Some devices using MT7628 or MT7603 have only one antenna chain connected.
Detect these using the EEPROM rx/tx path settings
Reported-by: Qin Wei <me@xxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h | 3 +++
drivers/net/wireless/mediatek/mt76/mt7603/init.c | 12 ++++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
index b893facfba48..4687d6dc00dc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
@@ -85,4 +85,7 @@ enum mt7603_eeprom_source {
MT_EE_SRC_FLASH,
};
+#define MT_EE_NIC_CONF_0_RX_PATH GENMASK(3, 0)
+#define MT_EE_NIC_CONF_0_TX_PATH GENMASK(7, 4)
+
#endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/init.c b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
index 94196599797e..43dbabccc083 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/init.c
@@ -510,11 +510,17 @@ mt7603_init_txpower(struct mt7603_dev *dev,
}
}
+static inline bool is_mt7688(struct mt7603_dev *dev)
+{
+ return mt76_rr(dev, MT_EFUSE_BASE + 0x64) & BIT(4);
+}
+
int mt7603_register_device(struct mt7603_dev *dev)
{
struct mt76_bus_ops *bus_ops;
struct ieee80211_hw *hw = mt76_hw(dev);
struct wiphy *wiphy = hw->wiphy;
+ u8 *eeprom = (u8 *)dev->mt76.eeprom.data;
int ret;
dev->bus_ops = dev->mt76.bus;
@@ -536,9 +542,11 @@ int mt7603_register_device(struct mt7603_dev *dev)
tasklet_init(&dev->mt76.pre_tbtt_tasklet, mt7603_pre_tbtt_tasklet,
(unsigned long)dev);
- /* Check for 7688, which only has 1SS */
+ /* Check for 1SS devices */
dev->mphy.antenna_mask = 3;
- if (mt76_rr(dev, MT_EFUSE_BASE + 0x64) & BIT(4))
+ if (FIELD_GET(MT_EE_NIC_CONF_0_RX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 ||
+ FIELD_GET(MT_EE_NIC_CONF_0_TX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 ||
+ is_mt7688(dev))
dev->mphy.antenna_mask = 1;
dev->slottime = 9;
--
2.28.0
