Re: [RESEND PATCH v1] Bluetooth: btusb: MT7925: Add VID/PID 0e8d/8c38

Paul Menzel
2026-04-07T07:45:19Z

Dear Chris,

Thank you for the patch.

Am 07.04.26 um 08:51 schrieb Chris Lu:
> Add VID 0e8d & PID 8c38 for MediaTek MT7925 USB Bluetooth chip.
>
> The information in /sys/kernel/debug/usb/devices about the Bluetooth
> device is listed as the below.
>
> T: Bus=06 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
> D: Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
> P: Vendor=0e8d ProdID=8c38 Rev= 1.00
> S: Manufacturer=MediaTek Inc.
> S: Product=Wireless_Device
> S: SerialNumber=000000000
> C:* #Ifs= 3 Cfg#= 1 Atr=e0 MxPwr=100mA
> A: FirstIf#= 0 IfCount= 3 Cls=e0(wlcon) Sub=01 Prot=01
> I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=125us
> E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
> I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
> I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
> I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
> I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
> I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
> I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
> I: If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=83(I) Atr=01(Isoc) MxPS= 63 Ivl=1ms
> E: Ad=03(O) Atr=01(Isoc) MxPS= 63 Ivl=1ms
> I: If#= 2 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=8a(I) Atr=03(Int.) MxPS= 64 Ivl=125us
> E: Ad=0a(O) Atr=03(Int.) MxPS= 64 Ivl=125us
> I:* If#= 2 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E: Ad=8a(I) Atr=03(Int.) MxPS= 512 Ivl=125us
> E: Ad=0a(O) Atr=03(Int.) MxPS= 512 Ivl=125us
>
> Signed-off-by: Chris Lu <chris.lu@mediatek.com>
> ---
> drivers/bluetooth/btusb.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> index a5e44887a5b5..0bd6254a2f63 100644
> --- a/drivers/bluetooth/btusb.c
> +++ b/drivers/bluetooth/btusb.c
> @@ -759,6 +759,8 @@ static const struct usb_device_id quirks_table[] = {
> BTUSB_WIDEBAND_SPEECH },
> { USB_DEVICE(0x0489, 0xe151), .driver_info = BTUSB_MEDIATEK |
> BTUSB_WIDEBAND_SPEECH },
> + { USB_DEVICE(0x0e8d, 0x8c38), .driver_info = BTUSB_MEDIATEK |
> + BTUSB_WIDEBAND_SPEECH },
> { USB_DEVICE(0x13d3, 0x3602), .driver_info = BTUSB_MEDIATEK |
> BTUSB_WIDEBAND_SPEECH },
> { USB_DEVICE(0x13d3, 0x3603), .driver_info = BTUSB_MEDIATEK |

Won’t that cause conflicts now with the patch *[RESEND PATCH v1]
Bluetooth: btusb: MT7922: Add VID/PID 0e8d/223c*, and shouldn’t it be
send as a series.

Kind regards,

Paul