driver wilc1000 for kernel 4.14.98

[DomenicoAcri]

Hi, I'm using an NXP imx8m mini processor, and we connected the ATWILC1000 module on the SDIO interface. I'm using the 4.14.98 kernel and when I load the driver it gives me the following output:

insmod wilc1000-sdio.ko [35.225950] wilc1000_sdio: module is from the staging directory, the quality is unknown, you have been warned. [35.246083] wilc1000_sdio mmc1: 0001: 1: Driver Initializing success

ifconfig wlan0 up [54.458111] wilc1000_sdio mmc1: 0001: 1: chipid (c0802221) [54.463459] wilc1000_sdio mmc1: 0001: 1: has_thrpt_enh3 = 0 ... [54.470250] wilc1000_sdio mmc1: 0001: 1 wlan0: loading firmware atmel / wilc1002_firmware.bin [54.478522] wilc1000_sdio mmc1: 0001: 1: Falling back to user helper [54.487556] wilc1000_sdio mmc1: 0001: 1 wlan0: atmel / wilc1002_firmware.bin - firmware not available [54.497183] wilc1000_sdio mmc1: 0001: 1 wlan0: WLAN initialization FAILED [54.503881] wilc1000_sdio mmc1: 0001: 1 wlan0: Failed to set driver handler [54.510771] wilc1000_sdio mmc1: 0001: 1 wlan0: Host cmd 24 failed [54.516727] wilc1000_sdio mmc1: 0001: 1 wlan0: [Host Interface] undefined SIOCSIFFLAGS: Input / output error

the firmware seems to be missing, where can I find it? Is this the correct driver to load?

Best Regards Domenico Acri

[ajaykathat]

FW can be downloaded from https://github.com/linux4wilc/firmware repo. For wilc1000, use wilc1000_wifi_firmware.bin FW binary.

The link to 15.3.1 driver & FW is below: FW-> https://github.com/linux4wilc/firmware/tree/wilc_linux_15_3_1 Driver -> https://github.com/linux4wilc/driver/tree/wilc_linux_15_3_1

[DomenicoAcri]

Hi, thanks a lot for the answer. I integrated the driver and firmware, but it gives this error:

insmod wilc-sdio.ko [ 71.928370] Registering wifi device [ 71.931969] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844 [ 71.940135] Initializing Locks ... [ 71.945659] wifi_pm : 0 [ 71.948149] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default [ 71.955071] wifi_pm : 1 [ 71.957595] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default [ 71.971026] wilc_sdio mmc1:0001:1: Driver Initializing success

ifconfig wlan0 up [ 87.193039] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff8000109fc000] wlan0 [ 87.201638] WILC POWER UP [ 87.204264] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff8000109fc000][ffff8000109fdce8] [ 87.213954] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open] re-init [ 87.221038] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan [ 87.228816] wilc_sdio mmc1:0001:1: SDIO speed: 25000000 [ 87.242136] wilc_sdio mmc1:0001:1: Unsupported chipid: 0 [ 87.247512] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED [ 87.256764] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc SIOCSIFFLAGS: Input/output error

This is my device tree:

/ WIFI / &usdhc2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_atwilc1000>; bus-width = <4>; no-1-8-v; max-frequency = <25000000>; non-removable; status = "okay";

wilc_sdio@0{
        compatible = "microchip,wilc1000", "microchip,wilc3000";
        reset-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
        chip_en-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
        irq-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
        status = "okay";
        reg = <0>;
        bus-width = <4>;
};

};

pinctrl_atwilc1000: atwilc1000grp { fsl,pins = < MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x19 / WIFI_REGON / MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10 0x19 / WIFI_NRST / MX8MM_IOMUXC_GPIO1_IO08_GPIO1_IO8 0x1C0 / WIFI_IRQN /

; };

Best Regards Domenico Acri

[ajaykathat]

From the logs, it appears that the driver fails to get 'reset' GPIO using gpiod_get() API. During failure, it tries to load a default GPIO 'GPIO_NUM_RESET' which may be not correct in your codebase.

"wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default"

Please check and try by configuring with correct available GPIO for reset.

[DomenicoAcri]

Hi, yes I suspected it. So I went to change the default GPIOs in the wilc_wlan.h file as follows:

define GPIO_NUM 8

define GPIO_NUM_CHIP_EN 3

define GPIO_NUM_RESET 10

this is the output:

insmod wilc-sdio.ko [ 100.647908] Registering wifi device [ 100.651410] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844 [ 100.659584] Initializing Locks ... [ 100.665204] wifi_pm : 0 [ 100.667688] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default [ 100.674623] wifi_pm : 1 [ 100.677162] wilc_sdio mmc1:0001:1: succesfully got gpio_reset [ 100.683088] wilc_sdio mmc1:0001:1: succesfully got gpio_chip_en [ 100.695940] wilc_sdio mmc1:0001:1: Driver Initializing success ~# ifconfig wlan0 up [ 108.771614] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff800010974000] wlan0 [ 108.780190] WILC POWER UP [ 108.782815] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff800010974000][ffff800010975ce8] [ 108.792510] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open] re-init [ 108.799597] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan [ 108.807379] wilc_sdio mmc1:0001:1: SDIO speed: 25000000 [ 108.820286] wilc_sdio mmc1:0001:1: wilc_sdio_cmd52..failed, err(-110) [ 108.826747] wilc_sdio mmc1:0001:1: Fail cmd 52, enable csa... [ 108.832563] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED [ 108.841823] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc SIOCSIFFLAGS: Input/output error

there still seems to be a problem.

Best Regards Domenico Acri

[ajaykathat]

The logs look a bit strange for fetching reset GPIO because the next call for wilc_wlan_power() it was able to fetch reset from your Device tree. The below logs were missing for the next call to wilc_wlan_power().

[ 100.665204] wifi_pm : 0 [ 100.667688] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default [ 100.674623] wifi_pm : 1

So still I suspect the reset GPIO is not configured properly for the proper pwr sequence of WILC device.

Please try commenting out below code in wilc_wlan_power_on_sequence() and check the behavior after a hard reset?

int wilc_wlan_power_on_sequence(struct wilc *wilc)
{
#if 0
    int ret;

    ret = wilc_wlan_power(wilc, 0);
    if (ret)
        return ret;
    ret = wilc_wlan_power(wilc, 1);
    if (ret)
        return ret;
#endif
    return 0;
}

[DomenicoAcri]

Hi, with the last modification this is the output:

~# insmod wilc-sdio.ko [ 18.901985] Registering wifi device [ 18.905506] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844 [ 18.913672] Initializing Locks ... [ 18.918858] wilc_sdio mmc1:0001:1: Driver Initializing success

~# ifconfig wlan0 up [ 25.608816] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff8000102cc000] wlan0 [ 25.617397] WILC POWER UP [ 25.620059] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff8000102cc000][ffff8000102cdce8] [ 25.629745] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open] re-init [ 25.636826] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan [ 25.644651] wilc_sdio mmc1:0001:1: SDIO speed: 25000000 [ 25.657920] wilc_sdio mmc1:0001:1: Unsupported chipid: 0 [ 25.663262] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED [ 25.672512] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc SIOCSIFFLAGS: Input/output error

Best Regards Domenico Acri

[ajaykathat]

I suspect the issue could be related to power_sequence not triggered from host to WILC device. I hope you have tried by rebooting the host by removing power cable too. If you still observe the issue, I suggest submitting a case in salesforce with host setup details used to connect WILC device.