MC_ARB_DRAM_TIMING_3
mc_arb_dram_timing = RREG32(MC_ARB_DRAM_TIMING_3);
WREG32(MC_ARB_DRAM_TIMING_3, mc_arb_dram_timing);
mc_arb_dram_timing = RREG32(MC_ARB_DRAM_TIMING_3);
WREG32(MC_ARB_DRAM_TIMING_3, mc_arb_dram_timing);
WREG32(MC_ARB_DRAM_TIMING_3, dram_timing);