SDMA_POWER_CNTL__MEM_POWER_OVERRIDE_MASK
data |= SDMA_POWER_CNTL__MEM_POWER_OVERRIDE_MASK;
data &= ~SDMA_POWER_CNTL__MEM_POWER_OVERRIDE_MASK;
if (data & SDMA_POWER_CNTL__MEM_POWER_OVERRIDE_MASK)