From: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com
Add phy driver support for xilinx PCS/PMA core
Signed-off-by: Siva Durga Prasad Paladugu sivadur@xilinx.com Signed-off-by: Kedareswara rao Appana appanad@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---
drivers/net/phy/Makefile | 1 + drivers/net/phy/phy.c | 3 + drivers/net/phy/xilinx_phy.c | 144 +++++++++++++++++++++++++++++++++++++++++++ include/phy.h | 1 + 4 files changed, 149 insertions(+) create mode 100644 drivers/net/phy/xilinx_phy.c
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 9e4d4927e676..1e299b97b961 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -25,4 +25,5 @@ obj-$(CONFIG_PHY_REALTEK) += realtek.o obj-$(CONFIG_PHY_SMSC) += smsc.o obj-$(CONFIG_PHY_TERANETICS) += teranetics.o obj-$(CONFIG_PHY_TI) += ti.o +obj-$(CONFIG_PHY_XILINX) += xilinx_phy.o obj-$(CONFIG_PHY_VITESSE) += vitesse.o diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 17866a244b3a..23c82bb36e93 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -503,6 +503,9 @@ int phy_init(void) #ifdef CONFIG_PHY_VITESSE phy_vitesse_init(); #endif +#ifdef CONFIG_PHY_XILINX + phy_xilinx_init(); +#endif
return 0; } diff --git a/drivers/net/phy/xilinx_phy.c b/drivers/net/phy/xilinx_phy.c new file mode 100644 index 000000000000..f3eaf2e97ced --- /dev/null +++ b/drivers/net/phy/xilinx_phy.c @@ -0,0 +1,144 @@ +/* + * Xilinx PCS/PMA Core phy driver + * + * Copyright (C) 2015 - 2016 Xilinx, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <config.h> +#include <common.h> +#include <phy.h> +#include <dm.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define MII_PHY_STATUS_SPD_MASK 0x0C00 +#define MII_PHY_STATUS_FULLDUPLEX 0x1000 +#define MII_PHY_STATUS_1000 0x0800 +#define MII_PHY_STATUS_100 0x0400 +#define XPCSPMA_PHY_CTRL_ISOLATE_DISABLE 0xFBFF + +/* Mask used for ID comparisons */ +#define XILINX_PHY_ID_MASK 0xfffffff0 + +/* Known PHY IDs */ +#define XILINX_PHY_ID 0x01740c00 + +/* struct phy_device dev_flags definitions */ +#define XAE_PHY_TYPE_MII 0 +#define XAE_PHY_TYPE_GMII 1 +#define XAE_PHY_TYPE_RGMII_1_3 2 +#define XAE_PHY_TYPE_RGMII_2_0 3 +#define XAE_PHY_TYPE_SGMII 4 +#define XAE_PHY_TYPE_1000BASE_X 5 + +static int xilinxphy_startup(struct phy_device *phydev) +{ + int err; + int status = 0; + + debug("%s\n", __func__); + /* 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, MDIO_DEVAD_NONE, MII_LPA); + status = status & MII_PHY_STATUS_SPD_MASK; + + if (status & MII_PHY_STATUS_FULLDUPLEX) + phydev->duplex = DUPLEX_FULL; + else + phydev->duplex = DUPLEX_HALF; + + switch (status) { + case MII_PHY_STATUS_1000: + phydev->speed = SPEED_1000; + break; + + case MII_PHY_STATUS_100: + phydev->speed = SPEED_100; + break; + + default: + phydev->speed = SPEED_10; + break; + } + } else { + int bmcr = phy_read(phydev, MDIO_DEVAD_NONE, 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; + } + + /* + * For 1000BASE-X Phy Mode the speed/duplex will always be + * 1000Mbps/fullduplex + */ + if (phydev->flags == XAE_PHY_TYPE_1000BASE_X) { + phydev->duplex = DUPLEX_FULL; + phydev->speed = SPEED_1000; + } + + return 0; +} + +static int xilinxphy_of_init(struct phy_device *phydev) +{ + struct udevice *dev = (struct udevice *)&phydev->dev; + u32 phytype; + + debug("%s\n", __func__); + phytype = fdtdec_get_int(gd->fdt_blob, dev->of_offset, "phy-type", -1); + if (phytype == XAE_PHY_TYPE_1000BASE_X) + phydev->flags |= XAE_PHY_TYPE_1000BASE_X; + + return 0; +} + +static int xilinxphy_config(struct phy_device *phydev) +{ + int temp; + + debug("%s\n", __func__); + xilinxphy_of_init(phydev); + temp = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); + temp &= XPCSPMA_PHY_CTRL_ISOLATE_DISABLE; + phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, temp); + + return 0; +} + +static struct phy_driver xilinxphy_driver = { + .uid = XILINX_PHY_ID, + .mask = XILINX_PHY_ID_MASK, + .name = "Xilinx PCS/PMA PHY", + .features = PHY_GBIT_FEATURES, + .config = &xilinxphy_config, + .startup = &xilinxphy_startup, + .shutdown = &genphy_shutdown, +}; + +int phy_xilinx_init(void) +{ + debug("%s\n", __func__); + phy_register(&xilinxphy_driver); + + return 0; +} diff --git a/include/phy.h b/include/phy.h index 09bbe483a4b1..21459a8c8093 100644 --- a/include/phy.h +++ b/include/phy.h @@ -264,6 +264,7 @@ int phy_smsc_init(void); int phy_teranetics_init(void); int phy_ti_init(void); int phy_vitesse_init(void); +int phy_xilinx_init(void);
int board_phy_config(struct phy_device *phydev); int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);