| Matt DeVillier | bb9d106 | 2022-08-22 17:27:11 -0500 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | #ifndef DEVICE_DRAM_DDR5_H |
| 4 | #define DEVICE_DRAM_DDR5_H |
| 5 | |
| 6 | /** |
| 7 | * @file ddr5.h |
| 8 | * |
| 9 | * \brief Utilities for decoding (LP)DDR5 info |
| 10 | */ |
| 11 | |
| 12 | #include <device/dram/common.h> |
| 13 | #include <types.h> |
| 14 | |
| Martin Roth | 58964ff | 2023-10-23 09:59:09 -0600 | [diff] [blame] | 15 | /** Maximum SPD size supported */ |
| 16 | #define SPD_SIZE_MAX_DDR5 1024 |
| 17 | |
| Elyes Haouas | 305ee06 | 2024-04-30 22:38:25 +0200 | [diff] [blame] | 18 | enum ddr5_module_type { |
| 19 | DDR5_SPD_RDIMM = 0x01, |
| 20 | DDR5_SPD_UDIMM = 0x02, |
| 21 | DDR5_SPD_SODIMM = 0x03, |
| 22 | DDR5_SPD_LRDIMM = 0x04, |
| 23 | DDR5_SPD_MINI_RDIMM = 0x05, |
| 24 | DDR5_SPD_MINI_UDIMM = 0x06, |
| 25 | DDR5_SPD_72B_SO_UDIMM = 0x08, |
| 26 | DDR5_SPD_72B_SO_RDIMM = 0x09, |
| 27 | DDR5_SPD_SOLDERED_DOWN = 0x0b, |
| 28 | DDR5_SPD_16B_SO_DIMM = 0x0c, |
| 29 | DDR5_SPD_32B_SO_RDIMM = 0x0d, |
| 30 | DDR5_SPD_1DPC = 0x0e, |
| 31 | DDR5_SPD_2DPC = 0x0f, |
| 32 | }; |
| 33 | |
| Matt DeVillier | bb9d106 | 2022-08-22 17:27:11 -0500 | [diff] [blame] | 34 | /** |
| 35 | * Converts DDR5 clock speed in MHz to the standard reported speed in MT/s |
| 36 | */ |
| 37 | uint16_t ddr5_speed_mhz_to_reported_mts(uint16_t speed_mhz); |
| 38 | |
| 39 | #endif /* DEVICE_DRAM_DDR5_H */ |