| Jincheng Li | 3199802 | 2024-03-13 15:06:26 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | |
| 3 | #include <soc/ddr.h> |
| 4 | |
| 5 | uint32_t get_ddr_voltage(uint8_t ddr_voltage) |
| 6 | { |
| 7 | /* SPD Byte 11: Module Nominal Voltage, currently DDR4 only supports 1.2V. |
| 8 | Either Bit 0 or Bit 1 is set, return 1.2V */ |
| 9 | if (ddr_voltage & 0x3) |
| 10 | return 1200; |
| 11 | return 0; |
| 12 | } |
| 13 | |
| 14 | unsigned int get_ddr_millivolt(unsigned int ddr_voltage) |
| 15 | { |
| 16 | switch (ddr_voltage) { |
| 17 | case SPD_VDD_DDR4: |
| 18 | return 1200; |
| 19 | case SPD_VDD_DDR5: |
| 20 | return 1100; |
| 21 | default: |
| 22 | return 0; |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | unsigned int get_max_memory_speed(unsigned int common_tck) |
| 27 | { |
| 28 | if (common_tck <= DDR_8400_TCK_MIN) |
| 29 | return 8400; |
| 30 | else if (common_tck <= DDR_7600_TCK_MIN) |
| 31 | return 7600; |
| 32 | else if (common_tck <= DDR_7200_TCK_MIN) |
| 33 | return 7200; |
| 34 | else if (common_tck <= DDR_6800_TCK_MIN) |
| 35 | return 6800; |
| 36 | else if (common_tck <= DDR_6400_TCK_MIN) |
| 37 | return 6400; |
| 38 | else if (common_tck <= DDR_6000_TCK_MIN) |
| 39 | return 6000; |
| 40 | else if (common_tck <= DDR_5600_TCK_MIN) |
| 41 | return 5600; |
| 42 | else if (common_tck <= DDR_5200_TCK_MIN) |
| 43 | return 5200; |
| 44 | else if (common_tck <= DDR_4800_TCK_MIN) |
| 45 | return 4800; |
| 46 | else if (common_tck <= DDR_4400_TCK_MIN) |
| 47 | return 4400; |
| 48 | else if (common_tck <= DDR_4266_TCK_MIN) |
| 49 | return 4266; |
| 50 | else if (common_tck <= DDR_4200_TCK_MIN) |
| 51 | return 4200; |
| 52 | else if (common_tck <= DDR_4000_TCK_MIN) |
| 53 | return 4000; |
| 54 | else if (common_tck <= DDR_3800_TCK_MIN) |
| 55 | return 3800; |
| 56 | else if (common_tck <= DDR_3733_TCK_MIN) |
| 57 | return 3733; |
| 58 | else if (common_tck <= DDR_3600_TCK_MIN) |
| 59 | return 3600; |
| 60 | else if (common_tck <= DDR_3466_TCK_MIN) |
| 61 | return 3466; |
| 62 | else if (common_tck <= DDR_3400_TCK_MIN) |
| 63 | return 3400; |
| 64 | else if (common_tck <= DDR_3200_TCK_MIN) |
| 65 | return 3200; |
| 66 | else if (common_tck <= DDR_3000_TCK_MIN) |
| 67 | return 3000; |
| 68 | else if (common_tck <= DDR_2933_TCK_MIN) |
| 69 | return 2933; |
| 70 | else if (common_tck <= DDR_2800_TCK_MIN) |
| 71 | return 2800; |
| 72 | else if (common_tck <= DDR_2666_TCK_MIN) |
| 73 | return 2666; |
| 74 | else if (common_tck <= DDR_2600_TCK_MIN) |
| 75 | return 2600; |
| 76 | else if (common_tck <= DDR_2400_TCK_MIN) |
| 77 | return 2400; |
| 78 | else if (common_tck <= DDR_2200_TCK_MIN) |
| 79 | return 2200; |
| 80 | else if (common_tck <= DDR_2133_TCK_MIN) |
| 81 | return 2133; |
| 82 | else if (common_tck <= DDR_2000_TCK_MIN) |
| 83 | return 2000; |
| 84 | else if (common_tck <= DDR_1866_TCK_MIN) |
| 85 | return 1866; |
| 86 | else if (common_tck <= DDR_1800_TCK_MIN) |
| 87 | return 1800; |
| 88 | else if (common_tck <= DDR_1600_TCK_MIN) |
| 89 | return 1600; |
| 90 | else if (common_tck <= DDR_1400_TCK_MIN) |
| 91 | return 1400; |
| 92 | else if (common_tck <= DDR_1333_TCK_MIN) |
| 93 | return 1333; |
| 94 | else if (common_tck <= DDR_1200_TCK_MIN) |
| 95 | return 1200; |
| 96 | else if (common_tck <= DDR_1066_TCK_MIN) |
| 97 | return 1066; |
| 98 | else if (common_tck <= DDR_1000_TCK_MIN) |
| 99 | return 1000; |
| 100 | else |
| 101 | return 800; |
| 102 | } |
| 103 | |
| 104 | __weak bool mainboard_dimm_slot_exists(uint8_t socket, uint8_t channel, uint8_t slot) |
| 105 | { |
| 106 | return false; |
| 107 | } |