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mt76: mt7915: fix unexpected firmware mode

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Avoid firmware falling into spectrum mode since that will set
unexpected PSE/PLE thresholds which lead to Tx hang.

This mode should be cleaned before firmware download stage.

Signed-off-by: Chih-Min Chen <chih-min.chen@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Chih-Min Chen
2020-09-04 13:51:02 +08:00
committed by Felix Fietkau
parent 9e47a683e9
commit d3c07a9e6d
2 changed files with 13 additions and 0 deletions
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6
drivers/net/wireless/mediatek/mt76/mt7915/init.c
View File

@@ -135,6 +135,12 @@ static int mt7915_init_hardware(struct mt7915_dev *dev)
set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
/*
* force firmware operation mode into normal state,
* which should be set before firmware download stage.
*/
mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
ret = mt7915_mcu_init(dev);
if (ret)
return ret;

7
drivers/net/wireless/mediatek/mt76/mt7915/regs.h
View File

@@ -360,6 +360,13 @@
#define MT_HIF_REMAP_L2_BASE GENMASK(31, 12)
#define MT_HIF_REMAP_BASE_L2 0x00000
#define MT_SWDEF_BASE 0x41f200
#define MT_SWDEF(ofs) (MT_SWDEF_BASE + (ofs))
#define MT_SWDEF_MODE MT_SWDEF(0x3c)
#define MT_SWDEF_NORMAL_MODE 0
#define MT_SWDEF_ICAP_MODE 1
#define MT_SWDEF_SPECTRUM_MODE 2
#define MT_TOP_BASE 0x18060000
#define MT_TOP(ofs) (MT_TOP_BASE + (ofs))