mb/google/nissa/var/rull: Configure Acoustic noise mitigation
[coreboot2.git] / src / soc / amd / common / block / cpu / svi3.c
blobc2e6bed612d9ba52a3d98292bf471e88ea0caa18
1 /* SPDX-License-Identifier: GPL-2.0-only */
3 #include <amdblocks/cpu.h>
4 #include <soc/msr.h>
5 #include <types.h>
7 /* Value defined in Serial VID Interface 3.0 spec (#56413, NDA only) */
8 #define SERIAL_VID_3_DECODE_MICROVOLTS 5000
9 #define SERIAL_VID_3_BASE_MICROVOLTS 245000L
11 uint32_t get_uvolts_from_vid(uint16_t core_vid)
13 if (core_vid == 0x00) {
14 /* Voltage off for VID code 0x00 */
15 return 0;
16 } else {
17 return SERIAL_VID_3_BASE_MICROVOLTS +
18 (SERIAL_VID_3_DECODE_MICROVOLTS * core_vid);
22 uint32_t get_pstate_core_uvolts(union pstate_msr pstate_reg)
24 return get_uvolts_from_vid(pstate_reg.cpu_vid_0_7 | pstate_reg.cpu_vid_8 << 8);