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Sun, 05 Jul 2026 01:13:29 +0200 From: cito@online.de To: linux-bluetooth@vger.kernel.org Cc: marcel@holtmann.org, luiz.dentz@gmail.com, linux-kernel@vger.kernel.org, Christoph Zwerschke , stable@vger.kernel.org Subject: [PATCH] Bluetooth: btusb: Add ASUS USB-BT540 and USB-BT600 for Realtek 8761CU Date: Sun, 5 Jul 2026 01:13:12 +0200 Message-ID: <20260704231312.340274-1-cito@online.de> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:zycdu/o18sqmVRZkp/YCpzKX2kW3FCPjOkw8Q2UZzTEwY53o9Ld 4UG9OhcDrcjLWtNmxMPnCGYxp67/PAlGpGboXwmpIAcfMbt9/sIvU8fApwKwDZ8+/K9CB+u Ci9vvsL52Fwcx3Pm1RzMhkfW/pfNIH603vuZ6RlMNTG0a8KKK9rRkedbecR9l9BeThR/Qi1 sBKDyhFM83Fbkw7MGHIqQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:xFKsDnL1uJg=;nFwGVITr2I5FszI7OkMjZAfp4t1 wOeA647SJZGWLjeW8w9RbRuYNc+BP+SJ4crOUMuTjUP08wKCpghFXxPI9Jf6mAWoFG3gF7jjL j9QQHFgYt7JAC74ji511lvlAvVOuY+p476AUETUkFRCTfRNGy1MhgOx2F1/3t/vq4T/SNNOwa u/pcxzVOFdwU2KKJtBnsC01rtp1NKC9TfJxZ6TtoE91zEJvmU3NyzL8O5ELkD6fQuGqNfSdZH 1XrBM3liM4kOn6n1PjY7Y+mTpPSzu0zSbF3SyanSkwyUSjCcMx1wGwaqGpH4HVgXyMazJIUs+ jcylbPq+b39vCWZLMDj/oRd7EZxyyrkbD9D2RYJsEP/DbFiVbM+jonHuaTpNaEOXE2bGB1Don Qr131y5h2vktcbffucn+r5pdAQPVROskdXKx/1Y3lg12Iqg4UMIqfINj0g0a6NMnogEzRypPY LFTiU6d+eXNq7WgC8OOVXH2DzKssFITDJWo4HsUqBeSa7RBR0DDn7aHzg9lVM4lfv4KnO3Jlr Zv1iymKNTUtTYk0ZbrOwnE3j/Fcjk6Ii0JQoi64NJ3lezgbhwoxBr+A19mAHdMhRLAeeSq7vY PMzANVwxTnsBtndv3A5j87tDL0wgxVDS+JURGPnYztfHVPw4zMaE5KpM0RXIYTj9lGiorjrZ3 7zzZNpSzeoJHKpy/MGXtZJyG3IDyYfYlj3013tiFGnlB+Vxi/yM7WXhb/WOwshW1L08HvDWP6 8f4wYx/aNEG5g4U7jbiqzfYOQ5otCu6osMEp1bd3tNwgEyGvi74rEI4PGgMVZg3xaR2AA4OlZ zvAX3BMEbULBtQc2SD+Ta/BN7PyzBFoZ+v/Y+T/KIEv2O5r5cCdF+BLor7YwNVGCpNIIteFie /RnUumOxkySjwNwp3o1kp0xLt7K7jhFw5tw2wmzsw4RT/+0ZFhkRlDhqMvLILgoWZTJZd8EoJ MyOsGzaqKIOH1KSJeFbR+nyJ6i4QTsXcKWpgWfUMS32Ro8uCV7Sb+FXiSFmhQ8r3FPwh8RzFB FW4IEhrg2RfSGXTshO3cwNlg1euAKF27srcUv9IB1H2lbkoyVmjLwA++lD7MenfWpz5ZTOLXW 5dsqRkeKtkLvfTUfqgUmAkcK2DBosoD3neASgEyKWw+Wz7w+7raZAuWbMkdHFC1Ri8zQWsosw N38L1huXPbiPttVhFtEOf96H0cnKDp70u98zpPO7z0MqRhR6QjpxYRuSFiQKRNLZotBWs+jUc NKCOaDp8REqW6rLuNd9TN5fA+ouk6uj00UVnftCyZ3SdpC3RFwn5EliJDRQPNVqzZJeaHxE27 nKwu/BcoZuNnUoSBXhJiuMIYu5UBvCa16ZvJPLjGVy/OH6QJ/40u+UKbzozNJQcVsF5keSy2I Ht3cGyX/gzR/LwHkcPrPHsOkvhMDnguIDURfhQm393LN/l/dYZuaF9GUS12XFSp6nn5+ipbZP +X7FPR8Nh02vjf9FqQzhiHFvGngjsfEXbnhgf7hKP5WZhJjb366fVAMtu8XtXV3rzFgLCNzuH ghKOPwz8sAh2rfLlRSN9MWX2Ck0Bsvw31tAgj9kvknH1iIhUfkJGSV8Wb1YwawHkmd2Dfw9bb XA97OSp9TWInGN40d+loFUbyMsQhPyKNIXSx+CUiughzEJ7Peut8idr7+LOKB7Y7Oiwxkarpl jUeJXCmlCBBk0UBPaYQkk1Gw76OX0QHZe0vdsiSsFwYeck7+6QQdvwx28Yxd7R6M6M8b4S3Dy +mIBj4w38DUWFlMGEMK9WsvUf1Nmrx4Nyv+xRdDSq86O5CV1E4YYf1dIBaO8gniEVeYqyRHT+ bCQZUhjzdMZOPlyRtjTbmmnsuHMyNasz18fjAvYrmQqC1yiEGjfwPfrZJT6+lLBIS8D7tH7hY XAOYqCojLXrAdVe9Is/T/ffSQEvUvQaX70EvLDHNU+PL2jjXJL6ltivRz69Mxqxo9EDYB0rEL Uq28XrSQ== From: Christoph Zwerschke Add the vendor/product IDs (0x0b05, 0x1bef) and (0x0b05, 0x1d70) to the usb_device_id table for the Realtek RTL8761CU-based ASUS USB-BT540 and USB-BT600 adapters. Both bind via the generic Bluetooth class today, so BTUSB_REALTEK is never set and the rtl8761cu firmware is not loaded, leaving the controller non-functional. With the entries the driver loads rtl_bt/rtl8761cu_fw.bin (already shipped by linux-firmware) and the adapters work (tested: A2DP and ASHA). Similar to commit bc597f0cc44f ("Bluetooth: btusb: Add TP-Link UB600 for Realtek 8761BUV"). Both adapters share the same descriptor layout and differ only in idProduct, hence a single patch adding both entries. Device info from /sys/kernel/debug/usb/devices: T: Bus=3D01 Lev=3D01 Prnt=3D01 Port=3D01 Cnt=3D01 Dev#=3D 22 Spd=3D12 M= xCh=3D 0 D: Ver=3D 1.10 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 MxPS=3D64 #Cfgs=3D 1 P: Vendor=3D0b05 ProdID=3D1bef Rev=3D 2.00 S: Manufacturer=3DRealtek S: Product=3DBluetooth Controller C:* #Ifs=3D 2 Cfg#=3D 1 Atr=3De0 MxPwr=3D100mA I:* If#=3D 0 Alt=3D 0 #EPs=3D 3 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D81(I) Atr=3D03(Int.) MxPS=3D 64 Ivl=3D1ms E: Ad=3D02(O) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms E: Ad=3D82(I) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms I:* If#=3D 1 Alt=3D 0 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms I: If#=3D 1 Alt=3D 1 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms I: If#=3D 1 Alt=3D 2 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms I: If#=3D 1 Alt=3D 3 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms I: If#=3D 1 Alt=3D 4 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms I: If#=3D 1 Alt=3D 5 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms I: If#=3D 1 Alt=3D 6 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 63 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 63 Ivl=3D1ms T: Bus=3D01 Lev=3D01 Prnt=3D01 Port=3D01 Cnt=3D01 Dev#=3D 23 Spd=3D12 M= xCh=3D 0 D: Ver=3D 1.10 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 MxPS=3D64 #Cfgs=3D 1 P: Vendor=3D0b05 ProdID=3D1d70 Rev=3D 2.00 S: Manufacturer=3DRealtek S: Product=3DBluetooth Controller C:* #Ifs=3D 2 Cfg#=3D 1 Atr=3De0 MxPwr=3D100mA I:* If#=3D 0 Alt=3D 0 #EPs=3D 3 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D81(I) Atr=3D03(Int.) MxPS=3D 64 Ivl=3D1ms E: Ad=3D02(O) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms E: Ad=3D82(I) Atr=3D02(Bulk) MxPS=3D 64 Ivl=3D0ms I:* If#=3D 1 Alt=3D 0 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 0 Ivl=3D1ms I: If#=3D 1 Alt=3D 1 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 9 Ivl=3D1ms I: If#=3D 1 Alt=3D 2 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 17 Ivl=3D1ms I: If#=3D 1 Alt=3D 3 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 25 Ivl=3D1ms I: If#=3D 1 Alt=3D 4 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 33 Ivl=3D1ms I: If#=3D 1 Alt=3D 5 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 49 Ivl=3D1ms I: If#=3D 1 Alt=3D 6 #EPs=3D 2 Cls=3De0(wlcon) Sub=3D01 Prot=3D01 Driver= =3Dbtusb E: Ad=3D83(I) Atr=3D01(Isoc) MxPS=3D 63 Ivl=3D1ms E: Ad=3D03(O) Atr=3D01(Isoc) MxPS=3D 63 Ivl=3D1ms Cc: stable@vger.kernel.org Signed-off-by: Christoph Zwerschke =2D-- drivers/bluetooth/btusb.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e9b0b1dcc1d1..9726a007d25a 100644 =2D-- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -856,6 +856,12 @@ static const struct usb_device_id quirks_table[] =3D = { { USB_DEVICE(0x37ad, 0x0600), .driver_info =3D BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH }, =20 + /* Additional Realtek 8761CU Bluetooth devices */ + { USB_DEVICE(0x0b05, 0x1bef), .driver_info =3D BTUSB_REALTEK | + BTUSB_WIDEBAND_SPEECH }, + { USB_DEVICE(0x0b05, 0x1d70), .driver_info =3D BTUSB_REALTEK | + BTUSB_WIDEBAND_SPEECH }, + /* Additional Realtek 8821AE Bluetooth devices */ { USB_DEVICE(0x0b05, 0x17dc), .driver_info =3D BTUSB_REALTEK }, { USB_DEVICE(0x13d3, 0x3414), .driver_info =3D BTUSB_REALTEK }, =2D-=20 2.55.0