r8169: change the L0/L1 entrance latencies for RTL8106e

The original L0 and L1 entrance latencies of RTL8106e are 4us. And
they cause the delay of link-up interrupt when enabling ASPM. Change
the L0 entrance latency to 7us and L1 entrance latency to 32us. Then,
they could avoid the issue.

Tested-by: Koba Ko <koba.ko@canonical.com>
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 7316315..4d8e337 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -3502,6 +3502,9 @@ static void rtl_hw_start_8106(struct rtl8169_private *tp)
        RTL_W8(tp, MCU, RTL_R8(tp, MCU) | EN_NDP | EN_OOB_RESET);
        RTL_W8(tp, DLLPR, RTL_R8(tp, DLLPR) & ~PFM_EN);
 
+       /* The default value is 0x13. Change it to 0x2f */
+       rtl_csi_access_enable(tp, 0x2f);
+
        rtl_eri_write(tp, 0x1d0, ERIAR_MASK_0011, 0x0000);
 
        /* disable EEE */