From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mingkai Hu Date: Thu, 27 Jan 2011 12:52:50 +0800 Subject: [U-Boot] [PATCH 12/14] PHY: add some Broadcom phy support In-Reply-To: <1296103972-2696-12-git-send-email-Mingkai.hu@freescale.com> References: <1296103972-2696-1-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-2-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-3-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-4-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-5-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-6-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-7-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-8-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-9-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-10-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-11-git-send-email-Mingkai.hu@freescale.com> <1296103972-2696-12-git-send-email-Mingkai.hu@freescale.com> Message-ID: <1296103972-2696-13-git-send-email-Mingkai.hu@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Port from tsec.c file to add support for bcm5461, bcm5464, bcm5482s. Signed-off-by: Mingkai Hu --- drivers/net/fsl_phy.c | 245 +++++++++++++++++++++++++++++++++++++++++++++++++ drivers/net/fsl_phy.h | 22 +++++ 2 files changed, 267 insertions(+), 0 deletions(-) diff --git a/drivers/net/fsl_phy.c b/drivers/net/fsl_phy.c index a6ec614..7c22666 100644 --- a/drivers/net/fsl_phy.c +++ b/drivers/net/fsl_phy.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "fsl_phy.h" @@ -242,6 +243,220 @@ static int genphy_shutdown(struct mii_info *phydev) return 0; } +/* Broadcom BCM5461S */ +static int bcm5461_config(struct mii_info *mii_info) +{ + unsigned int reg; + + /* reset the PHY */ + reg = tsec_phy_read(mii_info, 0, MII_BMCR); + reg |= BMCR_RESET; + tsec_phy_write(mii_info, 0, MII_BMCR, reg); + + tsec_phy_write(mii_info, 0, MII_CTRL1000, MII_CTRL1000_INIT); + tsec_phy_write(mii_info, 0, MII_ADVERTISE, MII_ADVERTISE_INIT); + + /* reset the PHY */ + reg = tsec_phy_read(mii_info, 0, MII_BMCR); + reg |= BMCR_RESET; + tsec_phy_write(mii_info, 0, MII_BMCR, reg); + + tsec_phy_write(mii_info, 0, MII_BMCR, MII_BMCR_INIT); + + return 0; +} + +static int bcm54xx_parse_status(struct mii_info *mii_info) +{ + unsigned int mii_reg; + + mii_reg = tsec_phy_read(mii_info, 0, MIIM_BCM54xx_AUXSTATUS); + + switch ((mii_reg & MIIM_BCM54xx_AUXSTATUS_LINKMODE_MASK) >> + MIIM_BCM54xx_AUXSTATUS_LINKMODE_SHIFT) { + case 1: + mii_info->duplex = DUPLEX_HALF; + mii_info->speed = SPEED_10; + break; + case 2: + mii_info->duplex = DUPLEX_FULL; + mii_info->speed = SPEED_10; + break; + case 3: + mii_info->duplex = DUPLEX_HALF; + mii_info->speed = SPEED_100; + break; + case 5: + mii_info->duplex = DUPLEX_FULL; + mii_info->speed = SPEED_100; + break; + case 6: + mii_info->duplex = DUPLEX_HALF; + mii_info->speed = SPEED_1000; + break; + case 7: + mii_info->duplex = DUPLEX_FULL; + mii_info->speed = SPEED_1000; + break; + default: + printf("Auto-neg error, defaulting to 10BT/HD\n"); + mii_info->duplex = DUPLEX_HALF; + mii_info->speed = SPEED_10; + break; + } + + return 0; +} + +static int bcm54xx_startup(struct mii_info *mii_info) +{ + /* Read the Status (2x to make sure link is right) */ + genphy_update_link(mii_info); + bcm54xx_parse_status(mii_info); + + return 0; +} + +/* Broadcom BCM5482S */ +/* + * "Ethernet at Wirespeed" needs to be enabled to achieve link in certain + * circumstances. eg a gigabit TSEC connected to a gigabit switch with + * a 4-wire ethernet cable. Both ends advertise gigabit, but can't + * link. "Ethernet at Wirespeed" reduces advertised speed until link + * can be achieved. + */ +static u32 bcm5482_read_wirespeed(struct mii_info *mii_info, u32 reg) +{ + return (tsec_phy_read(mii_info, 0, reg) & 0x8FFF) | 0x8010; +} + +static int bcm5482_config(struct mii_info *mii_info) +{ + unsigned int reg; + + /* reset the PHY */ + reg = tsec_phy_read(mii_info, 0, MII_BMCR); + reg |= BMCR_RESET; + tsec_phy_write(mii_info, 0, MII_BMCR, reg); + + /* Setup read from auxilary control shadow register 7 */ + tsec_phy_write(mii_info, 0, MIIM_BCM54xx_AUXCNTL, + MIIM_BCM54xx_AUXCNTL_ENCODE(7)); + /* Read Misc Control register and or in Ethernet at Wirespeed */ + reg = bcm5482_read_wirespeed(mii_info, MIIM_BCM54xx_AUXCNTL); + tsec_phy_write(mii_info, 0, MIIM_BCM54xx_AUXCNTL, reg); + tsec_phy_write(mii_info, 0, MII_BMCR, MII_BMCR_INIT); + /* Initial config/enable of secondary SerDes interface */ + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_SHD, + MIIM_BCM54XX_SHD_WR_ENCODE(0x14, 0xf)); + /* Write intial value to secondary SerDes Contol */ + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_EXP_SEL, + MIIM_BCM54XX_EXP_SEL_SSD | 0); + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_EXP_DATA, MII_BMCR_RESTART); + /* Enable copper/fiber auto-detect */ + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_SHD, + MIIM_BCM54XX_SHD_WR_ENCODE(0x1e, 0x201)); + + return 0; +} + +/* + * Find out if PHY is in copper or serdes mode by looking at Expansion Reg + * 0x42 - "Operating Mode Status Register" + */ +static int bcm5482_is_serdes(struct mii_info *mii_info) +{ + u16 val; + int serdes = 0; + + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_EXP_SEL, + MIIM_BCM54XX_EXP_SEL_ER | 0x42); + val = tsec_phy_read(mii_info, 0, MIIM_BCM54XX_EXP_DATA); + + switch (val & 0x1f) { + case 0x0d: /* RGMII-to-100Base-FX */ + case 0x0e: /* RGMII-to-SGMII */ + case 0x0f: /* RGMII-to-SerDes */ + case 0x12: /* SGMII-to-SerDes */ + case 0x13: /* SGMII-to-100Base-FX */ + case 0x16: /* SerDes-to-Serdes */ + serdes = 1; + break; + case 0x6: /* RGMII-to-Copper */ + case 0x14: /* SGMII-to-Copper */ + case 0x17: /* SerDes-to-Copper */ + break; + default: + printf("ERROR, invalid PHY mode (0x%x\n)", val); + break; + } + + return serdes; +} + +/* + * Determine SerDes link speed and duplex from Expansion reg 0x42 "Operating + * Mode Status Register" + */ +static u32 bcm5482_parse_serdes_sr(struct mii_info *mii_info) +{ + u16 val; + int i = 0; + + /* Wait 1s for link - Clause 37 autonegotiation happens very fast */ + while (1) { + tsec_phy_write(mii_info, 0, MIIM_BCM54XX_EXP_SEL, + MIIM_BCM54XX_EXP_SEL_ER | 0x42); + val = tsec_phy_read(mii_info, 0, MIIM_BCM54XX_EXP_DATA); + + if (val & 0x8000) + break; + + if (i++ > 1000) { + mii_info->link = 0; + return 1; + } + + udelay(1000); /* 1 ms */ + } + + mii_info->link = 1; + switch ((val >> 13) & 0x3) { + case (0x00): + mii_info->speed = 10; + break; + case (0x01): + mii_info->speed = 100; + break; + case (0x02): + mii_info->speed = 1000; + break; + } + + mii_info->duplex = (val & 0x1000) == 0x1000; + + return 0; +} + +/* + * Figure out if BCM5482 is in serdes or copper mode and determine link + * configuration accordingly + */ +static int bcm5482_startup(struct mii_info *mii_info) +{ + if (bcm5482_is_serdes(mii_info)) { + bcm5482_parse_serdes_sr(mii_info); + mii_info->flags |= TSEC_FIBER; + } else { + /* Wait for auto-negotiation to complete or fail */ + genphy_update_link(mii_info); + /* Parse BCM54xx copper aux status register */ + bcm54xx_parse_status(mii_info); + } + + return 0; +} + /* Vitesse VSC8211 */ static int vsc8211_config(struct mii_info *mii_info) { @@ -359,6 +574,33 @@ int vsc8601_config(struct mii_info *mii_info) return 0; } +static struct phy_info phy_info_BCM5461S = { + "Broadcom BCM5461S", + 0x2060c0, + 0xfffff0, + &bcm5461_config, + &bcm54xx_startup, + &genphy_shutdown, +}; + +static struct phy_info phy_info_BCM5464S = { + "Broadcom BCM5464S", + 0x2060b0, + 0xfffff0, + &bcm5461_config, + &bcm54xx_startup, + &genphy_shutdown, +}; + +static struct phy_info phy_info_BCM5482S = { + "Broadcom BCM5482S", + 0x143bcb0, + 0xffffff0, + &bcm5482_config, + &bcm5482_startup, + &genphy_shutdown, +}; + static struct phy_info phy_info_VSC8211 = { "Vitesse VSC8211", 0xfc4b0, @@ -423,6 +665,9 @@ static struct phy_info phy_info_generic = { }; static struct phy_info *phy_info[] = { + &phy_info_BCM5461S, + &phy_info_BCM5464S, + &phy_info_BCM5482S, &phy_info_VSC8211, &phy_info_VSC8221, &phy_info_VSC8244, diff --git a/drivers/net/fsl_phy.h b/drivers/net/fsl_phy.h index d18cc58..340527c 100644 --- a/drivers/net/fsl_phy.h +++ b/drivers/net/fsl_phy.h @@ -38,7 +38,9 @@ #define PHY_EXT_PAGE_ACCESS 0x1f #define MII_BMCR_INIT 0x00001140 +#define MII_BMCR_RESTART 0x00001340 #define MII_ADVERTISE_INIT 0x1e1 +#define MII_CTRL1000_INIT 0xe00 /* MII Management Configuration Register */ #define MIIMCFG_RESET_MGMT 0x80000000 @@ -100,6 +102,26 @@ #define PHY_AUTONEGOTIATE_TIMEOUT 5000 /* in ms */ +/* Broadcom BCM54xx -- taken from linux sungem_phy */ +#define MIIM_BCM54xx_AUXCNTL 0x18 +#define MIIM_BCM54xx_AUXCNTL_ENCODE(val) ((val & 0x7) << 12)|(val & 0x7) +#define MIIM_BCM54xx_AUXSTATUS 0x19 +#define MIIM_BCM54xx_AUXSTATUS_LINKMODE_MASK 0x0700 +#define MIIM_BCM54xx_AUXSTATUS_LINKMODE_SHIFT 8 + +#define MIIM_BCM54XX_SHD 0x1c +#define MIIM_BCM54XX_SHD_WRITE 0x8000 +#define MIIM_BCM54XX_SHD_VAL(x) ((x & 0x1f) << 10) +#define MIIM_BCM54XX_SHD_DATA(x) ((x & 0x3ff) << 0) +#define MIIM_BCM54XX_SHD_WR_ENCODE(val, data) \ + (MIIM_BCM54XX_SHD_WRITE | MIIM_BCM54XX_SHD_VAL(val) | \ + MIIM_BCM54XX_SHD_DATA(data)) + +#define MIIM_BCM54XX_EXP_DATA 0x15 /* Expansion register data */ +#define MIIM_BCM54XX_EXP_SEL 0x17 /* Expansion register select */ +#define MIIM_BCM54XX_EXP_SEL_SSD 0x0e00 /* Secondary SerDes select */ +#define MIIM_BCM54XX_EXP_SEL_ER 0x0f00 /* Expansion register select */ + /* Cicada Auxiliary Control/Status Register */ #define MIIM_CIS8201_AUX_CONSTAT 0x1c #define MIIM_CIS8201_AUXCONSTAT_INIT 0x0004 -- 1.6.4