wifi can not work normaly in L3.14

[chengsi]

Hi,

>>I am using bcm43438 in our customer imx7d board with Linux3.14.

The  wifi firmware I use is "brcmfmac43430-sdio.bin" and "brcmfmac43430-sdio.txt" from raspberry pi, when use "modprobe bcmdhd firmware_path=/lib/firmware/bcm/BCM43430/brcmfmac43430-sdio.bin nvram_path=/lib/firmware/bcm/BCM43430/brcmfmac43430-sdio.txt dhd_meg_level=0x1" i get the message:

dhd_module_init in

Power-up adapter 'DHD generic adapter'

wifi_platform_bus_enumerate device present 1

mmc0: new high speed SDIO card at address 0001

F1 signature OK, socitype:0x1 chip:0xa9a6 rev:0x1 pkg:0x4

DHD: dongle ram size is set to 524288(orig 524288) at 0x0

wifi_platform_get_mac_addr

CFG80211-ERROR) wl_setup_wiphy : Registering Vendor80211)

wl_create_event_handler(): thread:wl_event_handler:16e started

CFG80211-ERROR) wl_event_handler : tsk Enter, tsk = 0xa8d0141c

dhd_attach(): thread:dhd_watchdog_thread:16f started

dhd_attach(): thread:dhd_dpc:170 started

dhd_deferred_work_init: work queue initialized

dhdsdio_write_vars: Download, Upload and compare of NVRAM succeeded.

dhd_bus_init: enable 0x06, ready 0x06 (waited 0us)

wifi_platform_get_mac_addr

Firmware up: op_mode=0x0005, MAC=00:90:4c:c5:12:38

Firmware version = wl0: May 27 2016 00:13:38 version 7.45.41.26 (r640327) FWID 01-df77e4a7

dhd_wlfc_init(): successfully enabled bdcv2 tlv signaling, 79

dhd_wlfc_init: query wlfc_mode succeed, fw_caps=0x1c

dhd_wlfc_init(): wlfc_mode=0x1c, ret=0

Dongle Host Driver, version 1.141.72 (r)

Compiled from

Register interface [wlan0] MAC: 00:90:4c:c5:12:38

>>It seems the driver is loaded successfully, so I use try to start the wifi:

root#ifconfig wlan0 up

root#ifconfig

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1%1995585232/128 Scope:Host

UP LOOPBACK RUNNING MTU:65536 Metric:1

RX packets:4 errors:0 dropped:0 overruns:0 frame:0

TX packets:4 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:240 (240.0 B) TX bytes:240 (240.0 B)

wlan0 Link encap:Ethernet HWaddr 00:90:4C:C5:12:38

inet6 addr: fe80::290:4cff:fec5:1238%1995585232/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:0 errors:0 dropped:0 overruns:0 frame:0

TX packets:15 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:0 (0.0 B) TX bytes:2778 (2.7 KiB)

>>so it seems the wifi module start correctly, but when i try to scan for AP, it get nothing:

root#iw dev wlan0 scan

root#

root#iwlist wlan0 scan

wlan0  Interface doesn't support scanning.

root#

>>here is my dts, please give me some advise, do I need modify the bdmdhd driver or change the firmware?

bcmdhd_wlan_0: bcmdhd_wlan@0 {
compatible = "android,bcmdhd_wlan";
/* WL_HOST_WAKE=GPIO<5,2>, WL_REG_ON=GPIO<5,1> */
gpios = <&gpio5 2 0>;
wlreg_on-supply = <&wlreg_on>;
};regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;wlreg_on: fixedregulator@100 {
compatible = "regulator-fixed";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "wlreg_on";
gpio = <&gpio5 1 0>;
startup-delay-us = <100>;
enable-active-high;
};
};

/*wifi*/
&usdhc1 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc1>;
pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
cd-gpios = <&gpio7 6 GPIO_ACTIVE_HIGH>;
/*cd-post;*/
bus-width = <4>;
no-1-8-v;
enable-sdio-wakeup;
keep-power-in-suspend;
non-removable;
pm-ignore-notify;
wifi-host; 
status = "okay";
};

pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
MX7D_PAD_SD1_CMD__SD1_CMD 0x59
MX7D_PAD_SD1_CLK__SD1_CLK 0x19
MX7D_PAD_SD1_DATA0__SD1_DATA0 0x59
MX7D_PAD_SD1_DATA1__SD1_DATA1 0x59
MX7D_PAD_SD1_DATA2__SD1_DATA2 0x59
MX7D_PAD_SD1_DATA3__SD1_DATA3 0x59
MX7D_PAD_SD1_WP__GPIO5_IO1 0x59
>;
};

[igorpadykov]

Hi Cheng

one can try attached patch, but i.MX7D supported in L3.14.52 kernel with beta quality,

suggest to migrate to latest L4.1.xx kernels described on link

http://www.nxp.com/products/software-and-tools/software-development-tools/i.mx-software-and-tools/i....

Best regards
igor
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[chengsi]

hi igorpadykov,

I have tried the patch, but the result is same,  when i use "iw dev wlan0 scan", it still get nothing , and i can not connect to any wifi.

As i can see, the firemware is named "brcmfmac", does it mean i should use brcmfmac driver?

[igorpadykov]

Linux 3.14 is very old kernel, for its support please apply to Murata support link
wireless.murata.com/eng/products/rf-modules-1/wi-fi-bluetooth-for-freescale-i-mx.html
or use latest bsps described on

i.MX 6 / i.MX 7 Series Software and Development Tool|NXP 

Best regards
igor

[chengsi]

Hi  igorpadykov,

  I have tried the latest kernel 4.1.42 from freescale github, but the result is the same. when i try to scan for aps, it still return nothing, and can not connect to my ap.

   I think maybe the driver or the cmd i use is wrong or too old?