diff --git a/hal/wifi3.0/hal_srng.c b/hal/wifi3.0/hal_srng.c
index 79872d2f1b..ef79f33028 100644
--- a/hal/wifi3.0/hal_srng.c
+++ b/hal/wifi3.0/hal_srng.c
@@ -1277,6 +1277,44 @@ void hal_delayed_reg_write(struct hal_soc *hal_soc,
 
 #else
 #ifdef FEATURE_HAL_DELAYED_REG_WRITE
+#ifdef QCA_WIFI_QCA6750
+void hal_delayed_reg_write(struct hal_soc *hal_soc,
+			   struct hal_srng *srng,
+			   void __iomem *addr,
+			   uint32_t value)
+{
+	switch (srng->ring_type) {
+	case CE_SRC:
+	case CE_DST:
+	case CE_DST_STATUS:
+		if (hif_get_ep_vote_access(hal_soc->hif_handle,
+					   HIF_EP_VOTE_NONDP_ACCESS) ==
+					   HIF_EP_VOTE_ACCESS_DISABLE) {
+			hal_write_address_32_mb(hal_soc, addr, value, false);
+			qdf_atomic_inc(&hal_soc->stats.wstats.direct);
+			srng->wstats.direct++;
+		} else {
+			hal_reg_write_enqueue(hal_soc, srng, addr, value);
+		}
+		break;
+	default:
+		if (hif_get_ep_vote_access(hal_soc->hif_handle,
+		    HIF_EP_VOTE_DP_ACCESS) ==
+		    HIF_EP_VOTE_ACCESS_DISABLE ||
+		    hal_is_reg_write_tput_level_high(hal_soc) ||
+		    PLD_MHI_STATE_L0 ==
+		    pld_get_mhi_state(hal_soc->qdf_dev->dev)) {
+			hal_write_address_32_mb(hal_soc, addr, value, false);
+			qdf_atomic_inc(&hal_soc->stats.wstats.direct);
+			srng->wstats.direct++;
+		} else {
+			hal_reg_write_enqueue(hal_soc, srng, addr, value);
+		}
+
+		break;
+	}
+}
+#else
 void hal_delayed_reg_write(struct hal_soc *hal_soc,
 			   struct hal_srng *srng,
 			   void __iomem *addr,
@@ -1293,6 +1331,7 @@ void hal_delayed_reg_write(struct hal_soc *hal_soc,
 }
 #endif
 #endif
+#endif
 
 /**
  * hal_attach - Initialize HAL layer
diff --git a/hif/src/ipcie/if_ipci.c b/hif/src/ipcie/if_ipci.c
index dfc12f6346..3c557eb788 100644
--- a/hif/src/ipcie/if_ipci.c
+++ b/hif/src/ipcie/if_ipci.c
@@ -878,11 +878,54 @@ void hif_print_ipci_stats(struct hif_ipci_softc *ipci_handle)
 #ifdef FEATURE_HAL_DELAYED_REG_WRITE
 int hif_prevent_link_low_power_states(struct hif_opaque_softc *hif)
 {
+	struct hif_softc *scn = HIF_GET_SOFTC(hif);
+	struct hif_ipci_softc *ipci_scn = HIF_GET_IPCI_SOFTC(scn);
+	uint32_t timeout = 0;
+
+	while (pld_is_pci_ep_awake(scn->qdf_dev->dev) &&
+	       timeout <= EP_WAKE_RESET_DELAY_TIMEOUT_US) {
+		qdf_sleep_us(EP_WAKE_RESET_DELAY_US);
+		timeout += EP_WAKE_RESET_DELAY_US;
+	}
+
+	if (pld_is_pci_ep_awake(scn->qdf_dev->dev)) {
+		hif_err_rl(" EP state reset is not done to prevent l1");
+		ipci_scn->ep_awake_reset_fail++;
+		return 0;
+	}
+
+	if (pld_prevent_l1(scn->qdf_dev->dev)) {
+		hif_err_rl("pld prevent l1 failed");
+		ipci_scn->prevent_l1_fail++;
+		return 0;
+	}
+
+	ipci_scn->prevent_l1 = true;
+	timeout = 0;
+	while (!pld_is_pci_ep_awake(scn->qdf_dev->dev) &&
+	       timeout <= EP_WAKE_DELAY_TIMEOUT_US) {
+		qdf_sleep_us(EP_WAKE_DELAY_US);
+		timeout += EP_WAKE_DELAY_US;
+	}
+
+	if (pld_is_pci_ep_awake(scn->qdf_dev->dev) <= 0) {
+		hif_err_rl("Unable to wakeup pci ep");
+		ipci_scn->ep_awake_set_fail++;
+		return  0;
+	}
+
 	return 0;
 }
 
 void hif_allow_link_low_power_states(struct hif_opaque_softc *hif)
 {
+	struct hif_softc *scn = HIF_GET_SOFTC(hif);
+	struct hif_ipci_softc *ipci_scn = HIF_GET_IPCI_SOFTC(scn);
+
+	if (qdf_likely(ipci_scn->prevent_l1)) {
+		pld_allow_l1(scn->qdf_dev->dev);
+		ipci_scn->prevent_l1 = false;
+	}
 }
 #endif
 
diff --git a/hif/src/ipcie/if_ipci.h b/hif/src/ipcie/if_ipci.h
index 7779eaf3dd..afbd9a1646 100644
--- a/hif/src/ipcie/if_ipci.h
+++ b/hif/src/ipcie/if_ipci.h
@@ -66,6 +66,18 @@ struct hif_ipci_stats {
 #define FORCE_WAKE_DELAY_MS 5
 #endif /* FORCE_WAKE */
 
+#ifdef FEATURE_HAL_DELAYED_REG_WRITE
+#ifdef HAL_CONFIG_SLUB_DEBUG_ON
+#define EP_WAKE_RESET_DELAY_TIMEOUT_US 3000
+#define EP_WAKE_DELAY_TIMEOUT_US 7000
+#else
+#define EP_WAKE_RESET_DELAY_TIMEOUT_US 10000
+#define EP_WAKE_DELAY_TIMEOUT_US 10000
+#endif
+#define EP_WAKE_RESET_DELAY_US 50
+#define EP_WAKE_DELAY_US 200
+#endif
+
 struct hif_ipci_softc {
 	struct HIF_CE_state ce_sc;
 	void __iomem *mem;      /* PCI address. */
@@ -83,6 +95,12 @@ struct hif_ipci_softc {
 
 	void (*hif_ipci_get_soc_info)(struct hif_ipci_softc *sc,
 				      struct device *dev);
+#ifdef FEATURE_HAL_DELAYED_REG_WRITE
+	uint32_t ep_awake_reset_fail;
+	uint32_t prevent_l1_fail;
+	uint32_t ep_awake_set_fail;
+	bool prevent_l1;
+#endif
 #ifdef FORCE_WAKE
 	struct hif_ipci_stats stats;
 #endif