[PATCH v4 0/9] wifi: mt76: mt7925: MT7927 (Filogic 380) support patches 1-9

[Javier Tia]

This series contains the first 9 patches for MediaTek MT7927 (Filogic 380)
combo WiFi 7 + BT 5.4 support in the mt7925 driver.

Patches 1-5 add generic 320MHz EHT support (no MT7927 references).
Patches 6-7 introduce MT7927 chip ID helpers and firmware paths.
Patch 8 adds per-chip IRQ map handling.
Patch 9 disables ASPM and runtime PM for MT7927.

The remaining MT7927-specific patches (DMA configuration, hardware
initialization, band_idx, CNM quirk, and PCI device ID enablement)
will be submitted separately by Sean Wang as part of a broader
refactoring effort to introduce a generic layer that both mt7925 and
mt7927 can share. This split was agreed upon during v3 review.

The DKMS out-of-tree package [1] continues to ship the full patch set
for working hardware support.

[1] https://github.com/jetm/mediatek-mt7927-dkms

Tested hardware:
- ASUS ROG Crosshair X870E Hero (BT 0489:e13a, WiFi 14c3:6639)
- ASUS ProArt X870E-Creator WiFi (BT 0489:e13a / 13d3:3588, WiFi 14c3:6639)
- ASUS ROG Strix X870-I (WiFi 14c3:7927)
- ASUS ROG Strix X870-F Gaming WiFi (BT 0489:e13a, WiFi 14c3:7927)
- ASUS ROG Strix X870E-E (BT 13d3:3588, WiFi 14c3:7927)
- ASUS ROG STRIX B850-E GAMING WIFI (BT 0489:e13a, WiFi 14c3:7927)
- Gigabyte X870E Aorus Master X3D (BT 0489:e10f, WiFi 14c3:7927)
- Gigabyte Z790 AORUS MASTER X (BT 0489:e10f, WiFi 14c3:7927)
- Gigabyte Z790 AORUS ELITE X WiFi7 (BT 0489:e10f, WiFi 14c3:7927)
- MSI MEG X870E ACE MAX (BT 0489:e110, WiFi 14c3:7927)
- Lenovo Legion Pro 7 16ARX9 (BT 0489:e0fa, WiFi 14c3:7927)
- Lenovo Legion Pro 7 16AFR10H (BT 0489:e0fa, WiFi 14c3:7927)
- TP-Link Archer TBE550E PCIe (BT 0489:e116, WiFi 14c3:7927)
- EDUP EP-MT7927BE M.2 card (WiFi 14c3:7927)
- Foxconn/Azurewave M.2 modules (WiFi 14c3:6639)
- AMD RZ738 reference design (WiFi 14c3:0738)

Tested on Arch Linux, CachyOS, EndeavourOS, Fedora (Bazzite), NixOS,
openSUSE Tumbleweed, and Ubuntu across kernels 6.13-6.19.

Changes since v3:
- Dropped patches 9-13 (DMA, HW init, band_idx, PCI IDs). Sean Wang
  will submit these as part of a generic layer refactor. The CNM quirk
  (v3 patch 13 feedback) will be folded into mt792x_get_mac80211_ops()
  as part of that work.
- Fixed is_320mhz_supported() to use mt76_chip() directly instead of
  is_mt7927() which was not yet defined at that point (patch 5).
- Trimmed verbose inline comments in ASPM/PM patch per review feedback.
  Detail kept in commit message (patch 9).
- Added tested hardware: ASUS ROG STRIX B850-E GAMING WIFI.

Changes since v2 (suggested by Sean Wang):
- Fixed is_320mhz_supported() to check for MT7927 only, not the
  entire mt7925 family. MT7925 does not support 320MHz (patch 5).
- Dropped phy_cap_info[7] 320MHz additions (NON_OFDMA_UL_MU_MIMO
  and MU_BEAMFORMER) to keep capabilities conservative (patch 5).
- Disabled runtime PM for MT7927 (patch 9). The combo chip shares a
  CONNINFRA power domain between WiFi and BT; SET_OWN/CLR_OWN
  transitions crash BT firmware. Discovered via user reports of BT
  lockups after enabling power_save=1 (Reported-by: Nitin Gurram).

Changes since v1 (suggested by Sean Wang):
- Reorganized from 18 patches into 13 across 8 logical groups
- Common 320MHz patches first, chip-specific changes later
- Introduced mt792x_dma_config struct to reuse mt7925_dma_init()
- Replaced is_mt7927() with is_320mhz_supported() in common patches

Link to v3: https://lore.kernel.org/linux-wireless/20260325-mt7927-wifi-support-v2-v3-0-826feb8fef8e@jetm.me/
Link to v2: https://lore.kernel.org/linux-wireless/20260319-mt7927-wifi-support-v2-v2-0-d627a7fad70d@jetm.me/
Link to v1: https://lore.kernel.org/linux-wireless/20260306-mt7927-wifi-support-v1-0-c77e7445511d@jetm.me/

Signed-off-by: Javier Tia <floss at jetm.me>
---
Javier Tia (9):
      wifi: mt76: mt7925: fix stale pointer comparisons in change_vif_links
      wifi: mt76: mt7925: add 320MHz bandwidth to bss_rlm_tlv
      wifi: mt76: mt7925: handle 320MHz bandwidth in RXV and TXS
      wifi: mt76: mt7925: populate EHT 320MHz MCS map in sta_rec
      wifi: mt76: mt7925: advertise EHT 320MHz capabilities for 6GHz band
      wifi: mt76: mt7925: add MT7927 chip ID helpers
      wifi: mt76: mt7925: add MT7927 firmware paths
      wifi: mt76: mt7925: use irq_map for chip-specific interrupt handling
      wifi: mt76: mt7925: disable ASPM and runtime PM for MT7927

 drivers/net/wireless/mediatek/mt76/mt76_connac.h   | 13 ++++++++++-
 drivers/net/wireless/mediatek/mt76/mt7925/init.c   |  3 ++-
 drivers/net/wireless/mediatek/mt76/mt7925/mac.c    |  9 ++++++++
 drivers/net/wireless/mediatek/mt76/mt7925/main.c   | 26 ++++++++++++++++++---
 drivers/net/wireless/mediatek/mt76/mt7925/mcu.c    |  5 ++++
 drivers/net/wireless/mediatek/mt76/mt7925/pci.c    | 27 +++++++++++++++++++---
 .../net/wireless/mediatek/mt76/mt7925/pci_mac.c    |  5 +++-
 drivers/net/wireless/mediatek/mt76/mt792x.h        |  6 +++++
 drivers/net/wireless/mediatek/mt76/mt792x_regs.h   |  3 +++
 9 files changed, 88 insertions(+), 9 deletions(-)
---
base-commit: 9ac76f3d0bb2940db3a9684d596b9c8f301ef315
change-id: 20260326-mt7927-wifi-support-v4-5fe574b710c6

Best regards,
--  
Javier Tia <floss at jetm.me>