[PATCH v5 20/21] wifi: mt76: mt7925: add MT7927 PCIe support

Sean Wang
2026-04-25T19:52:00Z

Add the missing MT7927 device support in the mt7925 PCI path.
This ensures MT7927 is identified correctly and uses the proper
initialization flow.

Co-developed-by: Javier Tia <floss@jetm.me>
Signed-off-by: Javier Tia <floss@jetm.me>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
index 7455cf7eddc5..41e6ec9223e9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c
@@ -16,6 +16,12 @@ static const struct pci_device_id mt7925_pci_device_table[] = {
.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0717),
.driver_data = (kernel_ulong_t)MT7925_FIRMWARE_WM },
+ { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7927),
+ .driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
+ { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x6639),
+ .driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
+ { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0738),
+ .driver_data = (kernel_ulong_t)MT7927_FIRMWARE_WM },
{ },
};

@@ -376,7 +382,8 @@ static int mt7925_pci_probe(struct pci_dev *pdev,
if (ret)
goto err_free_pci_vec;

- is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927);
+ is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927 ||
+ pdev->device == 0x0738);

/* MT7927: ASPM L1 causes unreliable WFDMA register access */
if (mt7925_disable_aspm || is_mt7927_hw)
@@ -436,6 +443,13 @@ static int mt7925_pci_probe(struct pci_dev *pdev,

dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev);

+ if (is_mt7927_hw && mt76_chip(mdev) != 0x7927) {
+ dev_info(mdev->dev,
+ "MT7927 raw CHIPID=0x%04x, forcing chip=0x7927\n",
+ mt76_chip(mdev));
+ mdev->rev = (0x7927 << 16) | (mdev->rev & 0xff);
+ }
+
mt76_rmw_field(dev, MT_HW_EMI_CTL, MT_HW_EMI_CTL_SLPPROT_EN, 1);

ret = mt792x_wfsys_reset(dev);
--
2.43.0