bq25890_probe problems with the charger driver

that's what I see on the devkit from time to time:
[    5.694066] bq25890-charger 0-006b: Failed to register power supply
[    5.704976] Unable to handle kernel NULL pointer dereference at virtual address 00000000000001a3
[    5.713769] Mem abort info:
[    5.716565]   ESR = 0x96000021
[    5.719619]   EC = 0x25: DABT (current EL), IL = 32 bits
[    5.724933]   SET = 0, FnV = 0
[    5.727987]   EA = 0, S1PTW = 0
[    5.731127]   FSC = 0x21: alignment fault
[    5.735137] Data abort info:
[    5.738037]   ISV = 0, ISS = 0x00000021
[    5.741879]   CM = 0, WnR = 0
[    5.744848] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000045cc3000
[    5.751291] [00000000000001a3] pgd=0000000000000000, p4d=0000000000000000
[    5.758090] Internal error: Oops: 96000021 [#1] PREEMPT SMP
[    5.763668] Modules linked in: bq25890_charger(+) snvs_pwrkey caam(+) error snd(+) imx2_wdt imx_sdma 
soundcore virt_dma watchdog libcomposite ledtrig_timer ledtrig_pattern fuse ip_tables x_tables ipv6 xhci
_plat_hcd xhci_hcd usbcore cdns_mhdp_imx dwc3 cdns_mhdp_drmcore imx_dcss phy_fsl_imx8mq_usb ulpi udc_cor
e roles clk_bd718x7
[    5.792713] CPU: 0 PID: 354 Comm: irq/151-bq25890 Not tainted 5.15.0-rc2-librem5-00216-g8143f015362c 
#402
[    5.792727] Hardware name: Purism Librem 5 devkit (DT)
[    5.792732] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    5.792742] pc : _raw_write_lock_irqsave+0x260/0x324
[    5.792761] lr : power_supply_changed+0x38/0xb0
[    5.792774] sp : ffff8000131fbcf0
[    5.792778] x29: ffff8000131fbcf0 x28: 0000000000000000 x27: 0000000000000000
[    5.792792] x26: ffff8000100b6bf0 x25: ffff8000100b6cd0 x24: ffff0000009ebe00
[    5.792804] x23: 0000000000000001 x22: fffffffffffffe33 x21: 00000000000001a3
[    5.792816] x20: ffff0000013faf53 x19: 0000000000000000 x18: 0000000000000000
[    5.792828] x17: ffff8000ae7d5000 x16: ffff800010004000 x15: 0000000000004000
[    5.792840] x14: 0000000000000001 x13: 6c616d726f6e2065 x12: 746174732043544e
[    5.792853] x11: ffff80001158b180 x10: 00000000ffffe000 x9 : ffff800010933d28
[    5.792865] x8 : ffff8000114db180 x7 : ffff80001158b180 x6 : 0000000000000000
[    5.792877] x5 : 0000000000000000 x4 : ffff0000bf942948 x3 : 00000000000001a3
[    5.792889] x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001
[    5.792902] Call trace:
[    5.792906]  _raw_write_lock_irqsave+0x260/0x324
[    5.792915]  power_supply_changed+0x38/0xb0
[    5.792924]  __bq25890_handle_irq+0x98/0x240 [bq25890_charger]
[    5.792945]  bq25890_irq_handler_thread+0x34/0x54 [bq25890_charger]
[    5.792959]  irq_thread_fn+0x38/0xb0
[    5.792970]  irq_thread+0x160/0x294
[    5.792977]  kthread+0x15c/0x170
[    5.792986]  ret_from_fork+0x10/0x20
[    5.793001] Code: 17fffea8 d5384613 521b0a60 f9800071 (885ffc60) 
[    5.793008] ---[ end trace 8e139fd812ccd9ed ]---
see the discussions in https://source.puri.sm/Librem5/linux-next/-/merge_requests/468
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bq25890_probe problems with the charger driver
