PPSMC_MSG_API_GetSclkFrequency
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_API_GetSclkFrequency, &sclk);
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_API_GetSclkFrequency, &clock);
PPSMC_MSG_API_GetSclkFrequency,