Default init case By default, when no country regulatory setting is defined, we use WW (World Wide safe setting, meaning we only transmit on bands which are allowed worldwide, with the TX power compatible with all countries regulations)   Setting country 1/ When operating in AP mode: - we usually set country code (ex : country_code=JP) in hostapd.conf to define the country. - this country definition will be advertised to all connected STA if ieee80211d=1 is set in hostpad.conf - the country can also be set with "iw reg set" command   2/ When operating in STA mode - country code can be set with "iw reg set" command or in wpa_supplicant.conf (ex : country=jp) - once connected to the AP (with 80211d enabled), the STA will switch to the AP country setting (this behaviour can be disabled by adding country_ie_ignore=1 driver parameter)   Once country is set: - we will only transmit on channels allowed for that country - with country maximum TX power - we might use DFS feature on channels declared as DFS channels for that specific country   TX power settings   1/ By default, using Linux regulatory settings (/lib/firmware/regulatory.db, generated from db.txt) These settings define allowed channels, DFS flags and max TX power on a country basis See section "Regulatory db" further.   2/ Linux regulatory settings can be overwritten by: a. cntry_txpwr=0 and txpwrlimit_cfg=nxp/txpower.bin driver param (generated from txpower.conf (channel/MCS->txpower), see AN13009) Same setting for all countries (static). Using channels/flags from db.txt, and minimum TX power between db.txt and txpower.bin/rgpower.bin b. cntry_txpwr=1 (look for nxp/txpower_XX.bin files (generated from txpower.conf (channel/MCS->txpower), see AN13009) Need one txpower_XX.bin file for each country XX (dynamically loaded, for instance with iw reg set XX) Using channels/flags from db.txt, and minimum TX power between db.txt and txpower_XX.bin   cntry_txpwr txpwrlimit_cfg TX power limit Method 0 nxp/txpower.bin nxp/txpower.bin (static) V1 1 - nxp/txpower_XX.bin (dynamic) V1 cfg     We have default TX power tables, but customer can tune these TX power settings, based on their HW. Please refer to "AN13009 Wi-Fi Tx Power Management in Linux"       Regulatory db   Source https://wireless.wiki.kernel.org/en/developers/Regulatory/wireless-regdb   Wifi regulatory setting (allow channels, etc) are defined in db.txt, then converted to regulatory.db (store in /lib/firmware) We can get official db.txt from here, and build regulatory.db with below command   git clone git://git.kernel.org/pub/scm/linux/kernel/git/wens/wireless-regdb.git make   Kernel regulatory.db integrity is checked by the Linux kernel. Disabling REGDB signature check with the folllowing kernel config: CONFIG_EXPERT=y CONFIG_CFG80211_CERTIFICATION_ONUS=y # CONFIG_CFG80211_REQUIRE_SIGNED_REGDB is not set   Rebuilding kernel and flashing scp Image root@192.168.0.2:/run/media/mmcblk0p1/      iw reg command examples and other notes   root@imx8mqevk:~# iw reg get global country 00: DFS-UNSET         (2402 - 2472 @ 40), (N/A, 20), (N/A)         (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN         (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN         (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN         (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN         (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN         (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN         (57240 - 63720 @ 2160), (N/A, 0), (N/A) root@imx8mqevk:~# iw reg get global country FR: DFS-ETSI         (2400 - 2483 @ 40), (N/A, 20), (N/A)         (5150 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW         (5250 - 5350 @ 80), (N/A, 20), (0 ms), NO-OUTDOOR, DFS, AUTO-BW         (5470 - 5725 @ 160), (N/A, 26), (0 ms), DFS         (5725 - 5875 @ 80), (N/A, 13), (N/A)         (57000 - 66000 @ 2160), (N/A, 40), (N/A)   By default (if no country is set), we are using the world domain. this is the most restrictive. Then you can set the country (using driver module parameter, wpa_supplicant.conf, etc) or get the country automatically provided by the access point (80211d). This will update the regulatory domain, meaning the allowed channels, etc. You can check the country settings with "iw reg get" command.   The regulatory domain has priority, compared to the channel list you would set in the wpa_supplicant.conf.  

CMSIS, the ARM Cortex Microcontroller Software Interface Standard, can be used to distribute software components in standard package format. CMSIS compliant software components allow: • Easy reuse of example applications or template code • Combination of SW components from multiple vendors CMSIS packages available here: https://www.keil.arm.com/packs/ NXP WiFi package available here: https://www.keil.arm.com/packs/wifi-nxp/versions/   Getting NXP WiFi/BT software   Please find the minimal setup required to download the NXP WiFi/BT software CMSIS packs: First, get cpackget binary from the Open CMSIS Pack toolbox binaries Then, install the NXP WiFi and Bluetooth packages and their dependencies using below commands cpackget add NXP::WIFI@2.0.0 cpackget add NXP::WIRELESS_WPA_SUPPLICANT@2.0.0 cpackget add NXP::EDGEFAST_BT_BLE@2.0.0   Please note that the CMSIS software packs are installed in below directory: ~/.cache/arm/packs/NXP/   Building NXP WiFi/Bluetooth software   Using combined WiFi+Bluetooth application on i.MXRT1060-revC board, as an example.   Prerequisite Follow below steps to install all the required tools to get CMSIS packages and build them . <(curl https://aka.ms/vcpkg-init.sh -L) . ~/.vcpkg/vcpkg-init vcpkg new --application vcpkg add artifact arm:cmsis-toolbox vcpkg add artifact microsoft:cmake vcpkg add artifact microsoft:ninja vcpkg add artifact arm:arm-none-eabi-gcc vcpkg activate Refer to CMSIS toolbox installation documentation    Activate required tools . ~/.vcpkg/vcpkg-init vcpkg activate Install the NXP i.MXRT1060-REVC Bluetooth examples and their dependencies cpackget add NXP::MIMXRT1060-EVKC_EDGEFAST_BLUETOOTH_Examples@1.0.0 Workaround: current NXP SW is aligned with ARM::CMSIS@5.8.0, and does not support latest ARM::CMSIS@6.0.0, so we need to use older version with below commands cpackget rm ARM::CMSIS@6.0.0 cpackget add ARM::CMSIS@5.8.0 List the installed packages cpackget list Building combined WiFi+BT example application Copy example application to local directory and provide write permissions mkdir -p ~/test cp -r ~/.cache/arm/packs/NXP/MIMXRT1060-EVKC_EDGEFAST_BLUETOOTH_Examples/1.0.0/boards/evkcmimxrt1060/edgefast_bluetooth_examples/wifi_cli_over_ble_wu/ ~/test/ cd ~/test/wifi_cli_over_ble_wu/ && chmod -R u+w .   Build the application csolution convert wifi_cli_over_ble_wu.csolution.yml cbuild wifi_cli_over_ble_wu.flexspi_nor_debug+armgcc.cprj Convert elf to bin for flashing cd armgcc/flexspi_nor_debug arm-none-eabi-objcopy wifi_cli_over_ble_wu.elf -O binary wifi_cli_over_ble_wu.bin

This article describes the detailed steps for integrating 88W8801 to i.MX6ULL-EVK and L5.4.70_2.3.0. If you are not proficient in compiling Linux BSP for I.MX platform, you can refer to this link: https://community.nxp.com/t5/Wireless-Connectivity-Knowledge/WiFi-BT-Integretion-Linux-BSP-compilation-for-iMX-platform/ta-p/1277199 For more detailed information, see attachment, please!