MC_ARB_DRAM_TIMING_2
mc_arb_dram_timing = RREG32(MC_ARB_DRAM_TIMING_2);
WREG32(MC_ARB_DRAM_TIMING_2, mc_arb_dram_timing);
mc_arb_dram_timing = RREG32(MC_ARB_DRAM_TIMING_2);
WREG32(MC_ARB_DRAM_TIMING_2, mc_arb_dram_timing);
WREG32(MC_ARB_DRAM_TIMING_2, dram_timing);