| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/cpu.h> |
| #include <soc/msr.h> |
| #include <types.h> |
| |
| /* Value defined in Serial VID Interface 3.0 spec (#56413, NDA only) */ |
| #define SERIAL_VID_3_DECODE_MICROVOLTS 5000 |
| #define SERIAL_VID_3_BASE_MICROVOLTS 245000L |
| |
| uint32_t get_uvolts_from_vid(uint16_t core_vid) |
| { |
| if (core_vid == 0x00) { |
| /* Voltage off for VID code 0x00 */ |
| return 0; |
| } else { |
| return SERIAL_VID_3_BASE_MICROVOLTS + |
| (SERIAL_VID_3_DECODE_MICROVOLTS * core_vid); |
| } |
| } |
| |
| uint32_t get_pstate_core_uvolts(union pstate_msr pstate_reg) |
| { |
| return get_uvolts_from_vid(pstate_reg.cpu_vid_0_7 | pstate_reg.cpu_vid_8 << 8); |
| } |