0;
}
static int ar8035_config(struct phy_device *phydev)
{
int regval;
phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x0007);
phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
regval = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
phy_write(phydev, MDIO_DEVAD_NONE, 0xe, (regval|0x0018));
if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
(phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID))
ar803x_enable_tx_delay(phydev, true);
if ((phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) ||
(phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID))
ar803x_enable_rx_delay(phydev, true);
phydev->supported = phydev->drv->features;
genphy_config_aneg(phydev);
genphy_restart_aneg(phydev);
return 0;
}
static struct phy_driver AR8021_driver = {
.name = "AR8021",
.uid = 0x4dd040,
.mask = 0x4ffff0,
.features = PHY_GBIT_FEATURES,
.config = ar8021_config,
.startup = genphy_startup,
.shutdown = genphy_shutdown,
};
static struct phy_driver AR8031_driver = {
.name = "AR8031/AR8033",
.uid = 0x4dd074,
.mask = 0xffffffef,
.features = PHY_GBIT_FEATURES,
.config = ar8031_config,
.startup = genphy_startup,
.shutdown = genphy_shutdown,
};
static struct phy_driver AR8035_driver = {
.name = "AR8035",
.uid = 0x4dd072,
.mask = 0xffffffef,
.features = PHY_GBIT_FEATURES,
.config = ar8035_config,
.startup = genphy_startup,
.shutdown = genphy_shutdown,
};
int phy_atheros_init(void)
{
phy_register(&AR8021_driver);
phy_register(&AR8031_driver);
phy_register(&AR8035_driver);
return 0;
}
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