WLAN errors on boot and after boot, Wi-Fi is not working

[Juzujka]

During the boot and three times after the boot I got in the console messages:

[   24.089010] dhd_open: Enter ffffffc0dcbd5000
[   24.089419] 
[   24.089419] Dongle Host Driver, version 1.579.77.41.2 (r)
[   24.090038] wl_android_wifi_on in 1
[   24.090365] wl_android_wifi_on in 2: g_wifi_on=0
[   24.090786] wifi_platform_set_power = 1
[   24.091136] ======== PULL WL_REG_ON(-1) HIGH! ========
[   24.091605] [WLAN_RFKILL]: rockchip_wifi_power: 1
[   24.092125] [WLAN_RFKILL]: wifi turn on power. -1
[   24.396183] sdio_reset_comm():
[   24.412326] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[   24.432018] mmc_host mmc2: Bus speed (slot 0) = 100000Hz (slot req 100000Hz, actual 100000HZ div = 0)
[   24.493068] sdio_read_cis: 5 callbacks suppressed
[   24.493510] mmc2: queuing unknown CIS tuple 0x80 (2 bytes)
[   24.500225] mmc2: queuing unknown CIS tuple 0x80 (3 bytes)
[   24.506988] mmc2: queuing unknown CIS tuple 0x80 (3 bytes)
[   24.518871] mmc2: queuing unknown CIS tuple 0x80 (7 bytes)
[   24.533432] mmc2: queuing unknown CIS tuple 0x81 (9 bytes)
[   24.747401] mmc_host mmc2: Bus speed (slot 0) = 200000000Hz (slot req 200000000Hz, actual 200000000HZ div = 0)
[   24.852774] dwmmc_rockchip fe310000.dwmmc: Successfully tuned phase to 101
[   24.853471] sdioh_start: set sd_f2_blocksize 256
[   24.854487] 
[   24.854487] 
[   24.854487] dhd_bus_devreset: == WLAN ON ==
[   24.855325] F1 signature read @0x18000000=0x15294345
[   24.860348] F1 signature OK, socitype:0x1 chip:0x4345 rev:0x9 pkg:0x2
[   24.861763] DHD: dongle ram size is set to 819200(orig 819200) at 0x198000
[   24.862465] dhd_bus_set_default_min_res_mask: Unhandled chip id
[   24.863245] dhd_conf_read_config: Ignore config file /system/etc/firmware/config.txt
[   24.864064] Final fw_path=/system/etc/firmware/fw_bcm43456c5_ag.bin
[   24.864626] Final nv_path=/system/etc/firmware/nvram_ap6256.txt
[   24.865161] Final clm_path=/system/etc/firmware/clm_bcmdhd.blob
[   24.865696] Final conf_path=/system/etc/firmware/config.txt
[   24.866198] dhd_set_bus_params: set use_rxchain 0
[   24.866630] dhd_set_bus_params: set txglomsize 36
[   24.867717] dhdsdio_download_code_file: Open firmware file failed /system/etc/firmware/fw_bcm43456c5_ag.bin
[   24.868683] _dhdsdio_download_firmware: dongle image file download failed
[   24.869331] dhd_bus_devreset Failed to download binary to the dongle
[   24.869920] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   24.870402] dhd_wl_ioctl: returning as busstate=0
[   24.870836] dhd_dbg_detach_pkt_monitor, 2204
[   24.871224] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   24.871752] wifi_platform_set_power = 0
[   24.872220] ======== PULL WL_REG_ON(-1) LOW! ========
[   24.872693] [WLAN_RFKILL]: rockchip_wifi_power: 0
[   24.873174] [WLAN_RFKILL]: wifi shut off power.
[   24.873594] wl_android_wifi_on: Failed
[   24.873960] dhd_open : wl_android_wifi_on failed (-35)
[   24.874441] dhd_stop: Enter ffffffc0dcbd5000
[   24.874849] wl_android_wifi_off in 1
[   24.875188] wl_android_wifi_off in 2: g_wifi_on=0, on_failure=1
[   24.875748] dhd_wl_ioctl: returning as busstate=0
[   24.876268] dhd_dbg_detach_pkt_monitor, 2204
[   24.876692] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   24.877193] sdioh_disable_func_intr: error for read SDIO_CCCR_IENx : 0xffffff92
[   24.877844] wifi_platform_set_power = 0
[   24.878182] ======== PULL WL_REG_ON(-1) LOW! ========
[   24.878635] [WLAN_RFKILL]: rockchip_wifi_power: 0
[   24.879060] [WLAN_RFKILL]: wifi shut off power.
[   24.879466] wl_android_wifi_off out
[   24.879808] dhd_stop: Exit
[   24.880115] dhd_open: Exit ret=-1
[   24.881726] dhd_open: Enter ffffffc0dcbd5000
[   24.882131] 
[   24.882131] Dongle Host Driver, version 1.579.77.41.2 (r)
[   24.882735] wl_android_wifi_on in 1
[   24.883051] wl_android_wifi_on in 2: g_wifi_on=0
[   24.883459] wifi_platform_set_power = 1
[   24.883798] ======== PULL WL_REG_ON(-1) HIGH! ========
[   24.884377] [WLAN_RFKILL]: rockchip_wifi_power: 1
[   24.884802] [WLAN_RFKILL]: wifi turn on power. -1
[   25.188364] sdio_reset_comm():
[   25.204359] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[   25.224084] mmc_host mmc2: Bus speed (slot 0) = 100000Hz (slot req 100000Hz, actual 100000HZ div = 0)
[   25.286929] mmc2: queuing unknown CIS tuple 0x80 (2 bytes)
[   25.293718] mmc2: queuing unknown CIS tuple 0x80 (3 bytes)
[   25.300488] mmc2: queuing unknown CIS tuple 0x80 (3 bytes)
[   25.312329] mmc2: queuing unknown CIS tuple 0x80 (7 bytes)
[   25.326807] mmc2: queuing unknown CIS tuple 0x81 (9 bytes)
[   25.539699] mmc_host mmc2: Bus speed (slot 0) = 200000000Hz (slot req 200000000Hz, actual 200000000HZ div = 0)
[   25.740703] dwmmc_rockchip fe310000.dwmmc: Successfully tuned phase to 101
[   25.741399] sdioh_start: set sd_f2_blocksize 256
[   25.742311] 
[   25.742311] 
[   25.742311] dhd_bus_devreset: == WLAN ON ==
[   25.743148] F1 signature read @0x18000000=0x15294345
[   25.748259] F1 signature OK, socitype:0x1 chip:0x4345 rev:0x9 pkg:0x2
[   25.749769] DHD: dongle ram size is set to 819200(orig 819200) at 0x198000
[   25.750473] dhd_bus_set_default_min_res_mask: Unhandled chip id
[   25.751255] dhd_conf_read_config: Ignore config file /system/etc/firmware/config.txt
[   25.752078] Final fw_path=/system/etc/firmware/fw_bcm43456c5_ag.bin
[   25.752653] Final nv_path=/system/etc/firmware/nvram_ap6256.txt
[   25.753188] Final clm_path=/system/etc/firmware/clm_bcmdhd.blob
[   25.753722] Final conf_path=/system/etc/firmware/config.txt
[   25.754225] dhd_set_bus_params: set use_rxchain 0
[   25.754656] dhd_set_bus_params: set txglomsize 36
[   25.755685] dhdsdio_download_code_file: Open firmware file failed /system/etc/firmware/fw_bcm43456c5_ag.bin
[   25.756749] _dhdsdio_download_firmware: dongle image file download failed
[   25.757438] dhd_bus_devreset Failed to download binary to the dongle
[   25.758018] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   25.758501] dhd_wl_ioctl: returning as busstate=0
[   25.758935] dhd_dbg_detach_pkt_monitor, 2204
[   25.759324] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   25.759852] wifi_platform_set_power = 0
[   25.760331] ======== PULL WL_REG_ON(-1) LOW! ========
[   25.760790] [WLAN_RFKILL]: rockchip_wifi_power: 0
[   25.761276] [WLAN_RFKILL]: wifi shut off power.
[   25.761687] wl_android_wifi_on: Failed
[   25.762029] dhd_open : wl_android_wifi_on failed (-35)
[   25.762499] dhd_stop: Enter ffffffc0dcbd5000
[   25.762885] wl_android_wifi_off in 1
[   25.763213] wl_android_wifi_off in 2: g_wifi_on=0, on_failure=1
[   25.763751] dhd_wl_ioctl: returning as busstate=0
[   25.764247] dhd_dbg_detach_pkt_monitor, 2204
[   25.764652] dhd_net_bus_devreset: dhd_bus_devreset: -35
[   25.765207] sdioh_disable_func_intr: error for read SDIO_CCCR_IENx : 0xffffff92
[   25.765865] wifi_platform_set_power = 0
[   25.766217] ======== PULL WL_REG_ON(-1) LOW! ========
[   25.766673] [WLAN_RFKILL]: rockchip_wifi_power: 0
[   25.767114] [WLAN_RFKILL]: wifi shut off power.
[   25.767522] wl_android_wifi_off out
[   25.768057] dhd_stop: Exit
[   25.768325] dhd_open: Exit ret=-1

During the build I've got warnings:
WARNING: .../meta-radxa/recipes-connectivity/bluetooth/bluetooth-rockpi-s.bb: Unable to get checksum for bluetooth-rockpi-s SRC_URI entry install-module-hci-uart.service: file could not be found
WARNING: .../meta-radxa/recipes-connectivity/bluetooth/bluetooth-rockpi-s.bb: Unable to get checksum for bluetooth-rockpi-s SRC_URI entry rtl8723ds-btfw-load.service: file could not be found
WARNING: .../meta-radxa/recipes-connectivity/bluetooth/bluetooth-rockpi-s.bb: Unable to get checksum for bluetooth-rockpi-s SRC_URI entry install_module_hci_uart: file could not be found
WARNING: .../meta-radxa/recipes-connectivity/bluetooth/bluetooth-rockpi-e.bb: Unable to get checksum for bluetooth-rockpi-e SRC_URI entry blacklist-bt.conf: file could not be found

[Juzujka]

/system/etc/firmware/ folder is missed