[PATCH 5/6] wifi: mt76: mt792x: enable USB UDMA TX timeout

[Sean Wang]

From: Sean Wang <sean.wang at mediatek.com>

Configure the USB UDMA TX timeout limit and enable timeout detection
during DMA initialization, matching the vendor driver setup. Use a
longer timeout to avoid false alarms.

Signed-off-by: Sean Wang <sean.wang at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt792x_usb.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_usb.c b/drivers/net/wireless/mediatek/mt76/mt792x_usb.c
index 43191a8a9ea4..c4da1b900d47 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_usb.c
@@ -11,6 +11,7 @@
 #include "mt792x.h"
 #include "mt76_connac2_mac.h"
 
+#define MT792X_USB_TX_TIMEOUT_LIMIT	50000
 #define MT792X_USB_UDMA_IDLE_TIMEOUT	1000
 
 static int mt792xu_read32(struct mt76_dev *dev, u32 addr, void *buf)
@@ -396,6 +397,10 @@ int mt792xu_dma_init(struct mt792x_dev *dev, bool resume)
 	mt76_set(dev, MT_UDMA_WLCFG_0,
 		 MT_WL_RX_EN | MT_WL_TX_EN |
 		 MT_WL_RX_MPSZ_PAD0 | MT_TICK_1US_EN);
+	mt76_rmw(dev, MT_UDMA_WLCFG_1, MT_WL_TX_TMOUT_LMT,
+		 FIELD_PREP(MT_WL_TX_TMOUT_LMT,
+			    MT792X_USB_TX_TIMEOUT_LIMIT));
+	mt76_set(dev, MT_UDMA_WLCFG_0, MT_WL_TX_TMOUT_FUNC_EN);
 	mt76_clear(dev, MT_UDMA_WLCFG_0,
 		   MT_WL_RX_AGG_TO | MT_WL_RX_AGG_LMT);
 	mt76_clear(dev, MT_UDMA_WLCFG_1, MT_WL_RX_AGG_PKT_LMT);
-- 
2.43.0