STATE2_MASK
burst_time = (RREG32(MC_ARB_BURST_TIME) & STATE2_MASK) >> STATE2_SHIFT;
WREG32_P(MC_ARB_BURST_TIME, STATE2(burst_time), ~STATE2_MASK);
mc_arb_burst_time &= ~(STATE1_MASK | STATE2_MASK | STATE3_MASK);
burst_time = (RREG32(MC_ARB_BURST_TIME) & STATE2_MASK) >> STATE2_SHIFT;
WREG32_P(MC_ARB_BURST_TIME, STATE2(burst_time), ~STATE2_MASK);