arch/arm/cpu/arm926ejs/davinci/et1011c.c

   1 /*
   2  * LSI ET1011C PHY Driver for TI DaVinci(TMS320DM6467) board.
   3  *
   4  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <net.h>
  11 #include <miiphy.h>
  12 #include <asm/arch/emac_defs.h>
  13 #include "../../../../../drivers/net/davinci_emac.h"
  14
  15 #ifdef CONFIG_DRIVER_TI_EMAC
  16
  17 #ifdef CONFIG_CMD_NET
  18
  19 /* LSI PHYSICAL LAYER TRANSCEIVER ET1011C */
  20
  21 #define MII_PHY_CONFIG_REG              22
  22
  23 /* PHY Config bits */
  24 #define PHY_SYS_CLK_EN                  (1 << 4)
  25
  26 int et1011c_get_link_speed(int phy_addr)
  27 {
  28         u_int16_t       data;
  29
  30         if (davinci_eth_phy_read(phy_addr, MII_STATUS_REG, &data) && (data & 0x04)) {
  31                 davinci_eth_phy_read(phy_addr, MII_PHY_CONFIG_REG, &data);
  32                 /* Enable 125MHz clock sourced from PHY */
  33                 davinci_eth_phy_write(phy_addr, MII_PHY_CONFIG_REG,
  34                         data | PHY_SYS_CLK_EN);
  35                 return (1);
  36         }
  37         return (0);
  38 }
  39
  40 #endif  /* CONFIG_CMD_NET */
  41
  42 #endif  /* CONFIG_DRIVER_ETHER */