WILC3000 : Failed reset after firmware loaded

[guilig]

Hello,

We have a custom board based on iMX6 with Wilc3000 link by SPI. Kernel is 5.4

Our devicetree is :
&ecspi3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi3_wilc>;
status = "okay";
num-cs = <1>;
cs-gpios = <&gpio4 12 GPIO_ACTIVE_LOW>;

wilc_spi@0 {
    compatible = "microchip,wilc1000", "microchip,wilc3000";
    spi-max-frequency = <24000000>;
    reg = <0>;
    irq-gpios = <&gpio4 24 GPIO_ACTIVE_HIGH>;
    reset-gpios = <&gpio4 22 GPIO_ACTIVE_HIGH>; 
    chip_en-gpios = <&gpio4 23 GPIO_ACTIVE_HIGH>;
    status = "okay";
};

};

After load the firmware on the wilc, the driver shows this error :

[ 48.491056] WILC_SPI spi2.0 wlan0: INFO [wilc_mac_open]MAC OPEN[5a4a6b63] wlan0
[ 48.498406] WILC POWER UP
[ 48.507819] WILC_SPI spi2.0 wlan0: INFO [wilc_init_host_int]Host[5a4a6b63][f4a8db24]
[ 48.519121] WILC_SPI spi2.0 wlan0: INFO [wilc_mac_open]*** re-init ***
[ 48.529351] WILC_SPI spi2.0 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan
[ 48.541399] WILC_SPI spi2.0 wlan0: INFO [init_chip]Bootrom sts = c
[ 48.547861] WILC_SPI spi2.0 wlan0: INFO [wilc_wlan_initialize]WILC Initialization done
[ 48.560299] WILC_SPI spi2.0 wlan0: INFO [wlan_initialize_threads]Initializing Threads ...
[ 48.568518] WILC_SPI spi2.0 wlan0: INFO [wlan_initialize_threads]Creating kthread for transmission
[ 48.586411] WILC_SPI spi2.0 wlan0: INFO [wlan_initialize_threads]Creating kthread for Debugging
[ 48.599020] WILC_SPI spi2.0: got gpio_irq successfully
[ 48.608519] WILC_SPI spi2.0 wlan0: INFO [init_irq]IRQ request succeeded IRQ-NUM= 172
[ 48.619892] WILC_SPI spi2.0 wlan0: INFO [wilc_wlan_get_firmware]Detect chip WILC3000
[ 48.631444] WILC_SPI spi2.0 wlan0: INFO [wilc_wlan_get_firmware]loading firmware mchp/wilc3000_wifi_firmware.bin
[ 48.645330] WILC_SPI spi2.0 wlan0: INFO [wilc_wlan_get_firmware]WLAN firmware: mchp/wilc3000_wifi_firmware.bin
[ 48.678540] WILC_SPI spi2.0 wlan0: INFO [wilc_firmware_download]Downloading Firmware ...
[ 48.686763] wilc_wlan_firmware_downloadDownloading firmware size = 140208
[ 48.857512] wilc_wlan_firmware_download Offset = 120764
[ 48.891428] wilc_wlan_firmware_download Offset = 140208
[ 48.896703] WILC_SPI spi2.0 wlan0: INFO [wilc_firmware_download]Download Succeeded
[ 48.908865] WILC_SPI spi2.0 wlan0: INFO [wilc_start_firmware]Starting Firmware ...
[ 48.921377] WILC_SPI spi2.0 wlan0: INFO [wilc_start_firmware]Waiting for FW to get ready ...
[ 49.020717] WILC_SPI spi2.0: buffer overrun when reading data.
[ 49.026591] WILC_SPI spi2.0: Failed cmd, read reg (00000001)...
[ 49.033899] WILC_SPI spi2.0: Failed cmd response, cmd (cf), resp (00)
[ 49.040471] WILC_SPI spi2.0: Failed cmd reset
[ 49.044853] WILC_SPI spi2.0: Reset and retry 10 1
[ 49.050858] WILC_SPI spi2.0: buffer overrun when reading data.
[ 49.056730] WILC_SPI spi2.0: Failed cmd, read reg (00000001)...
[ 49.064055] WILC_SPI spi2.0: Failed cmd response, cmd (cf), resp (00)
[ 49.070643] WILC_SPI spi2.0: Failed cmd reset
[ 49.075026] WILC_SPI spi2.0: Reset and retry 9 1
[ 49.080967] WILC_SPI spi2.0: buffer overrun when reading data.
[ 49.086841] WILC_SPI spi2.0: Failed cmd, read reg (00000001)...
[ 49.094218] WILC_SPI spi2.0: Failed cmd response, cmd (cf), resp (00)
[ 49.100800] WILC_SPI spi2.0: Failed cmd reset
[ 49.105181] WILC_SPI spi2.0: Reset and retry 8 1
[ 49.111112] WILC_SPI spi2.0: buffer overrun when reading data.
[ 49.116986] WILC_SPI spi2.0: Failed cmd, read reg (00000001)...
[ 49.124338] WILC_SPI spi2.0: Failed cmd response, cmd (cf), resp (00)

power management on the kernel config is disable.

Any sugestion ? or idea ?

Thanks for your help.