linux-kernel - Re: [PATCH] [PATCH] Bluetooth: btusb: Add support Mediatek MT7920

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Date: Mon, 1 Apr 2024 16:20:50 +0100
From: Mike Lothian <mike@...eburn.co.uk>
To: peter.tsao@...iatek.com
Cc: aaron.hou@...iatek.com, chris.lu@...iatek.com, deren.Wu@...iatek.com, 
	johan.hedberg@...il.com, linux-bluetooth@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org, 
	luiz.dentz@...il.com, marcel@...tmann.org, sean.wang@...iatek.com, 
	steve.lee@...iatek.com
Subject: Re: [PATCH] [PATCH] Bluetooth: btusb: Add support Mediatek MT7920

On Mon, 1 Apr 2024 at 15:44, Mike Lothian <mike@...eburn.co.uk> wrote:
>
> Hi
>
> I think this patch is causing issues with older firmware
>
> Bus 003 Device 002: ID 13d3:3563 IMC Networks Wireless_Device
>
> [    0.315064] Bluetooth: Core ver 2.22
> [    0.315064] NET: Registered PF_BLUETOOTH protocol family
> [    0.315064] Bluetooth: HCI device and connection manager initialized
> [    0.315064] Bluetooth: HCI socket layer initialized
> [    0.315064] Bluetooth: L2CAP socket layer initialized
> [    0.315064] Bluetooth: SCO socket layer initialized
> [    4.670811] Bluetooth: RFCOMM TTY layer initialized
> [    4.671029] Bluetooth: RFCOMM socket layer initialized
> [    4.671790] Bluetooth: RFCOMM ver 1.11
> [    4.673416] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
> [    4.673659] Bluetooth: BNEP filters: protocol multicast
> [    4.673895] Bluetooth: BNEP socket layer initialized
> [    4.674125] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
> [    4.674360] Bluetooth: HIDP socket layer initialized
> [    5.016365] bluetooth hci0: Direct firmware load for mediatek/BT_RAM_CODE_MT7961_1a_2_hdr.bin failed with error -2
> [    5.017163] Bluetooth: hci0: Failed to load firmware file (-2)
> [    5.017557] Bluetooth: hci0: Failed to set up firmware (-2)
> [    5.018129] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
>
> The correct name should be mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin
>
> Reverting this patch fixes things
>
> Cheers
>
> Mike

If it helps, the device ID is 0x7961 and the fw_flavour is 24 or 0x18 in hex