SMU_SCLK_DPM_CNTL
if (RREG32_SMC(SMU_SCLK_DPM_CNTL) & SCLK_DPM_EN(1))
u32 value = RREG32_SMC(SMU_SCLK_DPM_CNTL);
WREG32_SMC(SMU_SCLK_DPM_CNTL, value);
sclk_dpm_cntl = RREG32_SMC(SMU_SCLK_DPM_CNTL);
WREG32_SMC(SMU_SCLK_DPM_CNTL, sclk_dpm_cntl);