RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK
data |= RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK;
data &= ~RLC_PG_CNTL__SMU_CLK_SLOWDOWN_ON_PD_ENABLE_MASK;