ddr.h 1.9 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright 2014 Freescale Semiconductor, Inc.
  4. */
  5. #ifndef __DDR_H__
  6. #define __DDR_H__
  7. struct board_specific_parameters {
  8. u32 n_ranks;
  9. u32 datarate_mhz_high;
  10. u32 rank_gb;
  11. u32 clk_adjust;
  12. u32 wrlvl_start;
  13. u32 wrlvl_ctl_2;
  14. u32 wrlvl_ctl_3;
  15. };
  16. /*
  17. * These tables contain all valid speeds we want to override with board
  18. * specific parameters. datarate_mhz_high values need to be in ascending order
  19. * for each n_ranks group.
  20. */
  21. static const struct board_specific_parameters udimm0[] = {
  22. /*
  23. * memory controller 0
  24. * num| hi| rank| clk| wrlvl | wrlvl | wrlvl
  25. * ranks| mhz| GB |adjst| start | ctl2 | ctl3
  26. */
  27. {2, 2140, 0, 4, 4, 0x0, 0x0},
  28. {1, 2140, 0, 4, 4, 0x0, 0x0},
  29. {}
  30. };
  31. /* DP-DDR DIMM */
  32. static const struct board_specific_parameters udimm2[] = {
  33. /*
  34. * memory controller 2
  35. * num| hi| rank| clk| wrlvl | wrlvl | wrlvl
  36. * ranks| mhz| GB |adjst| start | ctl2 | ctl3
  37. */
  38. {2, 2140, 0, 4, 4, 0x0, 0x0},
  39. {1, 2140, 0, 4, 4, 0x0, 0x0},
  40. {}
  41. };
  42. static const struct board_specific_parameters rdimm0[] = {
  43. /*
  44. * memory controller 0
  45. * num| hi| rank| clk| wrlvl | wrlvl | wrlvl
  46. * ranks| mhz| GB |adjst| start | ctl2 | ctl3
  47. */
  48. {4, 2140, 0, 5, 4, 0x0, 0x0},
  49. {2, 2140, 0, 5, 4, 0x0, 0x0},
  50. {1, 2140, 0, 4, 4, 0x0, 0x0},
  51. {}
  52. };
  53. /* DP-DDR DIMM */
  54. static const struct board_specific_parameters rdimm2[] = {
  55. /*
  56. * memory controller 2
  57. * num| hi| rank| clk| wrlvl | wrlvl | wrlvl
  58. * ranks| mhz| GB |adjst| start | ctl2 | ctl3
  59. */
  60. {4, 2140, 0, 5, 4, 0x0, 0x0},
  61. {2, 2140, 0, 5, 4, 0x0, 0x0},
  62. {1, 2140, 0, 4, 4, 0x0, 0x0},
  63. {}
  64. };
  65. static const struct board_specific_parameters *udimms[] = {
  66. udimm0,
  67. udimm0,
  68. udimm2,
  69. };
  70. static const struct board_specific_parameters *rdimms[] = {
  71. rdimm0,
  72. rdimm0,
  73. rdimm2,
  74. };
  75. #endif