mmCG_SPLL_FUNC_CNTL
tmp = RREG32(mmCG_SPLL_FUNC_CNTL);
WREG32(mmCG_SPLL_FUNC_CNTL, tmp);
tmp = RREG32(mmCG_SPLL_FUNC_CNTL);
WREG32(mmCG_SPLL_FUNC_CNTL, tmp);
tmp = RREG32(mmCG_SPLL_FUNC_CNTL);
WREG32(mmCG_SPLL_FUNC_CNTL, tmp);
si_pi->clock_registers.cg_spll_func_cntl = RREG32(mmCG_SPLL_FUNC_CNTL);