lxt.c 1.7 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * LXT PHY drivers
  4. *
  5. * Copyright 2010-2011 Freescale Semiconductor, Inc.
  6. * author Andy Fleming
  7. */
  8. #include <common.h>
  9. #include <phy.h>
  10. /* LXT971 Status 2 registers */
  11. #define MIIM_LXT971_SR2 0x11 /* Status Register 2 */
  12. #define MIIM_LXT971_SR2_SPEED_MASK 0x4200
  13. #define MIIM_LXT971_SR2_10HDX 0x0000 /* 10 Mbit half duplex selected */
  14. #define MIIM_LXT971_SR2_10FDX 0x0200 /* 10 Mbit full duplex selected */
  15. #define MIIM_LXT971_SR2_100HDX 0x4000 /* 100 Mbit half duplex selected */
  16. #define MIIM_LXT971_SR2_100FDX 0x4200 /* 100 Mbit full duplex selected */
  17. /* LXT971 */
  18. static int lxt971_parse_status(struct phy_device *phydev)
  19. {
  20. int mii_reg;
  21. int speed;
  22. mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_LXT971_SR2);
  23. speed = mii_reg & MIIM_LXT971_SR2_SPEED_MASK;
  24. switch (speed) {
  25. case MIIM_LXT971_SR2_10HDX:
  26. phydev->speed = SPEED_10;
  27. phydev->duplex = DUPLEX_HALF;
  28. break;
  29. case MIIM_LXT971_SR2_10FDX:
  30. phydev->speed = SPEED_10;
  31. phydev->duplex = DUPLEX_FULL;
  32. break;
  33. case MIIM_LXT971_SR2_100HDX:
  34. phydev->speed = SPEED_100;
  35. phydev->duplex = DUPLEX_HALF;
  36. break;
  37. default:
  38. phydev->speed = SPEED_100;
  39. phydev->duplex = DUPLEX_FULL;
  40. }
  41. return 0;
  42. }
  43. static int lxt971_startup(struct phy_device *phydev)
  44. {
  45. int ret;
  46. ret = genphy_update_link(phydev);
  47. if (ret)
  48. return ret;
  49. return lxt971_parse_status(phydev);
  50. }
  51. static struct phy_driver LXT971_driver = {
  52. .name = "LXT971",
  53. .uid = 0x1378e0,
  54. .mask = 0xfffff0,
  55. .features = PHY_BASIC_FEATURES,
  56. .config = &genphy_config_aneg,
  57. .startup = &lxt971_startup,
  58. .shutdown = &genphy_shutdown,
  59. };
  60. int phy_lxt_init(void)
  61. {
  62. phy_register(&LXT971_driver);
  63. return 0;
  64. }