diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index c0e35143a904634e06f3dca3cce8b23aebc1ed0c..0292ec560562f1b32a602b5db8c7011c98eac945 100644
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -1919,6 +1919,13 @@ static int tmac_init(struct rtw89_dev *rtwdev, u8 mac_idx)
 	reg = rtw89_mac_reg_by_idx(R_AX_MAC_LOOPBACK, mac_idx);
 	rtw89_write32_clr(rtwdev, reg, B_AX_MACLBK_EN);
 
+	reg = rtw89_mac_reg_by_idx(R_AX_TCR0, mac_idx);
+	rtw89_write32_mask(rtwdev, reg, B_AX_TCR_UDF_THSD_MASK, TCR_UDF_THSD);
+
+	reg = rtw89_mac_reg_by_idx(R_AX_TXD_FIFO_CTRL, mac_idx);
+	rtw89_write32_mask(rtwdev, reg, B_AX_TXDFIFO_HIGH_MCS_THRE_MASK, TXDFIFO_HIGH_MCS_THRE);
+	rtw89_write32_mask(rtwdev, reg, B_AX_TXDFIFO_LOW_MCS_THRE_MASK, TXDFIFO_LOW_MCS_THRE);
+
 	return 0;
 }
 
diff --git a/drivers/net/wireless/realtek/rtw89/reg.h b/drivers/net/wireless/realtek/rtw89/reg.h
index aca9fc3ac09ed893bb9a4f3aaeadc621f60f9c6a..3822cf0daef0a9581de1b55cd025b9e75086e698 100644
--- a/drivers/net/wireless/realtek/rtw89/reg.h
+++ b/drivers/net/wireless/realtek/rtw89/reg.h
@@ -1351,6 +1351,24 @@
 #define R_AX_RXDMA_PKT_INFO_1 0xC818
 #define R_AX_RXDMA_PKT_INFO_2 0xC81C
 
+#define R_AX_TCR0 0xCA00
+#define R_AX_TCR0_C1 0xEA00
+#define B_AX_TCR_ZLD_NUM_MASK GENMASK(31, 24)
+#define B_AX_TCR_UDF_EN BIT(23)
+#define B_AX_TCR_UDF_THSD_MASK GENMASK(22, 16)
+#define TCR_UDF_THSD 0x6
+#define B_AX_TCR_ERRSTEN_MASK GENMASK(15, 10)
+#define B_AX_TCR_VHTSIGA1_TXPS BIT(9)
+#define B_AX_TCR_PLCP_ERRHDL_EN BIT(8)
+#define B_AX_TCR_PADSEL BIT(7)
+#define B_AX_TCR_MASK_SIGBCRC BIT(6)
+#define B_AX_TCR_SR_VAL15_ALLOW BIT(5)
+#define B_AX_TCR_EN_EOF BIT(4)
+#define B_AX_TCR_EN_SCRAM_INC BIT(3)
+#define B_AX_TCR_EN_20MST BIT(2)
+#define B_AX_TCR_CRC BIT(1)
+#define B_AX_TCR_DISGCLK BIT(0)
+
 #define R_AX_TCR1 0xCA04
 #define R_AX_TCR1_C1 0xEA04
 #define B_AX_TXDFIFO_THRESHOLD GENMASK(31, 28)
@@ -1374,6 +1392,17 @@
 #define R_AX_PPWRBIT_SETTING 0xCA0C
 #define R_AX_PPWRBIT_SETTING_C1 0xEA0C
 
+#define R_AX_TXD_FIFO_CTRL 0xCA1C
+#define R_AX_TXD_FIFO_CTRL_C1 0xEA1C
+#define B_AX_NON_LEGACY_PPDU_ZLD_USTIMER_MASK GENMASK(28, 24)
+#define B_AX_LEGACY_PPDU_ZLD_USTIMER_MASK GENMASK(20, 16)
+#define B_AX_TXDFIFO_HIGH_MCS_THRE_MASK GENMASK(15, 12)
+#define TXDFIFO_HIGH_MCS_THRE 0x7
+#define B_AX_TXDFIFO_LOW_MCS_THRE_MASK GENMASK(11, 8)
+#define TXDFIFO_LOW_MCS_THRE  0x7
+#define B_AX_HIGH_MCS_PHY_RATE_MASK GENMASK(7, 4)
+#define B_AX_BW_PHY_RATE_MASK GENMASK(1, 0)
+
 #define R_AX_MACTX_DBG_SEL_CNT 0xCA20
 #define R_AX_MACTX_DBG_SEL_CNT_C1 0xEA20
 #define B_AX_MACTX_MPDU_CNT GENMASK(31, 24)