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/* SPDX-License-Identifier: GPL-2.0-only */
#include <amdblocks/cpu.h>
#include <soc/msr.h>
#include <types.h>
/* Value defined in Serial VID Interface 2.0 spec (#48022, NDA only) */
#define SERIAL_VID_2_DECODE_MICROVOLTS 6250
#define SERIAL_VID_2_MAX_MICROVOLTS 1550000L
uint32_t get_uvolts_from_vid(uint16_t core_vid)
{
if (core_vid >= 0xF8) {
/* Voltage off for VID codes >= 0xF8 */
return 0;
} else {
return SERIAL_VID_2_MAX_MICROVOLTS -
(SERIAL_VID_2_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);
}
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