diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
index 6ff9249eee90..8a53d8f286db 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -148,6 +148,7 @@ static u32 __mt7921_reg_addr(struct mt7921_dev *dev, u32 addr)
 		{ 0x820c8000, 0x0c000, 0x02000 }, /* WF_UMAC_TOP (PSE) */
 		{ 0x820cc000, 0x0e000, 0x01000 }, /* WF_UMAC_TOP (PP) */
 		{ 0x820cd000, 0x0f000, 0x01000 }, /* WF_MDP_TOP */
+		{ 0x74030000, 0x10000, 0x10000 }, /* PCIE_MAC_IREG */
 		{ 0x820ce000, 0x21c00, 0x00200 }, /* WF_LMAC_TOP (WF_SEC) */
 		{ 0x820cf000, 0x22000, 0x01000 }, /* WF_LMAC_TOP (WF_PF) */
 		{ 0x820e0000, 0x20000, 0x00400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
index 64568536c1e9..86340d3205c5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
@@ -54,6 +54,8 @@ int mt7921e_mcu_init(struct mt7921_dev *dev)
 	if (err)
 		return err;
 
+	mt76_rmw_field(dev, MT_PCIE_MAC_PM, MT_PCIE_MAC_PM_L0S_DIS, 1);
+
 	err = mt7921_run_firmware(dev);
 
 	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_FWDL], false);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/regs.h b/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
index ea643260ceb6..c65582acfa55 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
@@ -440,6 +440,8 @@
 #define MT_PCIE_MAC_BASE		0x10000
 #define MT_PCIE_MAC(ofs)		(MT_PCIE_MAC_BASE + (ofs))
 #define MT_PCIE_MAC_INT_ENABLE		MT_PCIE_MAC(0x188)
+#define MT_PCIE_MAC_PM			MT_PCIE_MAC(0x194)
+#define MT_PCIE_MAC_PM_L0S_DIS		BIT(8)
 
 #define MT_DMA_SHDL(ofs)		(0x7c026000 + (ofs))
 #define MT_DMASHDL_SW_CONTROL		MT_DMA_SHDL(0x004)