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This commit addresses WiFi issues on Raspberry Pi 5 by fixing: 1. Regulatory domain configuration (PHY-specific hint required) 2. WiFi state persistence across reboots (using systemd-rfkill) **Problem:** - brcmfmac driver keeps WiFi soft-blocked until regulatory domain is set - ieee80211_regdom kernel parameter sets global default but PHY won't adopt it without userspace regulatory hint via 'iw reg set' - WiFi state persistence had race conditions between ConnMan and hardware rfkill state on boot **Solution:** **Regulatory Domain (udev-based):** - 85-wifi-regdomain.rules: Triggers when phy0 appears, reads country code from /etc/regdomain, runs 'iw reg set <COUNTRY>' - cfg80211.conf: Sets global regulatory domain default as fallback - Provisioning-friendly: Update /etc/regdomain and run 'iw reg set' **State Persistence (systemd-rfkill):** - Uses standard systemd-rfkill to persist WiFi enable/disable state - wifi-rfkill-migrate.service: One-time migration from ConnMan settings to rfkill state (runs before ConnMan on first boot only) - wifi-nudge.service: Ensures wpa_supplicant registers wlan0 with ConnMan when WiFi is enabled on boot - rfkill is single source of truth, ConnMan synchronizes to match **Architecture:** - udev owns regulatory domain setting - systemd-rfkill owns radio state persistence - ConnMan owns network management - No interference with USB gadget networking (ConnMan starts immediately) **Boot Sequence:** 1. brcmfmac loads → phy0 appears (rfkill registered, default unblocked) 2. udev sets regulatory domain via iw reg set 3. wlan0 appears, brought UP by udev rule 4. systemd-rfkill restores saved rfkill state 5. wifi-rfkill-migrate (first boot only) sets initial state from ConnMan 6. ConnMan starts, reads rfkill state 7. wifi-nudge toggles WiFi if enabled (ensures wpa_supplicant registration) Closes EDG-322
mihai-chiorean
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Fixes #EDG-322
Summary
This PR enables full WiFi functionality on Raspberry Pi 5 by upgrading to kernel 6.12 and implementing proper regulatory domain configuration and WiFi state persistence.
Problem
Raspberry Pi 5 WiFi was not working due to several issues:
Root Causes
Solution
Kernel Upgrade (6.6 → 6.12)
WiFi DISTRO_FEATURES
ConnMan CLI Tools
Regulatory Domain Configuration
WiFi State Persistence
Architecture
udev → regulatory domain setting
systemd-rfkill → WiFi radio on/off persistence
ConnMan → network management
Boot Sequence
Testing
Verified on Raspberry Pi 5:
Usage
Enable WiFi:
connmanctl enable wifi
connmanctl scan wifi
connmanctl services
Set Country Code (optional):
echo "US" > /etc/regdomain
iw reg set US
Files Changed
References