mmCP_RB_WPTR_DELAY
WREG32_SOC15(GC, 0, mmCP_RB_WPTR_DELAY, 0);
WREG32(mmCP_RB_WPTR_DELAY, 0);
WREG32(mmCP_RB_WPTR_DELAY, 0);
WREG32(mmCP_RB_WPTR_DELAY, 0);
WREG32_SOC15(GC, 0, mmCP_RB_WPTR_DELAY, 0);