MC_ARB_DRAM_TIMING2_2
mc_arb_dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2_2);
WREG32(MC_ARB_DRAM_TIMING2_2, mc_arb_dram_timing2);
mc_arb_dram_timing2 = RREG32(MC_ARB_DRAM_TIMING2_2);
WREG32(MC_ARB_DRAM_TIMING2_2, mc_arb_dram_timing2);
WREG32(MC_ARB_DRAM_TIMING2_2, dram_timing2);