Index: sys/dev/alc/if_alcreg.h
===================================================================
--- sys/dev/alc/if_alcreg.h	(revision 217553)
+++ sys/dev/alc/if_alcreg.h	(working copy)
@@ -109,7 +109,7 @@
 #define	PM_CFG_PCIE_RECV		0x00008000
 #define	PM_CFG_L1_ENTRY_TIMER_MASK	0x000F0000
 #define	PM_CFG_PM_REQ_TIMER_MASK	0x00F00000
-#define	PM_CFG_LCKDET_TIMER_MASK	0x3F000000
+#define	PM_CFG_LCKDET_TIMER_MASK	0x0F000000
 #define	PM_CFG_EN_BUFS_RX_L0S		0x10000000
 #define	PM_CFG_SA_DLY_ENB		0x20000000
 #define	PM_CFG_MAC_ASPM_CHK		0x40000000
@@ -120,8 +120,9 @@
 #define	PM_CFG_LCKDET_TIMER_SHIFT	24
 
 #define	PM_CFG_L0S_ENTRY_TIMER_DEFAULT	6
-#define	PM_CFG_L1_ENTRY_TIMER_DEFAULT	12
-#define	PM_CFG_PM_REQ_TIMER_DEFAULT	1
+#define	PM_CFG_L1_ENTRY_TIMER_DEFAULT	1
+#define	PM_CFG_LCKDET_TIMER_DEFAULT	12
+#define	PM_CFG_PM_REQ_TIMER_DEFAULT	12
 
 #define	ALC_LTSSM_ID_CFG		0x12FC
 #define	LTSSM_ID_WRO_ENB		0x00001000
@@ -724,6 +725,14 @@
 
 #define	ALC_TX_MIB_BASE			0x1760
 
+#define	ALC_CLK_GATING_CFG		0x1814
+#define	CLK_GATING_DMAW_ENB		0x0001
+#define	CLK_GATING_DMAR_ENB		0x0002
+#define	CLK_GATING_TXQ_ENB		0x0004
+#define	CLK_GATING_RXQ_ENB		0x0008
+#define	CLK_GATING_TXMAC_ENB		0x0010
+#define	CLK_GATING_RXMAC_ENB		0x0020
+
 #define	ALC_DEBUG_DATA0			0x1900
 
 #define	ALC_DEBUG_DATA1			0x1904
Index: sys/dev/alc/if_alc.c
===================================================================
--- sys/dev/alc/if_alc.c	(revision 217553)
+++ sys/dev/alc/if_alc.c	(working copy)
@@ -677,7 +677,7 @@
 	pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
 	pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
 	pmcfg |= PM_CFG_MAC_ASPM_CHK;
-	pmcfg |= PM_CFG_SERDES_ENB | PM_CFG_RBER_ENB;
+	pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
 	pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
 
 	if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
@@ -3148,6 +3148,9 @@
 	alc_init_cmb(sc);
 	alc_init_smb(sc);
 
+	/* Enable all clocks. */
+	CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
+
 	/* Reprogram the station address. */
 	bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
 	CSR_WRITE_4(sc, ALC_PAR0,