This adds initial support for Marvell PHY specific drivers. As a first PHY, a driver for MV88E1121R is ported over from Linux.
Signed-off-by: Sebastian Hesselbarth <[email protected]> --- Cc: [email protected] --- drivers/net/phy/Kconfig | 5 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/marvell.c | 199 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 205 insertions(+) create mode 100644 drivers/net/phy/marvell.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 02e1e83c0b65..d0a02c1e402d 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -18,6 +18,11 @@ config LXT_PHY ---help--- Currently supports the lxt971 PHY. +config MARVELL_PHY + tristate "Drivers for Marvell PHYs" + ---help--- + Add support for various Marvell PHYs (e.g. 88E1121R). + config MICREL_PHY bool "Driver for Micrel PHYs" ---help--- diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 7f8277f1d52a..94b9be83ea7a 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -1,6 +1,7 @@ obj-y += phy.o mdio_bus.o obj-$(CONFIG_AT803X_PHY) += at803x.o obj-$(CONFIG_LXT_PHY) += lxt.o +obj-$(CONFIG_MARVELL_PHY) += marvell.o obj-$(CONFIG_MICREL_PHY) += micrel.o obj-$(CONFIG_NATIONAL_PHY) += national.o obj-$(CONFIG_SMSC_PHY) += smsc.o diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c new file mode 100644 index 000000000000..34f852e06550 --- /dev/null +++ b/drivers/net/phy/marvell.c @@ -0,0 +1,199 @@ +/* + * drivers/net/phy/marvell.c + * + * Driver for Marvell PHYs based on Linux driver + */ + +#include <common.h> +#include <init.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/phy.h> +#include <linux/smscphy.h> + +/* Known PHY IDs */ +#define MARVELL_PHY_ID_88E1101 0x01410c60 +#define MARVELL_PHY_ID_88E1112 0x01410c90 +#define MARVELL_PHY_ID_88E1111 0x01410cc0 +#define MARVELL_PHY_ID_88E1118 0x01410e10 +#define MARVELL_PHY_ID_88E1121R 0x01410cb0 +#define MARVELL_PHY_ID_88E1145 0x01410cd0 +#define MARVELL_PHY_ID_88E1149R 0x01410e50 +#define MARVELL_PHY_ID_88E1240 0x01410e30 +#define MARVELL_PHY_ID_88E1318S 0x01410e90 +#define MARVELL_PHY_ID_88E1116R 0x01410e40 +#define MARVELL_PHY_ID_88E1510 0x01410dd0 + +/* Mask used for ID comparisons */ +#define MARVELL_PHY_ID_MASK 0xfffffff0 + +/* Marvell Register Page register */ +#define MII_MARVELL_PHY_PAGE 22 +#define MII_MARVELL_PHY_DEFAULT_PAGE 0 + +#define MII_M1011_PHY_SCR 0x10 +#define MII_M1011_PHY_SCR_AUTO_CROSS 0x0060 + +#define MII_M1011_PHY_STATUS 0x11 +#define MII_M1011_PHY_STATUS_1000 BIT(15) +#define MII_M1011_PHY_STATUS_100 BIT(14) +#define MII_M1011_PHY_STATUS_SPD_MASK \ + (MII_M1011_PHY_STATUS_1000 | MII_M1011_PHY_STATUS_100) +#define MII_M1011_PHY_STATUS_FULLDUPLEX BIT(13) +#define MII_M1011_PHY_STATUS_RESOLVED BIT(11) +#define MII_M1011_PHY_STATUS_LINK BIT(10) + +#define MII_88E1121_PHY_MSCR_PAGE 2 +#define MII_88E1121_PHY_MSCR 0x15 +#define MII_88E1121_PHY_MSCR_TX_DELAY BIT(4) +#define MII_88E1121_PHY_MSCR_RX_DELAY BIT(5) +#define MII_88E1121_PHY_MSCR_DELAY_MASK \ + (MII_88E1121_PHY_MSCR_RX_DELAY | MII_88E1121_PHY_MSCR_TX_DELAY) + +/* + * marvell_read_status + * + * Generic status code does not detect Fiber correctly! + * Description: + * Check the link, then figure out the current state + * by comparing what we advertise with what the link partner + * advertises. Start by checking the gigabit possibilities, + * then move on to 10/100. + */ +static int marvell_read_status(struct phy_device *phydev) +{ + int adv; + int err; + int lpa; + int status = 0; + + /* Update the link, but return if there + * was an error */ + err = genphy_update_link(phydev); + if (err) + return err; + + if (AUTONEG_ENABLE == phydev->autoneg) { + status = phy_read(phydev, MII_M1011_PHY_STATUS); + if (status < 0) + return status; + + lpa = phy_read(phydev, MII_LPA); + if (lpa < 0) + return lpa; + + adv = phy_read(phydev, MII_ADVERTISE); + if (adv < 0) + return adv; + + lpa &= adv; + + if (status & MII_M1011_PHY_STATUS_FULLDUPLEX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + + status = status & MII_M1011_PHY_STATUS_SPD_MASK; + phydev->pause = phydev->asym_pause = 0; + + switch (status) { + case MII_M1011_PHY_STATUS_1000: + phydev->speed = SPEED_1000; + break; + + case MII_M1011_PHY_STATUS_100: + phydev->speed = SPEED_100; + break; + + default: + phydev->speed = SPEED_10; + break; + } + + if (phydev->duplex == DUPLEX_FULL) { + phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; + phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; + } + } else { + int bmcr = phy_read(phydev, MII_BMCR); + + if (bmcr < 0) + return bmcr; + + if (bmcr & BMCR_FULLDPLX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + + if (bmcr & BMCR_SPEED1000) + phydev->speed = SPEED_1000; + else if (bmcr & BMCR_SPEED100) + phydev->speed = SPEED_100; + else + phydev->speed = SPEED_10; + + phydev->pause = phydev->asym_pause = 0; + } + + return 0; +} + +static int m88e1121_config_init(struct phy_device *phydev) +{ + u16 reg; + int ret; + + ret = phy_write(phydev, MII_MARVELL_PHY_PAGE, + MII_88E1121_PHY_MSCR_PAGE); + if (ret < 0) + return ret; + + /* Setup RGMII TX/RX delay */ + reg = phy_read(phydev, MII_88E1121_PHY_MSCR) & + ~MII_88E1121_PHY_MSCR_DELAY_MASK; + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || + phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) + reg |= MII_88E1121_PHY_MSCR_RX_DELAY; + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID || + phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + reg |= MII_88E1121_PHY_MSCR_TX_DELAY; + ret = phy_write(phydev, MII_88E1121_PHY_MSCR, reg); + if (ret < 0) + return ret; + + phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_MARVELL_PHY_DEFAULT_PAGE); + if (ret < 0) + return ret; + + /* Enable auto-crossover */ + ret = phy_write(phydev, MII_M1011_PHY_SCR, + MII_M1011_PHY_SCR_AUTO_CROSS); + if (ret < 0) + return ret; + + /* Reset PHY */ + ret = phy_write(phydev, MII_BMCR, + phy_read(phydev, MII_BMCR) | BMCR_RESET); + if (ret < 0) + return ret; + + return 0; +} + +static struct phy_driver marvell_phys[] = { +{ + .phy_id = MARVELL_PHY_ID_88E1121R, + .phy_id_mask = MARVELL_PHY_ID_MASK, + .drv.name = "Marvell 88E1121R", + .features = PHY_GBIT_FEATURES, + .config_init = m88e1121_config_init, + .config_aneg = genphy_config_aneg, + .read_status = marvell_read_status, +}, +}; + +static int __init marvell_phy_init(void) +{ + return phy_drivers_register(marvell_phys, ARRAY_SIZE(marvell_phys)); +} +fs_initcall(marvell_phy_init); -- 2.0.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
