diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index 8c622111e832..99a42fc38e6a 100644
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -3414,6 +3414,11 @@ int rtw89_mac_enable_cpu(struct rtw89_dev *rtwdev, u8 boot_reason, bool dlfw)
 		val |= B_AX_WCPU_FWDL_EN;
 
 	rtw89_write32(rtwdev, R_AX_WCPU_FW_CTRL, val);
+
+	if (rtwdev->chip->chip_id == RTL8852B)
+		rtw89_write32_mask(rtwdev, R_AX_SEC_CTRL,
+				   B_AX_SEC_IDMEM_SIZE_CONFIG_MASK, 0x2);
+
 	rtw89_write16_mask(rtwdev, R_AX_BOOT_REASON, B_AX_BOOT_REASON_MASK,
 			   boot_reason);
 	rtw89_write32_set(rtwdev, R_AX_PLATFORM_ENABLE, B_AX_WCPU_EN);
diff --git a/drivers/net/wireless/realtek/rtw89/reg.h b/drivers/net/wireless/realtek/rtw89/reg.h
index 036953f0ec46..600257909df2 100644
--- a/drivers/net/wireless/realtek/rtw89/reg.h
+++ b/drivers/net/wireless/realtek/rtw89/reg.h
@@ -275,6 +275,9 @@
 #define B_AX_S1_LDO2PWRCUT_F BIT(23)
 #define B_AX_S0_LDO_VSEL_F_MASK GENMASK(22, 21)
 
+#define R_AX_SEC_CTRL 0x0C00
+#define B_AX_SEC_IDMEM_SIZE_CONFIG_MASK GENMASK(17, 16)
+
 #define R_AX_FILTER_MODEL_ADDR 0x0C04
 
 #define R_AX_HAXI_INIT_CFG1 0x1000