i.MX Processorsのトピック/dev/ttyLP1 is not created for Bluetooth

/dev/ttyLP1 is not created for Bluetooth

vinothkumars — Tue, 12 Oct 2021 11:37:20 GMT

Hi All,

I unable to create the serial port (/dev/ttyLP1) for bluetooth.

Please find my configuration,

&lpuart1 { /* BT */
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_lpuart1>;
resets = <&modem_reset>;
status = "okay";

/* Enable bt driver for marvel uart8987 */
bluetooth {
compatible = "mrvl,88w8897";
status = "okay";
};
};

I unable to find the tty ,

/sys/devices/platform/bus@5a000000/5a070000.serial

Re: /dev/ttyLP1 is not created for Bluetooth

igorpadykov — Wed, 13 Oct 2021 00:14:55 GMT

Hi Vinothkumar

what bsp used in the case.

Best regards
igor

Re: /dev/ttyLP1 is not created for Bluetooth

vinothkumars — Wed, 13 Oct 2021 04:16:30 GMT

Thank you @igorpadykov ,

I am working IMX8QM Custom platform with Yocto BSP (L5.10) version with Marvell chip for Bluetooth which is using UART interface.

Re: /dev/ttyLP1 is not created for Bluetooth

vinothkumars — Fri, 15 Oct 2021 14:16:31 GMT

Hi @igorpadykov

Please find my response,

[bluetooth]# connect D2:33:E4:49:05:51
Attempting to connect to D2:33:E4:49:05:51

I able to pair with my mobile but not able to connect

I am using Bluetooth 5.0 (Classic as well as LE).

Re: /dev/ttyLP1 is not created for Bluetooth

igorpadykov — Fri, 15 Oct 2021 14:54:12 GMT

one can look for example on

https://variwiki.com/index.php?title=IMX_Bluetooth

https://variwiki.com/index.php?title=IMX_BLE

Best regards
igor

Re: /dev/ttyLP1 is not created for Bluetooth

vinothkumars — Fri, 10 Dec 2021 13:24:19 GMT

The issue is resolved long time back. To connect with devices we should add the services like audio and file transfer (ex: pactl, obexftp)

Re: /dev/ttyLP1 is not created for Bluetooth

Jose1985 — Sat, 29 Jan 2022 17:20:53 GMT

Hi @vinothkumars ,

I hope you were able to add 8997 module with iMX8QM MEK board. Can you help me how you made Bluetooth working using 8997 pcie module?

Best regards,

Jose1985

Re: /dev/ttyLP1 is not created for Bluetooth

josephzhou1 — Sun, 30 Jan 2022 04:51:55 GMT

yes