Currently it is 6.3.9-1-MANJARO-ARM, but I have been experiencing for some time, so it was with previous versions as well.
For your information, yesterday I installed Manjaro ARM with the same kernel on ROCKPro 64 with similar (and other) issues:
[ 0.148031] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148043] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148051] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148059] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148067] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148074] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148082] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148090] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148098] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148105] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148113] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148121] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148128] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148136] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.148143] debugfs: File ':interrupt-controller@fee00000' in directory 'domains' already present!
[ 0.149647] Initialise system trusted keyrings
[ 0.239866] rockchip-pcie f8000000.pcie: host bridge /pcie@f8000000 ranges:
[ 0.239908] rockchip-pcie f8000000.pcie: MEM 0x00fa000000..0x00fbdfffff -> 0x00fa000000
[ 0.239930] rockchip-pcie f8000000.pcie: IO 0x00fbe00000..0x00fbefffff -> 0x00fbe00000
[ 0.240939] rockchip-pcie f8000000.pcie: supply vpcie1v8 not found, using dummy regulator
[ 0.241049] rockchip-pcie f8000000.pcie: supply vpcie0v9 not found, using dummy regulator
[ 0.685475] Freeing initrd memory: 8164K
[ 0.822817] rockchip-pcie f8000000.pcie: PCIe link training gen1 timeout!
[ 0.822861] rockchip-pcie: probe of f8000000.pcie failed with error -110
[ 1.255747] rk808-regulator rk808-regulator.3.auto: there is no dvs0 gpio
[ 1.255800] rk808-regulator rk808-regulator.3.auto: there is no dvs1 gpio
[ 1.270423] OF: graph: no port node found in /i2c@ff3d0000/typec-portc@22
[ 1.272945] ehci-platform fe380000.usb: USB 2.0 started, EHCI 1.00
[ 1.274066] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.03
[ 1.274086] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.274099] usb usb5: Product: EHCI Host Controller
[ 1.274109] usb usb5: Manufacturer: Linux 6.3.9-1-MANJARO-ARM ehci_hcd
[ 1.274118] usb usb5: SerialNumber: fe380000.usb
[ 1.275278] hub 5-0:1.0: USB hub found
[ 1.275461] hub 5-0:1.0: 1 port detected
[ 6.092671] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 6.096810] brcmfmac mmc0:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.pine64,rockpro64-v2.1.bin failed with error -2
[ 6.254628] brcmfmac_wcc: brcmf_wcc_attach: executing
[ 6.263588] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Apr 15 2021 03:03:20 version 7.45.234 (4ca95bb CY) FWID 01-996384e2
[ 6.773056] Bluetooth: hci0: BCM4345C0
[ 6.773084] Bluetooth: hci0: BCM4345C0 (003.001.025) build 0000
[ 6.773600] Bluetooth: hci0: BCM: firmware Patch file not found, tried:
[ 6.773621] Bluetooth: hci0: BCM: 'brcm/BCM4345C0.pine64,rockpro64-v2.1.hcd'
[ 6.773626] Bluetooth: hci0: BCM: 'brcm/BCM4345C0.hcd'
[ 6.773630] Bluetooth: hci0: BCM: 'brcm/BCM.pine64,rockpro64-v2.1.hcd'
[ 6.773635] Bluetooth: hci0: BCM: 'brcm/BCM.hcd'
[ 10.253780] rk_gmac-dwmac fe300000.ethernet end0: Register MEM_TYPE_PAGE_POOL RxQ-0
[ 10.373020] rk_gmac-dwmac fe300000.ethernet end0: PHY [stmmac-0:00] driver [RTL8211F Gigabit Ethernet] (irq=POLL)
[ 10.382880] rk_gmac-dwmac fe300000.ethernet end0: No Safety Features support found
[ 10.382924] rk_gmac-dwmac fe300000.ethernet end0: PTP not supported by HW
[ 10.383438] rk_gmac-dwmac fe300000.ethernet end0: configuring for phy/rgmii link mode
[ 13.088235] brcmfmac: brcmf_set_channel: set chanspec 0x100c fail, reason -52
[ 13.088550] brcmfmac: brcmf_set_channel: set chanspec 0x100d fail, reason -52
[ 13.088844] brcmfmac: brcmf_set_channel: set chanspec 0x100e fail, reason -52
[ 13.089128] brcmfmac: brcmf_set_channel: set chanspec 0xd022 fail, reason -52
[ 13.208171] brcmfmac: brcmf_set_channel: set chanspec 0xd026 fail, reason -52
[ 13.318396] brcmfmac: brcmf_set_channel: set chanspec 0xd02a fail, reason -52
[ 13.427560] brcmfmac: brcmf_set_channel: set chanspec 0xd02e fail, reason -52
[ 13.548476] brcmfmac: brcmf_set_channel: set chanspec 0xd034 fail, reason -52
[ 13.548950] brcmfmac: brcmf_set_channel: set chanspec 0xd038 fail, reason -52
[ 13.549337] brcmfmac: brcmf_set_channel: set chanspec 0xd03c fail, reason -52
[ 13.549673] brcmfmac: brcmf_set_channel: set chanspec 0xd040 fail, reason -52
[ 13.550008] brcmfmac: brcmf_set_channel: set chanspec 0xd064 fail, reason -52
[ 13.550343] brcmfmac: brcmf_set_channel: set chanspec 0xd068 fail, reason -52
[ 13.550677] brcmfmac: brcmf_set_channel: set chanspec 0xd06c fail, reason -52
[ 13.551011] brcmfmac: brcmf_set_channel: set chanspec 0xd070 fail, reason -52
[ 13.551345] brcmfmac: brcmf_set_channel: set chanspec 0xd074 fail, reason -52
[ 13.551677] brcmfmac: brcmf_set_channel: set chanspec 0xd078 fail, reason -52
[ 13.552011] brcmfmac: brcmf_set_channel: set chanspec 0xd07c fail, reason -52
[ 13.552346] brcmfmac: brcmf_set_channel: set chanspec 0xd080 fail, reason -52
[ 13.552681] brcmfmac: brcmf_set_channel: set chanspec 0xd084 fail, reason -52
[ 13.556884] brcmfmac: brcmf_set_channel: set chanspec 0xd088 fail, reason -52
[ 13.557506] brcmfmac: brcmf_set_channel: set chanspec 0xd08c fail, reason -52
[ 13.558098] brcmfmac: brcmf_set_channel: set chanspec 0xd090 fail, reason -52
[ 14.311984] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 15.200898] hdmi-audio-codec hdmi-audio-codec.8.auto: Only one simultaneous stream supported!
[ 15.200913] hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
[ 15.200926] ff8a0000.i2s-i2s-hifi: ASoC: error at __soc_pcm_open on ff8a0000.i2s-i2s-hifi: -22
[ 15.302781] Bluetooth: RFCOMM TTY layer initialized
[ 15.302825] Bluetooth: RFCOMM socket layer initialized
[ 15.302858] Bluetooth: RFCOMM ver 1.11
[ 16.887878] hdmi-audio-codec hdmi-audio-codec.8.auto: Only one simultaneous stream supported!
[ 16.887890] hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
[ 16.887901] ff8a0000.i2s-i2s-hifi: ASoC: error at __soc_pcm_open on ff8a0000.i2s-i2s-hifi: -22
[ 17.114741] platform sound-dit: deferred probe pending
[ 20.004584] hdmi-audio-codec hdmi-audio-codec.8.auto: Only one simultaneous stream supported!
[ 20.004600] hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
[ 20.004613] ff8a0000.i2s-i2s-hifi: ASoC: error at __soc_pcm_open on ff8a0000.i2s-i2s-hifi: -22
[ 23.066401] hdmi-audio-codec hdmi-audio-codec.8.auto: Only one simultaneous stream supported!
[ 23.066421] hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
[ 23.066441] ff8a0000.i2s-i2s-hifi: ASoC: error at __soc_pcm_open on ff8a0000.i2s-i2s-hifi: -22
[ 26.121491] hdmi-audio-codec hdmi-audio-codec.8.auto: Only one simultaneous stream supported!
[ 26.121506] hdmi-audio-codec hdmi-audio-codec.8.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -22
[ 26.121518] ff8a0000.i2s-i2s-hifi: ASoC: error at __soc_pcm_open on ff8a0000.i2s-i2s-hifi: -22
[27767.423288] brcmfmac: brcmf_set_channel: set chanspec 0x100c fail, reason -52
[27767.424079] brcmfmac: brcmf_set_channel: set chanspec 0x100d fail, reason -52
[27767.424758] brcmfmac: brcmf_set_channel: set chanspec 0x100e fail, reason -52
[27767.425419] brcmfmac: brcmf_set_channel: set chanspec 0xd022 fail, reason -52
[27767.543015] brcmfmac: brcmf_set_channel: set chanspec 0xd026 fail, reason -52
[27767.663709] brcmfmac: brcmf_set_channel: set chanspec 0xd02a fail, reason -52
[27767.782904] brcmfmac: brcmf_set_channel: set chanspec 0xd02e fail, reason -52
[27767.903021] brcmfmac: brcmf_set_channel: set chanspec 0xd034 fail, reason -52