PMCH
r8169_mod_reg8_cond(tp, PMCH, D3_NO_PLL_DOWN, true);
r8169_mod_reg8_cond(tp, PMCH, D3HOT_NO_PLL_DOWN, true);
r8169_mod_reg8_cond(tp, PMCH, D3COLD_NO_PLL_DOWN, !enable);