5 Replies Latest reply on Dec 22, 2019 6:13 PM by ZhengbaoZ_96

    Murata 1MW with IMX6UL on Linux, Blueooth Initiliastion timing out




      I'm trying to use the Murata 1MW module on a custom board with an NXP IMX6UL. I'm using Yocto, so I've added the meta-murata-wireless layer into my build. I've got the wi-fi working but I'm having trouble with the Bluetooth side of the part.


      When I go to inilitialise it using this command:

      hciattach /dev/ttymxc2 bcm43xx 3000000 flow -t 20

      I get:


      Initialization timed out.

      I've tried a 115200 as a baud rate but it makes no difference.

      I'm a little lost of what can cause this sort of problem.


      Here's an excerpt of the relevants parts of my device tree:

      bluetooth_reset: bluetooth-reset {

           compatible = "gpio-reset";



           reset-gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;

           reset-delay-us = <1000>;

           #reset-cells = <0>;



      &uart3 {

          pinctrl-names = "default";

          pinctrl-0 = <&pinctrl_uart3>;

          resets = <&bluetooth_reset>;

          status = "okay";

          /delete-property/ dmas;

          /delete-property/ dma-names;





      What can cause this sort of problem?