WiFi Enabling in iMX6ULL

[mathew_k_t]

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?

[igorpadykov]

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
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[mathew_k_t]

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....?

[igorpadykov]

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