Commit 20eb83c7 authored by Sean Wang's avatar Sean Wang Committed by Felix Fietkau
Browse files

mt76: mt7921: fix mt7921_wfsys_reset sequence 



WiFi subsytem reset should control MT_WFSYS_SW_RST_B and then poll the
same register until the bit WFSYS_SW_INIT_DONE bit is set.

Fixes: 0c1ce988 ("mt76: mt7921: add wifi reset support")
Reviewed-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 54c31b9e

drivers/net/wireless/mediatek/mt76/mt7921/dma.c

+3 −3
Original line number Diff line number Diff line
@@ -313,9 +313,9 @@ static int mt7921_dma_reset(struct mt7921_dev *dev, bool force) 


int mt7921_wfsys_reset(struct mt7921_dev *dev)

{

	mt76_set(dev, 0x70002600, BIT(0));

	msleep(200);

	mt76_clear(dev, 0x70002600, BIT(0));

	mt76_clear(dev, MT_WFSYS_SW_RST_B, WFSYS_SW_RST_B);

	msleep(50);

	mt76_set(dev, MT_WFSYS_SW_RST_B, WFSYS_SW_RST_B);



	if (!__mt76_poll_msec(&dev->mt76, MT_WFSYS_SW_RST_B,

			      WFSYS_SW_INIT_DONE, WFSYS_SW_INIT_DONE, 500))