[PATCH 2/2] wifi: mt76: mt7915: fix missing CH144 support for mt7915 pre-calibration

[Ryder Lee]

Sync from MTK SDK. The current mt7915 pre-calibration data lacks CH144 at BW20
so we fallback to apply adjacent channel's data as an alternative.

Fixes: 495184ac91bb ("mt76: mt7915: add support for applying pre-calibration data")
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index da3ee9f91704..01f208fec73e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2990,6 +2990,8 @@ static int mt7915_dpd_freq_idx(struct mt7915_dev *dev, u16 freq, u8 bw)
 	if (is_mt7915(&dev->mt76)) {
 		freq_list = freq_list_v1;
 		n_freqs = ARRAY_SIZE(freq_list_v1);
+		/* NOTE: apply adjacent channel data for the missing ch144 */
+		freq = (freq == 5720) ? 5700: freq;
 	} else {
 		freq_list = freq_list_v2;
 		n_freqs = ARRAY_SIZE(freq_list_v2);
-- 
2.39.0