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mt76: mt7921: fix mt7921_wfsys_reset sequence

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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: 0c1ce98846 ("mt76: mt7921: add wifi reset support")
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Sean Wang
2021-05-10 23:14:49 +08:00
committed by Felix Fietkau
parent 54c31b9e65
commit 20eb83c749
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/mediatek/mt76/mt7921/dma.c
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@@ -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))