USB MediaTek MT7921AU DFS channels scan fail

[Gingernut1978]

Not able to use DFS channels on a USB MediaTek MT7921AU 802.11ac/ax/b/g/n dongle in AP mode. Non DFS channels work correctly.

This is using OpenWrt SNAPSHOT r24154+5-6f31941d38 on x86/64

Sun Oct 22 19:17:36 2023 daemon.notice netifd: Wireless device 'radio0' is now up
Sun Oct 22 19:17:36 2023 daemon.notice hostapd: phy0-ap0: interface state HT_SCAN->DFS
Sun Oct 22 19:17:36 2023 daemon.notice hostapd: phy0-ap0: DFS-CAC-START freq=5700 chan=140 sec_chan=1, width=1, seg0=138, seg1=0, cac_time=60s
Sun Oct 22 19:17:36 2023 daemon.err hostapd: DFS start_dfs_cac() failed, -1
Sun Oct 22 19:17:36 2023 daemon.err hostapd: Interface initialization failed
Sun Oct 22 19:17:36 2023 daemon.notice hostapd: phy0-ap0: interface state DFS->DISABLED
Sun Oct 22 19:17:36 2023 daemon.notice hostapd: phy0-ap0: AP-DISABLED

config wifi-device 'radio0'
    option type 'mac80211'
    option path 'pci0000:00/0000:00:14.0/usb2/2-1/2-1:1.0'
    option channel '140'
    option band '5g'
    option htmode 'HE80'
    option country 'ES'
    option cell_density '0'

config wifi-iface 'wifinet0'
    option device 'radio0'
    option mode 'ap'
    option ssid 'OpenWrt'
    option encryption 'psk2'
    option key 'wiphykey'
    option network 'lan'

[    6.889781] mt7921u 2-1:1.0: HW/SW Version: 0x8a108a10, Build Time: 20230526130917a
[    6.901516] mt7921u 2-1:1.0: WM Firmware Version: ____010000, Build Time: 20230526130958

phy0-ap0  ESSID: "OpenWrt"
          Access Point: 90:DE:80:D6:96:FD
          Mode: Master  Channel: 140 (6.650 GHz)  HT Mode: NOHT
          Center Channel 1: unknown 2: unknown
          Tx-Power: 3 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: WPA2 PSK (CCMP)
          Type: nl80211  HW Mode(s): 802.11ac/ax/b/g/n
          Hardware: USB 0E8D:7961 [MediaTek MT7921AU]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: no  PHY name: phy0

phy0-ap0  ESSID: "OpenWrt"
          Access Point: 90:DE:80:D6:96:FD
          Mode: Master  Channel: 140 (6.650 GHz)  HT Mode: NOHT
          Center Channel 1: unknown 2: unknown
          Tx-Power: 3 dBm  Link Quality: unknown/70
          Signal: unknown  Noise: unknown
          Bit Rate: unknown
          Encryption: WPA2 PSK (CCMP)
          Type: nl80211  HW Mode(s): 802.11ac/ax/b/g/n
          Hardware: USB 0E8D:7961 [MediaTek MT7921AU]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: no  PHY name: phy0`

`Wiphy phy0
    wiphy index: 0
    max # scan SSIDs: 4
    max scan IEs length: 482 bytes
    max # sched scan SSIDs: 10
    max # match sets: 16
    Retry short limit: 7
    Retry long limit: 4
    Coverage class: 0 (up to 0m)
    Device supports AP-side u-APSD.
    Device supports T-DLS.
    Supported Ciphers:
        * WEP40 (00-0f-ac:1)
        * WEP104 (00-0f-ac:5)
        * TKIP (00-0f-ac:2)
        * CCMP-128 (00-0f-ac:4)
        * CCMP-256 (00-0f-ac:10)
        * GCMP-128 (00-0f-ac:8)
        * GCMP-256 (00-0f-ac:9)
        * CMAC (00-0f-ac:6)
        * CMAC-256 (00-0f-ac:13)
        * GMAC-128 (00-0f-ac:11)
        * GMAC-256 (00-0f-ac:12)
    Available Antennas: TX 0x3 RX 0x3
    Configured Antennas: TX 0x3 RX 0x3
    Supported interface modes:
         * managed
         * AP
         * AP/VLAN
         * monitor
         * P2P-client
         * P2P-GO
    Band 1:
        Capabilities: 0x9ff
            RX LDPC
            HT20/HT40
            SM Power Save disabled
            RX Greenfield
            RX HT20 SGI
            RX HT40 SGI
            TX STBC
            RX STBC 1-stream
            Max AMSDU length: 7935 bytes
            No DSSS/CCK HT40
        Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
        Minimum RX AMPDU time spacing: No restriction (0x00)
        HT TX/RX MCS rate indexes supported: 0-15
        HE Iftypes: managed
            HE MAC Capabilities (0x08011a000040):
                +HTC HE Supported
                Trigger Frame MAC Padding Duration: 2
                OM Control
                Maximum A-MPDU Length Exponent: 3
                A-MSDU in A-MPDU
            HE PHY Capabilities: (0x2270ce120dc0b306423f00):
                HE40/2.4GHz
                242 tone RUs/2.4GHz
                Device Class: 1
                LDPC Coding in Payload
                HE SU PPDU with 1x HE-LTF and 0.8us GI
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                SU Beamformee
                Beamformee STS <= 80Mhz: 3
                Ng = 16 SU Feedback
                Ng = 16 MU Feedback
                Codebook Size SU Feedback
                Codebook Size MU Feedback
                Triggered CQI Feedback
                Partial Bandwidth Extended Range
                PPE Threshold Present
                Power Boost Factor ar
                HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
                20MHz in 40MHz HE PPDU 2.4GHz
                DCM Max BW: 1
                Longer Than 16HE SIG-B OFDM Symbols
                Non-Triggered CQI Feedback
                TX 1024-QAM
                RX 1024-QAM
                RX Full BW SU Using HE MU PPDU with Compression SIGB
                RX Full BW SU Using HE MU PPDU with Non-Compression SIGB
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: managed
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw=20 MHz, max NSS for MCS 0-7: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        HE Iftypes: AP
            HE MAC Capabilities (0x00011a081044):
                +HTC HE Supported
                BSR
                OM Control
                Maximum A-MPDU Length Exponent: 3
                BQR
                A-MSDU in A-MPDU
                OM Control UL MU Data Disable RX
            HE PHY Capabilities: (0x0220ce120000a000000c00):
                HE40/2.4GHz
                LDPC Coding in Payload
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                Partial Bandwidth Extended Range
                PPE Threshold Present
                TX 1024-QAM
                RX 1024-QAM
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: AP
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw=20 MHz, max NSS for MCS 0-7: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw=20 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        Bitrates (non-HT):
            * 1.0 Mbps (short preamble supported)
            * 2.0 Mbps (short preamble supported)
            * 5.5 Mbps (short preamble supported)
            * 11.0 Mbps (short preamble supported)
            * 6.0 Mbps
            * 9.0 Mbps
            * 12.0 Mbps
            * 18.0 Mbps
            * 24.0 Mbps
            * 36.0 Mbps
            * 48.0 Mbps
            * 54.0 Mbps
        Frequencies:
            * 2412 MHz [1] (20.0 dBm)
            * 2417 MHz [2] (20.0 dBm)
            * 2422 MHz [3] (20.0 dBm)
            * 2427 MHz [4] (20.0 dBm)
            * 2432 MHz [5] (20.0 dBm)
            * 2437 MHz [6] (20.0 dBm)
            * 2442 MHz [7] (20.0 dBm)
            * 2447 MHz [8] (20.0 dBm)
            * 2452 MHz [9] (20.0 dBm)
            * 2457 MHz [10] (20.0 dBm)
            * 2462 MHz [11] (20.0 dBm)
            * 2467 MHz [12] (20.0 dBm)
            * 2472 MHz [13] (20.0 dBm)
            * 2484 MHz [14] (disabled)
    Band 2:
        Capabilities: 0x9ff
            RX LDPC
            HT20/HT40
            SM Power Save disabled
            RX Greenfield
            RX HT20 SGI
            RX HT40 SGI
            TX STBC
            RX STBC 1-stream
            Max AMSDU length: 7935 bytes
            No DSSS/CCK HT40
        Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
        Minimum RX AMPDU time spacing: No restriction (0x00)
        HT TX/RX MCS rate indexes supported: 0-15
        VHT Capabilities (0x339071b2):
            Max MPDU length: 11454
            Supported Channel Width: neither 160 nor 80+80
            RX LDPC
            short GI (80 MHz)
            TX STBC
            SU Beamformee
            MU Beamformee
            RX antenna pattern consistency
            TX antenna pattern consistency
        VHT RX MCS set:
            1 streams: MCS 0-9
            2 streams: MCS 0-9
            3 streams: not supported
            4 streams: not supported
            5 streams: not supported
            6 streams: not supported
            7 streams: not supported
            8 streams: not supported
        VHT RX highest supported: 0 Mbps
        VHT TX MCS set:
            1 streams: MCS 0-9
            2 streams: MCS 0-9
            3 streams: not supported
            4 streams: not supported
            5 streams: not supported
            6 streams: not supported
            7 streams: not supported
            8 streams: not supported
        VHT TX highest supported: 0 Mbps
        VHT extended NSS: supported
        HE Iftypes: managed
            HE MAC Capabilities (0x08011a000040):
                +HTC HE Supported
                Trigger Frame MAC Padding Duration: 2
                OM Control
                Maximum A-MPDU Length Exponent: 3
                A-MSDU in A-MPDU
            HE PHY Capabilities: (0x4470ce120dc0b306423f00):
                HE40/HE80/5GHz
                242 tone RUs/5GHz
                Device Class: 1
                LDPC Coding in Payload
                HE SU PPDU with 1x HE-LTF and 0.8us GI
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                SU Beamformee
                Beamformee STS <= 80Mhz: 3
                Ng = 16 SU Feedback
                Ng = 16 MU Feedback
                Codebook Size SU Feedback
                Codebook Size MU Feedback
                Triggered CQI Feedback
                Partial Bandwidth Extended Range
                PPE Threshold Present
                Power Boost Factor ar
                HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
                20MHz in 40MHz HE PPDU 2.4GHz
                DCM Max BW: 1
                Longer Than 16HE SIG-B OFDM Symbols
                Non-Triggered CQI Feedback
                TX 1024-QAM
                RX 1024-QAM
                RX Full BW SU Using HE MU PPDU with Compression SIGB
                RX Full BW SU Using HE MU PPDU with Non-Compression SIGB
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: managed
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        HE Iftypes: AP
            HE MAC Capabilities (0x00011a081044):
                +HTC HE Supported
                BSR
                OM Control
                Maximum A-MPDU Length Exponent: 3
                BQR
                A-MSDU in A-MPDU
                OM Control UL MU Data Disable RX
            HE PHY Capabilities: (0x0420ce120000a000000c00):
                HE40/HE80/5GHz
                LDPC Coding in Payload
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                Partial Bandwidth Extended Range
                PPE Threshold Present
                TX 1024-QAM
                RX 1024-QAM
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: AP
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        Bitrates (non-HT):
            * 6.0 Mbps
            * 9.0 Mbps
            * 12.0 Mbps
            * 18.0 Mbps
            * 24.0 Mbps
            * 36.0 Mbps
            * 48.0 Mbps
            * 54.0 Mbps
        Frequencies:
            * 5180 MHz [36] (23.0 dBm)
            * 5200 MHz [40] (23.0 dBm)
            * 5220 MHz [44] (23.0 dBm)
            * 5240 MHz [48] (23.0 dBm)
            * 5260 MHz [52] (20.0 dBm) (radar detection)
            * 5280 MHz [56] (20.0 dBm) (radar detection)
            * 5300 MHz [60] (20.0 dBm) (radar detection)
            * 5320 MHz [64] (20.0 dBm) (radar detection)
            * 5500 MHz [100] (26.0 dBm) (radar detection)
            * 5520 MHz [104] (26.0 dBm) (radar detection)
            * 5540 MHz [108] (26.0 dBm) (radar detection)
            * 5560 MHz [112] (26.0 dBm) (radar detection)
            * 5580 MHz [116] (26.0 dBm) (radar detection)
            * 5600 MHz [120] (26.0 dBm) (radar detection)
            * 5620 MHz [124] (26.0 dBm) (radar detection)
            * 5640 MHz [128] (26.0 dBm) (radar detection)
            * 5660 MHz [132] (26.0 dBm) (radar detection)
            * 5680 MHz [136] (26.0 dBm) (radar detection)
            * 5700 MHz [140] (26.0 dBm) (radar detection)
            * 5720 MHz [144] (13.0 dBm) (radar detection)
            * 5745 MHz [149] (13.0 dBm)
            * 5765 MHz [153] (13.0 dBm)
            * 5785 MHz [157] (13.0 dBm)
            * 5805 MHz [161] (13.0 dBm)
            * 5825 MHz [165] (13.0 dBm)
            * 5845 MHz [169] (13.0 dBm)
            * 5865 MHz [173] (13.0 dBm)
            * 5885 MHz [177] (disabled)
    Band 4:
        HE Iftypes: managed
            HE MAC Capabilities (0x08011a000040):
                +HTC HE Supported
                Trigger Frame MAC Padding Duration: 2
                OM Control
                Maximum A-MPDU Length Exponent: 3
                A-MSDU in A-MPDU
            HE PHY Capabilities: (0x4470ce120dc0b306423f00):
                HE40/HE80/5GHz
                242 tone RUs/5GHz
                Device Class: 1
                LDPC Coding in Payload
                HE SU PPDU with 1x HE-LTF and 0.8us GI
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                SU Beamformee
                Beamformee STS <= 80Mhz: 3
                Ng = 16 SU Feedback
                Ng = 16 MU Feedback
                Codebook Size SU Feedback
                Codebook Size MU Feedback
                Triggered CQI Feedback
                Partial Bandwidth Extended Range
                PPE Threshold Present
                Power Boost Factor ar
                HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
                20MHz in 40MHz HE PPDU 2.4GHz
                DCM Max BW: 1
                Longer Than 16HE SIG-B OFDM Symbols
                Non-Triggered CQI Feedback
                TX 1024-QAM
                RX 1024-QAM
                RX Full BW SU Using HE MU PPDU with Compression SIGB
                RX Full BW SU Using HE MU PPDU with Non-Compression SIGB
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: managed
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        HE Iftypes: AP
            HE MAC Capabilities (0x00011a081044):
                +HTC HE Supported
                BSR
                OM Control
                Maximum A-MPDU Length Exponent: 3
                BQR
                A-MSDU in A-MPDU
                OM Control UL MU Data Disable RX
            HE PHY Capabilities: (0x0420ce120000a000000c00):
                HE40/HE80/5GHz
                LDPC Coding in Payload
                NDP with 4x HE-LTF and 3.2us GI
                STBC Tx <= 80MHz
                STBC Rx <= 80MHz
                Full Bandwidth UL MU-MIMO
                Partial Bandwidth UL MU-MIMO
                DCM Max Constellation: 2
                DCM Max Constellation Rx: 2
                Partial Bandwidth Extended Range
                PPE Threshold Present
                TX 1024-QAM
                RX 1024-QAM
            HE RX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            HE TX MCS and NSS set <= 80 MHz
                1 streams: MCS 0-11
                2 streams: MCS 0-11
                3 streams: not supported
                4 streams: not supported
                5 streams: not supported
                6 streams: not supported
                7 streams: not supported
                8 streams: not supported
            PPE Threshold 0x39 0x1c 0xc7 0x71 0x1c 0x07 
        EHT Iftypes: AP
            EHT MAC Capabilities (0x0000):
            EHT PHY Capabilities: (0x0000000000000000):
            EHT MCS/NSS: (0x):
            EHT bw <= 80 MHz, max NSS for MCS 8-9: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 10-11: Rx=0, Tx=0
            EHT bw <= 80 MHz, max NSS for MCS 12-13: Rx=0, Tx=0
        Bitrates (non-HT):
            * 6.0 Mbps
            * 9.0 Mbps
            * 12.0 Mbps
            * 18.0 Mbps
            * 24.0 Mbps
            * 36.0 Mbps
            * 48.0 Mbps
            * 54.0 Mbps
        Frequencies:
            * 5955 MHz [1] (23.0 dBm)
            * 5975 MHz [5] (23.0 dBm)
            * 5995 MHz [9] (23.0 dBm)
            * 6015 MHz [13] (23.0 dBm)
            * 6035 MHz [17] (23.0 dBm)
            * 6055 MHz [21] (23.0 dBm)
            * 6075 MHz [25] (23.0 dBm)
            * 6095 MHz [29] (23.0 dBm)
            * 6115 MHz [33] (23.0 dBm)
            * 6135 MHz [37] (23.0 dBm)
            * 6155 MHz [41] (23.0 dBm)
            * 6175 MHz [45] (23.0 dBm)
            * 6195 MHz [49] (23.0 dBm)
            * 6215 MHz [53] (23.0 dBm)
            * 6235 MHz [57] (23.0 dBm)
            * 6255 MHz [61] (23.0 dBm)
            * 6275 MHz [65] (23.0 dBm)
            * 6295 MHz [69] (23.0 dBm)
            * 6315 MHz [73] (23.0 dBm)
            * 6335 MHz [77] (23.0 dBm)
            * 6355 MHz [81] (23.0 dBm)
            * 6375 MHz [85] (23.0 dBm)
            * 6395 MHz [89] (23.0 dBm)
            * 6415 MHz [93] (23.0 dBm)
            * 6435 MHz [97] (disabled)
            * 6455 MHz [101] (disabled)
            * 6475 MHz [105] (disabled)
            * 6495 MHz [109] (disabled)
            * 6515 MHz [113] (disabled)
            * 6535 MHz [117] (disabled)
            * 6555 MHz [121] (disabled)
            * 6575 MHz [125] (disabled)
            * 6595 MHz [129] (disabled)
            * 6615 MHz [133] (disabled)
            * 6635 MHz [137] (disabled)
            * 6655 MHz [141] (disabled)
            * 6675 MHz [145] (disabled)
            * 6695 MHz [149] (disabled)
            * 6715 MHz [153] (disabled)
            * 6735 MHz [157] (disabled)
            * 6755 MHz [161] (disabled)
            * 6775 MHz [165] (disabled)
            * 6795 MHz [169] (disabled)
            * 6815 MHz [173] (disabled)
            * 6835 MHz [177] (disabled)
            * 6855 MHz [181] (disabled)
            * 6875 MHz [185] (disabled)
            * 6895 MHz [189] (disabled)
            * 6915 MHz [193] (disabled)
            * 6935 MHz [197] (disabled)
            * 6955 MHz [201] (disabled)
            * 6975 MHz [205] (disabled)
            * 6995 MHz [209] (disabled)
            * 7015 MHz [213] (disabled)
            * 7035 MHz [217] (disabled)
            * 7055 MHz [221] (disabled)
            * 7075 MHz [225] (disabled)
            * 7095 MHz [229] (disabled)
            * 7115 MHz [233] (disabled)
    Supported commands:
         * new_interface
         * set_interface
         * new_key
         * start_ap
         * new_station
         * new_mpath
         * set_mesh_config
         * set_bss
         * authenticate
         * associate
         * deauthenticate
         * disassociate
         * join_ibss
         * join_mesh
         * remain_on_channel
         * set_tx_bitrate_mask
         * frame
         * frame_wait_cancel
         * set_wiphy_netns
         * set_channel
         * tdls_mgmt
         * tdls_oper
         * start_sched_scan
         * probe_client
         * set_noack_map
         * register_beacons
         * start_p2p_device
         * set_mcast_rate
         * connect
         * disconnect
         * channel_switch
         * set_qos_map
         * set_multicast_to_unicast
         * set_sar_specs
    WoWLAN support:
         * wake up on disconnect
         * wake up on magic packet
         * wake up on pattern match, up to 1 patterns of 1-128 bytes,
           maximum packet offset 0 bytes
         * can do GTK rekeying
         * wake up on network detection, up to 10 match sets
    software interface modes (can always be added):
         * AP/VLAN
         * monitor
    valid interface combinations:
         * #{ managed, P2P-client } <= 2, #{ AP, P2P-GO } <= 1,
           total <= 2, #channels <= 2
    HT Capability overrides:
         * MCS: ff ff ff ff ff ff ff ff ff ff
         * maximum A-MSDU length
         * supported channel width
         * short GI for 40 MHz
         * max A-MPDU length exponent
         * min MPDU start spacing
    Device supports TX status socket option.
    Device supports HT-IBSS.
    Device supports SAE with AUTHENTICATE command
    Device supports scan flush.
    Device supports per-vif TX power setting
    Driver supports full state transitions for AP/GO clients
    Driver supports a userspace MPM
    Device supports active monitor (which will ACK incoming frames)
    Driver/device bandwidth changes during BSS lifetime (AP/GO mode)
    Device supports configuring vdev MAC-addr on create.
    Device supports randomizing MAC-addr in scans.
    Device supports randomizing MAC-addr in sched scans.
    max # scan plans: 1
    max scan plan interval: 65535
    max scan plan iterations: 0
    Supported TX frame types:
         * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
         * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
    Supported RX frame types:
         * IBSS: 0x40 0xb0 0xc0 0xd0
         * managed: 0x40 0xb0 0xd0
         * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
         * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
         * mesh point: 0xb0 0xc0 0xd0
         * P2P-client: 0x40 0xd0
         * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
         * P2P-device: 0x40 0xd0
    Supported extended features:
        * [ RRM ]: RRM
        * [ SET_SCAN_DWELL ]: scan dwell setting
        * [ BEACON_RATE_LEGACY ]: legacy beacon rate setting
        * [ BEACON_RATE_HT ]: HT beacon rate setting
        * [ BEACON_RATE_VHT ]: VHT beacon rate setting
        * [ FILS_STA ]: STA FILS (Fast Initial Link Setup)
        * [ CQM_RSSI_LIST ]: multiple CQM_RSSI_THOLD records
        * [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
        * [ ACK_SIGNAL_SUPPORT ]: ack signal level support
        * [ TXQS ]: FQ-CoDel-enabled intermediate TXQs
        * [ CAN_REPLACE_PTK0 ]: can safely replace PTK 0 when rekeying
        * [ AIRTIME_FAIRNESS ]: airtime fairness scheduling
        * [ AQL ]: Airtime Queue Limits (AQL)
        * [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
        * [ SCAN_FREQ_KHZ ]: scan on kHz frequency support
        * [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support
        * [ BEACON_RATE_HE ]: HE beacon rate support (AP/mesh)

[morrownr]

The lack of DFS support in AP mode is really annoying. Hopefully that is fixed with the mt7925!