Brcm2708 (Raspberry Pi 2 B 1.2) Supports adhoc mode?

Installing and Using OpenWrt
1

Does the Raspberry Pi 2 B 1.2 support adhoc mode?
iwlist says:

Supported interface modes:
    * IBSS
    * managed
    * AP
    * P2P-client
    * P2P-GO
    * P2P-device

However, if I try configuring adhoc mode I get errors in the form of:

Thu Jul 22 21:51:42 2021 daemon.notice netifd: radio0 (1760): command failed: No error information (-524)
Thu Jul 22 21:51:42 2021 daemon.notice netifd: radio0 (1793): command failed: No error information (-524)
Thu Jul 22 21:51:42 2021 daemon.notice netifd: radio0 (1793): command failed: I/O error (-5)
Thu Jul 22 21:51:43 2021 daemon.notice netifd: radio0 (1793): command failed: Not supported (-95)

config wifi-device 'radio0'
	option type 'mac80211'
	option channel '11'
	option hwmode '11g'
	option path 'platform/soc/3f300000.mmcnr/mmc_host/mmc1/mmc1:0001/mmc1:0001:1'
	option htmode 'HT20'
	option country 'DE'

config wifi-iface
    option device 'radio0'
    option mode 'adhoc'
    option ssid 'Openwrt'
    opption encryption 'none'
    option network 'lan'

[    8.119709] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[    8.303266] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43430-sdio for chip BCM43430/1
[    8.325266] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Feb 16 2020 22:39:24 version 7.45.98.97 (r724416 CY) FWID 01-bf41ed64
[    8.362524] usbcore: registered new interface driver brcmfmac

OpenWrt 21.02-rc3

Looks like having similarity to: