[    1.223207] axp20x-i2c 0-0068: AXP20x variant AXP221 found
[    1.239095] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.249189] mmc0: new high speed SDHC card at address 59b4
[    1.253428] input: axp20x-pek as /devices/platform/soc@1c00000/1f03400.i2c/i2c-0/0-0068/axp221-pek/input/input0
[    1.254270] dcdc1: supplied by regulator-dummy
[    1.255545] dcdc2: supplied by regulator-dummy
[    1.256231] dcdc3: supplied by regulator-dummy
[    1.256919] dcdc4: supplied by regulator-dummy
[    1.257621] dcdc5: supplied by regulator-dummy
[    1.258322] dc1sw: supplied by vdd-3v0
[    1.259015] dc5ldo: supplied by vcc-dram
[    1.259710] aldo1: supplied by regulator-dummy
[    1.260402] aldo2: supplied by regulator-dummy
[    1.260983] vcc-gmac: Bringing 1800000uV into 2500000-2500000uV
[    1.261704] aldo3: supplied by regulator-dummy
[    1.262960] eldo1: supplied by vdd-3v0
[    1.263525] vdd-csi: Bringing 700000uV into 1800000-1800000uV
[    1.264270] eldo2: supplied by vdd-3v0
[    1.264965] eldo3: supplied by vdd-3v0
[    1.265660] dldo1: supplied by regulator-dummy
[    1.266367] dldo2: supplied by regulator-dummy
[    1.266932] avdd-csi: Bringing 700000uV into 2800000-2800000uV
[    1.267654] dldo3: supplied by regulator-dummy
[    1.268226] vcc-pb: Bringing 700000uV into 3300000-3300000uV
[    1.269535] dldo4: supplied by regulator-dummy
[    1.270240] rtc_ldo: supplied by regulator-dummy
[    1.270382] ldo_io0: supplied by regulator-dummy
[    1.271637] ldo_io1: supplied by regulator-dummy
[    1.272742] vcc-pm-cpus: Bringing 3800000uV into 1800000-1800000uV
[    1.274575] drivevbus: supplied by regulator-dummy
[    1.277343] axp20x-i2c 0-0068: AXP20X driver loaded
[    1.291861] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    1.397145] mmcblk0: mmc0:59b4 00000 14.9 GiB
[    1.401949] sunxi-mmc 1c11000.mmc: allocated mmc-pwrseq
[    1.402667]  mmcblk0: p1
[    1.433495] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    1.441599] pgd = 3f2bca3f
[    1.444331] [00000000] *pgd=00000000
[    1.447925] Internal error: Oops: 80000005 [#1] SMP ARM
[    1.453151] Modules linked in:
[    1.456218] CPU: 1 PID: 66 Comm: kworker/1:2 Not tainted 4.15.0-sunxi-dirty #57
[    1.463531] Hardware name: Allwinner sun6i (A31) Family
[    1.468771] Workqueue: events dbs_work_handler
[    1.473220] PC is at 0x0
[    1.475764] LR is at sun4i_a10_display_assert+0x50/0x58
[    1.480992] pc : [<00000000>]    lr : [<c0396908>]    psr: a0000013
[    1.487259] sp : ee92fdf4  ip : 60000013  fp : 2aea5400
[    1.492487] r10: 3c14dc00  r9 : ee92386c  r8 : c039140c
[    1.497715] r7 : 1406f400  r6 : 2aea5400  r5 : ef00cd00  r4 : ef00cc80
[    1.504244] r3 : 0000cd01  r2 : 2aea5400  r1 : 0e4e1c00  r0 : 00000000
[    1.510775] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    1.517912] Control: 10c5387d  Table: 4000406a  DAC: 00000051
[    1.523662] Process kworker/1:2 (pid: 66, stack limit = 0xcb23d3c9)
[    1.529932] Stack: (0xee92fdf4 to 0xee930000)
[    1.534294] fde0:                                              ef00cc80 2aea5400 3c14dc00
[    1.542481] fe00: ee9238c0 ee92386c 3c14dc00 c03914a4 00000000 ef00c380 016e3600 3c14dc00
[    1.550669] fe20: ee9238c0 ee92386c 3c14dc00 c03914a4 ef00cc80 2aea5400 00000000 ef00c380
[    1.558856] fe40: ee9238c0 ee92386c 3c14dc00 c0391848 ee9236c0 2aea5400 ee923840 ef7a1010
[    1.567043] fe60: ee9238c0 c0391878 ee938000 2aea5400 ee923840 c04ddb3c ee8f8200 ee8f82e8
[    1.575229] fe80: ee923740 ee9238ec 2aea5400 3c14dc00 00000000 ee8f8200 000afc80 c0a967d4
[    1.583416] fea0: 00000001 000afc80 00000000 00000000 ef7b84c0 c04e5db0 ee8f8200 00000000
[    1.591602] fec0: c0a967d4 c04e09c8 00000008 000f6180 000afc80 00000021 ee925100 ee8f8200
[    1.599788] fee0: 003aa700 00430800 ee925180 ee923b80 ee92e000 c04e4758 ee925138 00000000
[    1.607976] ff00: ee925104 ee8f8200 c0a4f9f4 00000000 ee92e000 c04e50ec ee925138 ef0da480
[    1.616163] ff20: ef7b84c0 00000000 ef7bb400 c0131ef4 00000008 c0a03d00 ef0da480 ef7b84c0
[    1.624348] ff40: ef0da498 00000008 c0a03d00 ef7b84d8 ee92e000 c0132ba8 ef0d4a40 00000000
[    1.632534] ff60: ffffe000 ef1662c0 ef0d4a40 00000000 ee92e000 ef0da480 c0132b70 ef091ee0
[    1.640721] ff80: ef1662dc c013773c ee92e000 ef0d4a40 c013761c 00000000 00000000 00000000
[    1.648906] ffa0: 00000000 00000000 00000000 c0107868 00000000 00000000 00000000 00000000
[    1.657092] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.665279] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 ffffffff ffffffff
[    1.673476] [<c0396908>] (sun4i_a10_display_assert) from [<3c14dc00>] (0x3c14dc00)
[    1.681053] Code: bad PC value
[    1.684164] ---[ end trace ce5e3dcca309c7d6 ]---
[    1.684588] hub 1-1:1.0: USB hub found
[    1.684701] hub 1-1:1.0: 4 ports detected
[    1.696639] sunxi-mmc 1c11000.mmc: base:0x8ba91ab8 irq:32