[MTCD Android Head Units General] Xoubir:
I think have isolated the corresponding errors for the wifi chip activation in the dmesg log file :

Error is that one (rtl88x2cs being the driver for the RTL8822CS wlan/bt chip) :

[ 845.098810] rtl88x2cs mmc0:0001:1: rtw_sdio_raw_write: sdio write failed (-110)
[ 845.098817] rtl88x2cs mmc0:0001:1: rtw_sdio: WRITE use CMD53
[ 845.098822] rtl88x2cs mmc0:0001:1: rtw_sdio: WRITE to 0x00014, 4 bytes
[ 845.098826] rtw_sdio: WRITE 00000000: 07 07 01 00
[ 845.098992] WARNING: CPU: 5 PID: 101 at drivers/net/wireless/rockchip_wlan/rtl8822cs/os_dep/linux/sdio_ops_linux.c:1329 rtw_sdio_raw_write+0x1b0/0x2dc [8822cs]
[ 845.098995] Modules linked in: 8822cs aic8800_bsp
[ 845.099003] CPU: 5 PID: 101 Comm: kworker/5:2 Tainted: G W 4.19.111+ #271
[ 845.099006] Hardware name: Rockchip RK3399 HCT Board (DT)
[ 845.099014] Workqueue: events_freezable mmc_rescan
[ 845.099019] pstate: 60400005 (nZCv daif +PAN -UAO)
[ 845.099088] pc : rtw_sdio_raw_write+0x1b0/0x2dc [8822cs]
[ 845.099158] lr : rtw_sdio_raw_write+0x1b0/0x2dc [8822cs]
[ 845.099162] sp : ffffff800a92b7e0
[ 845.099165] x29: ffffff800a92b7e0 x28: <private info omitted>0
[ 845.099169] x27: <private info omitted>1 x26: ffffffc04489a000
[ 845.099174] x25: <private info omitted>0 x24: ffffffc07237f980
[ 845.099178] x23: <private info omitted>4 x22: ffffffc07237f980
[ 845.099182] x21: <private info omitted>4 x20: ffffffc022245800
[ 845.099187] x19: <private info omitted>4 x18: ffffffffffffffff
[ 845.099191] x17: <private info omitted>0 x16: <private info omitted>0
[ 845.099195] x15: ffffff800974da48 x14: ffffff8089908e6f
[ 845.099199] x13: ffffff8009908e7d x12: ffffff80099092ba
[ 845.099203] x11: ffffff800976e000 x10: 0000000005f5e0ff
[ 845.099208] x9 : 00000000ffffffd0 x8 : 2d2d2d2d2d2d2d2d
[ 845.099212] x7 : <private info omitted>0 x6 : 0000000000000fbe
[ 845.099216] x5 : <private info omitted>0 x4 : <private info omitted>0
[ 845.099221] x3 : ffffffffffffffff x2 : 4b5c3a83ba8c4f00
[ 845.099224] x1 : <private info omitted>0 x0 : <private info omitted>4

Corresponding kernel call stack :

[ 845.100519] Call trace:
[ 845.100588] rtw_sdio_raw_write+0x1b0/0x2dc [8822cs]
[ 845.100656] sdio_io+0x88/0x138 [8822cs]
[ 845.100722] rtw_sdio_write_cmd53+0x14/0x1c [8822cs]
[ 845.100794] _halmac_sdio_reg_write_32+0x4c/0x68 [8822cs]
[ 845.100862] reg_w32_sdio_8822c+0x160/0x188 [8822cs]
[ 845.100930] mac_pwr_switch_sdio_8822c+0x200/0x2c4 [8822cs]
[ 845.101011] rtw_halmac_poweron+0x4c/0xd0 [8822cs]
[ 845.101086] rtl8822c_power_on+0x48/0x98 [8822cs]
[ 845.101165] rtw_hal_power_on+0x20/0x58 [8822cs]
[ 845.101243] rtw_hal_read_chip_info+0x44/0x90 [8822cs]
[ 845.101320] rtw_sdio_primary_adapter_init+0x110/0x15c [8822cs]
[ 845.101396] rtw_drv_init+0x8c/0x160 [8822cs]
[ 845.101407] sdio_bus_probe+0x108/0x130
[ 845.101420] really_probe+0x200/0x2b0
[ 845.101431] driver_probe_device+0x58/0x100
[ 845.101442] __device_attach_driver+0x90/0xc0
[ 845.101454] bus_for_each_drv+0x70/0xc8
[ 845.101465] __device_attach+0xdc/0x138
[ 845.101476] device_initial_probe+0x10/0x18
[ 845.101488] bus_probe_device+0x94/0xa0
[ 845.101499] device_add+0x428/0x6d8
[ 845.101507] sdio_add_func+0x60/0x88
[ 845.101511] mmc_attach_sdio+0x1b4/0x370
[ 845.101516] mmc_rescan+0x298/0x388
[ 845.101521] process_one_work+0x1a0/0x418
[ 845.101526] worker_thread+0x4c/0x3e0
[ 845.101530] kthread+0x12c/0x158
[ 845.101534] ret_from_fork+0x10/0x18

My specs : PX6 (Dasaita's MTCH)

[ 0.000000] Linux version 4.19.111+ (chun@r930) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)) #271 SMP PREEMPT Sat Jan 8 17:33:05 CST 2022
[ 0.000000] Machine model: Rockchip RK3399 HCT Board

Not sure though if this points towards a software or hardware issue though :s