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r8169: enable ASPM on RTL8106E

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The Intel SoC was prevented from entering lower idle state because
of RTL8106E's ASPM was not enabled.

So enable ASPM on RTL8106E (chip version 39).
Now the Intel SoC can enter lower idle state, power consumption and
temperature are much lower.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kai-Heng Feng 2018-09-12 14:58:21 +08:00 committed by David S. Miller
parent 94235460f9
commit 0866cd1502
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/realtek/r8169.c
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@ -5627,6 +5627,8 @@ static void rtl_hw_start_8402(struct rtl8169_private *tp)
static void rtl_hw_start_8106(struct rtl8169_private *tp)
{
rtl_hw_aspm_clkreq_enable(tp, false);
/* Force LAN exit from ASPM if Rx/Tx are not idle */
RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) | 0x002800);
@ -5635,6 +5637,7 @@ static void rtl_hw_start_8106(struct rtl8169_private *tp)
RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
rtl_pcie_state_l2l3_enable(tp, false);
rtl_hw_aspm_clkreq_enable(tp, true);
}
static void rtl_hw_start_8101(struct rtl8169_private *tp)