From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D28B03A901E for ; Tue, 20 Jan 2026 23:41:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768952501; cv=none; b=Od/8rRFtRT+OVqKpCZBTvczQF1e1LcjqyhhEouyl6svqln0C71Tw/GvVIBQt+hmTz6t2v08ou3hDx/if+b4otKmreZNqFnAzx8KVHY1ftooKjpdOQzce0N/OkqSkzjpdevO8Hj9bVazAd5X5epOKkJepQTwfTIbWHGij3H6fPtE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768952501; c=relaxed/simple; bh=8HqEu+H/hjEdiK+L63LsgvDIATaCEjw1vpvr3BsOUYY=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=kbW0c5sfjXjO/rrf2d6hQQRocy4glecT5Y0x0PxI94y+Wa/p5GR+OU3zL5OddZHI6UZvs+avA8qX3u3JCCMjz8IXIRq8irwhD+dea6Aa33G1S5r8bseCSXM2RZ5+UpZlZFh6kXjAuoRILo/5UiqTMYRrxPXp6GsJXRKmoxPgEYE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=H4CnN/r+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="H4CnN/r+" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5FB53C19423 for ; Tue, 20 Jan 2026 23:41:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768952501; bh=8HqEu+H/hjEdiK+L63LsgvDIATaCEjw1vpvr3BsOUYY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=H4CnN/r+T3easa0z+cDB9wkGGlllgYWLhSELjWiDONtjEha4zxo5zLJdyQ33Iky2/ f71+hzSUT6kw7851GLvJf69OWq7Iz2QyNIb1L1Hnl7QoHiU9VIjigjcd+9t1NfhCWX eCMTxPouzOWrCnOUJmjB9YcERupRaXb2D3NTl59rfoKeC3flRafoz8oT2n/YHQGYVr 0FbDgAfCu3ea2nyyChzDFR8CoAMWAMsz5AM3GN1nHOs1j3EnHuFbWQy1PmQkDtxnWc Asr/8ea+yLTAkxPo1nBTlCoyiK7AjFqk6AnnFBXzBYbblPxL6LgrQOb7EMQeeZTDIf T3bpo086jmUeA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 556A0C433E1; Tue, 20 Jan 2026 23:41:41 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 220986] MediaTek MT7902 Bluetooth adapter (USB 13d3:3596) - missing kernel support for hardware variant 0x7902 Date: Tue, 20 Jan 2026 23:41:41 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Drivers X-Bugzilla-Component: Bluetooth X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: blocking X-Bugzilla-Who: aamolodc@gmail.com X-Bugzilla-Status: REOPENED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220986 --- Comment #4 from Alex (aamolodc@gmail.com) --- UPDATE 2026-01-21: Root cause identified, kernel fix still needed CORRECTION: This chip is MT7902, not MT7925. Evidence: - PCIe ID: 14c3:7902 ("MT7902 802.11ax PCIe Wireless Network Adapter") - Hardware variant reports: 0x7902 - Firmware build: 20220107141051 KERNEL CHANGES REQUIRED: 1. drivers/bluetooth/btusb.c - Add USB ID: { USB_DEVICE(0x13d3, 0x3596), .driver_info =3D BTUSB_MEDIATEK | BTUSB_WIDEBAND_SPEECH } 2. drivers/bluetooth/btmtk.c - Add hardware variant 0x7902 to switch statem= ent: case 0x7902: (alongside existing 0x7922, 0x7925, 0x7961) 3. linux-firmware - Include MT7902 Bluetooth firmware (BT_RAM_CODE_MT7902_1_1_hdr.bin) --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=