mmATC_L2_CACHE_4K_EDC_CNT
WREG32_SOC15(GC, 0, mmATC_L2_CACHE_4K_EDC_CNT, 0);
data = RREG32_SOC15(GC, 0, mmATC_L2_CACHE_4K_EDC_CNT);
WREG32_SOC15(GC, 0, mmATC_L2_CACHE_4K_EDC_CNT, 0);
RREG32_SOC15(GC, 0, mmATC_L2_CACHE_4K_EDC_CNT);