| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <soc/ddr.h> |
| |
| uint32_t get_ddr_voltage(uint8_t DdrVoltage) |
| { |
| /* SPD Byte 11: Module Nominal Voltage, currently DDR4 only supports 1.2V. |
| Either Bit 0 or Bit 1 is set, return 1.2V */ |
| if (DdrVoltage & 0x3) |
| return 1200; |
| return 0; |
| } |
| |
| uint16_t get_max_memory_speed(uint32_t commonTck) |
| { |
| if (commonTck <= DDR_8400_TCK_MIN) |
| return 8400; |
| else if (commonTck <= DDR_6400_TCK_MIN) |
| return 6400; |
| else if (commonTck <= DDR_6000_TCK_MIN) |
| return 6000; |
| else if (commonTck <= DDR_5600_TCK_MIN) |
| return 5600; |
| else if (commonTck <= DDR_5200_TCK_MIN) |
| return 5200; |
| else if (commonTck <= DDR_4800_TCK_MIN) |
| return 4800; |
| else if (commonTck <= DDR_4400_TCK_MIN) |
| return 4400; |
| else if (commonTck <= DDR_4266_TCK_MIN) |
| return 4266; |
| else if (commonTck <= DDR_4200_TCK_MIN) |
| return 4200; |
| else if (commonTck <= DDR_4000_TCK_MIN) |
| return 4000; |
| else if (commonTck <= DDR_3800_TCK_MIN) |
| return 3800; |
| else if (commonTck <= DDR_3733_TCK_MIN) |
| return 3733; |
| else if (commonTck <= DDR_3600_TCK_MIN) |
| return 3600; |
| else if (commonTck <= DDR_3466_TCK_MIN) |
| return 3466; |
| else if (commonTck <= DDR_3400_TCK_MIN) |
| return 3400; |
| else if (commonTck <= DDR_3200_TCK_MIN) |
| return 3200; |
| else if (commonTck <= DDR_3000_TCK_MIN) |
| return 3000; |
| else if (commonTck <= DDR_2933_TCK_MIN) |
| return 2933; |
| else if (commonTck <= DDR_2800_TCK_MIN) |
| return 2800; |
| else if (commonTck <= DDR_2666_TCK_MIN) |
| return 2666; |
| else if (commonTck <= DDR_2600_TCK_MIN) |
| return 2600; |
| else if (commonTck <= DDR_2400_TCK_MIN) |
| return 2400; |
| else if (commonTck <= DDR_2200_TCK_MIN) |
| return 2200; |
| else if (commonTck <= DDR_2133_TCK_MIN) |
| return 2133; |
| else if (commonTck <= DDR_2000_TCK_MIN) |
| return 2000; |
| else if (commonTck <= DDR_1866_TCK_MIN) |
| return 1866; |
| else if (commonTck <= DDR_1800_TCK_MIN) |
| return 1800; |
| else if (commonTck <= DDR_1600_TCK_MIN) |
| return 1600; |
| else if (commonTck <= DDR_1400_TCK_MIN) |
| return 1400; |
| else if (commonTck <= DDR_1333_TCK_MIN) |
| return 1333; |
| else if (commonTck <= DDR_1200_TCK_MIN) |
| return 1200; |
| else if (commonTck <= DDR_1066_TCK_MIN) |
| return 1066; |
| else if (commonTck <= DDR_1000_TCK_MIN) |
| return 1000; |
| else |
| return 800; |
| } |
| |
| __weak bool mainboard_dimm_slot_exists(uint8_t socket, uint8_t channel, uint8_t slot) |
| { |
| return false; |
| } |