Hi Heiner Kallweit, The patches to support Intel AX210 are not fully upstreamed into bluetooth-next. Final patch set review is in progress - https://patchwork.kernel.org/project/bluetooth/list/?series=387475 Regards, Kiran > -----Original Message----- > From: Heiner Kallweit <hkallweit1@xxxxxxxxx> > Sent: Sunday, November 22, 2020 4:30 AM > To: Kiran K <kiraank@xxxxxxxxx>; K, Kiran <kiran.k@xxxxxxxxx> > Cc: BlueZ development <linux-bluetooth@xxxxxxxxxxxxxxx> > Subject: Re: Firmware version read error on Intel AX210 > > Am 21.11.2020 um 23:12 schrieb Heiner Kallweit: > > I have a new AX210 WiFi/Bluetooth card and btintel_read_version() > > fails with error -22 (EINVAL). Underlying error is that the firmware > > version read command returns with hdev->req_result = 18 (0x12). > > (req_status = 0) > >>From what I've read this means invalid command parameters. > > Did something change with AX210 and command 0xfc05 requires specific > > parameters now? Or what else may cause this issue? > > > Seems AX210 uses the new TLV infrastructure. btintel_read_version_tlv() > returns valid data. Will TLV/AX210 support be added for 5.11?