i.MX ProcessorsのトピックRe: WiFi Enabling in iMX6ULL

WiFi Enabling in iMX6ULL

mathew_k_t — Thu, 04 Oct 2018 04:03:22 GMT

Hi,

I'm trying to enable wifi in my imx6ull board. I'm using the Murata 1DX module(BT+WiFi).

As per Murata datasheet, I followed below commands to enable wifi,

stty rows 80 cols 132

export TERM=ansi

echo /lib/firmware/bcm/1DX_BCM4343W/fw_bcmdhd.bin > /sys/module/bcmdhd/parameters/firmware_path

echo /lib/firmware/bcm/1DX_BCM4343W/bcmdhd.1DX.SDIO.cal > /sys/module/bcmdhd/parameters/nvram_path

ifconfig wlan0 up ->for this below log is recieved,

Dongle Host Driver, version 1.141.92 (r)
Compiled in drivers/net/wireless/bcmdhd
wl_android_wifi_on in
mmc0: Error resetting SDIO communications (-110)
failed to power up wifi chip, retry again (4 left) **

mmc0: Error resetting SDIO communications (-110)

WLREG_ON pin is High.

How to resolve this issue?

Re: WiFi Enabling in iMX6ULL

igorpadykov — Thu, 04 Oct 2018 05:01:53 GMT

Hi mathew_k_t

one can check if correct dts files are used:

imx6ull-14x14-evk-btwifi.dts\dts\boot\arm\arch - linux-imx - i.MX Linux kernel

imx6ul-evk-btwifi.dtsi\dts\boot\arm\arch - linux-imx - i.MX Linux kernel

use linux wifi quick start guide from:

wireless.murata.com/eng/products/rf-modules-1/wi-fi-bluetooth-for-freescale-i-mx.html

In L4.9.88 kernel The CONFIG_BCM4339 performance optimization option is not

enabled by the default kernel, as mentioned in attached Release Notes p.19.

Best regards
igor
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Re: WiFi Enabling in iMX6ULL

mathew_k_t — Thu, 04 Oct 2018 05:36:17 GMT

Hi Igor,

The .dts files are correct except the wlreg_on GPIO.

I hope for bringing up wifi OOB patches are not required.

regulators {
       wlreg_on: fixedregulator@100 {
           compatible = "regulator-fixed";
           regulator-min-microvolt = <5000000>;
           regulator-max-microvolt = <5000000>;
           regulator-name = "wlreg_on";
           gpio = <&gpio1 4 0>;
           startup-delay-us = <100>;
           enable-active-high;
       };
   };

   bcmdhd_wlan_0: bcmdhd_wlan@0 {
       compatible = "android,bcmdhd_wlan";
       wlreg_on-supply = <&wlreg_on>;
   };
};

&iomuxc {
   imx6ul-evk-murata-v2 {
       pinctrl_wifi: wifigrp {
           fsl,pins = <
               MX6UL_PAD_GPIO1_IO04__GPIO1_IO04 0x4001b0b0
           >;
       };
   };
};

&reg_sd1_vmmc {
regulator-always-on;
};

&usdhc1 {
   pinctrl-names = "default";
   pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_wifi>;
   no-1-8-v;
   non-removable;
   cd-post;
   pm-ignore-notify;
   wifi-host; /* add hook for SD card detect mechanism for BCMDHD driver */
};

Can you find any errors in this configuration....?

Re: WiFi Enabling in iMX6ULL

igorpadykov — Thu, 04 Oct 2018 07:40:59 GMT

Hi mathew_k_t

what bsp used in the case, could you try with L4.1.15 where Murata 1DX

is default wifi driver.

Best regards
igor