System log filled with Bluetooth power change messages

After upgrading to macOS Big Sur, every second starting from early boot system log fills with Bluetooth messages about USB power state. Kexts are updated to latest versions. Bluetooth works well, pairs to headphones without any problem.

Hardware:

CPU: Intel Core i5-3320M

GPU: Intel HD 4000

RAM: 8 GB 1600 MHz Single Channel

Motherboard/Laptop model: HP EliteBook 8470p

Audio Codec: IDT 92HD81B1X

Ethernet Card: Intel 82579LM

Wifi/BT Card: Atheros AR9285/Broadcom BCM20702A0

What guide/tool followed: Dortania Guide (OpenCore Install Guide), RehabMan SSDT for HP laptops (RehabMan/HP-ProBook-4x30s-DSDT-Patch)

What part I got an issue with: Bluetooth/USB power management

What files/config I am using: OpenCore 0.7.2, latest BrcmPatchRAM-2.6.0, config.plist and SSDT (Google Drive)

Extra Info: messages from system logs

default 10:16:20.324418+0300 kernel 000938.848040 BCM20702A0@1d160000: IOUSBHostDevice::forcePowerGated: kPowerStateSuspended timeout 1000ms default 10:16:20.324495+0300 kernel 000938.848125 BCM20702A0@1d160000: IOUSBHostDevice::powerStateWillChangeToGated: kPowerStateSuspended default 10:16:20.324594+0300 kernel 000938.848222 BCM20702A0@1d160000: IOUSBHostDevice::setPowerStateGated: kPowerStateOn -> kPowerStateSuspended default 10:16:20.324600+0300 kernel 000938.848232 BCM20702A0@1d160000: IOUSBHostDevice::setPowerStateGated: suspending pipes default 10:16:20.324620+0300 kernel 000938.848250 BCM20702A0@1d160000: IOUSBHostDevice::forcePowerGated: allowing power level to float default 10:16:20.324630+0300 kernel 000938.848259 BCM20702A0@1d160000: IOUSBHostDevice::forcePowerGated: kPowerStateSuspended completed with 0x00000000 after 0ms default 10:16:20.324688+0300 kernel 000938.848317 BCM20702A0@1d160000: IOUSBHostDevice::powerStateWillChangeToGated: kPowerStateOn default 10:16:20.324721+0300 kernel 000938.848350 BCM20702A0@1d160000: IOUSBHostDevice::setPowerStateGated: kPowerStateSuspended -> kPowerStateOn default 10:16:20.324737+0300 kernel 000938.848368 BCM20702A0@1d160000: IOUSBHostDevice::setPowerStateGated: resuming pipes default 10:16:20.324815+0300 kernel 000938.848443 BCM20702A0@1d160000: IOUSBHostDevice::powerChangeDone: default 10:16:20.324842+0300 kernel 000938.848468 BCM20702A0@1d160000: IOUSBHostDevice::updateIdlePolicyGated: IOUSBHostInterface@0 [<private>] has an idle policy of 500ms default 10:16:20.324851+0300 kernel 000938.848481 BCM20702A0@1d160000: IOUSBHostDevice::updateIdlePolicyGated: IOUSBHostInterface@1 [<private>] has an idle policy of 500ms default 10:16:20.324861+0300 kernel 000938.848491 BCM20702A0@1d160000: IOUSBHostDevice::updateIdlePolicyGated: consensus idle policy timeout 500ms