请教最新的bq25708充电芯片的Linux驱动程序。基于imx6平台的。

[ 2.300418] [bq25700] bq25700_init_device: Charger Enabled Successfully!
[ 2.311822] [bq25700] bq25700_init_device: ADC start successfully
[ 2.326844] [bq25700] bq25700_charger_probe: bq25700 probe successfully, ManufactureID:124
[ 2.326844] !
[ 2.329721] Unable to handle kernel NULL pointer dereference at virtual address 000001f4
[ 2.348694] imx2-honeywell-wdt 20bc000.honeywell-wdog: timeout 18 sec
[ 2.357740] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
[ 2.366299] pgd = 80004000
[ 2.369344] [000001f4] *pgd=00000000
[ 2.374698] sdhci: Secure Digital Host Controller Interface driver
[ 2.381037] Internal error: Oops: 5 [#1] PREEMPT ARM
[ 2.386019] Modules linked in:
[ 2.389093] CPU: 0 PID: 72 Comm: kworker/0:2 Not tainted 4.14.174+g2d1a9ec6b47d #1
[ 2.396666] Hardware name: Freescale i.MX6 SoloX (Device Tree)
[ 2.402523] Workqueue: events power_supply_changed_work
[ 2.407759] task: b5457700 task.stack: b53e8000
[ 2.412306] PC is at strlen+0x0/0x2c
[ 2.415893] LR is at power_supply_uevent+0xfc/0x1e0
[ 2.420773] pc : [<808d1dd0>] lr : [<806768c4>] psr: a00d0113
[ 2.427041] sp : b53e9e68 ip : b53e9da7 fp : 014000c0
[ 2.432267] r10: b562d000 r9 : 80d52518 r8 : 000001f4
[ 2.437494] r7 : b5665828 r6 : 00000042 r5 : b5671000 r4 : 00000002
[ 2.444023] r3 : 00000000 r2 : 0000000a r1 : 0000000a r0 : 000001f4
[ 2.450555] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 2.457693] Control: 10c53c7d Table: b5668059 DAC: 00000051
[ 2.463442] Process kworker/0:2 (pid: 72, stack limit = 0xb53e8208)
[ 2.469711] Stack: (0xb53e9e68 to 0xb53ea000)
[ 2.474076] 9e60: 809a819c b5665800 80b3f7d8 00000000 ffffff04 b5665830
[ 2.482258] 9e80: b562d000 b5665828 8050eca0 b562d000 8095c118 b40276c0 80b2fed8 8050ed60
[ 2.490440] 9ea0: 80b2fed8 808c9ac0 00000000 b53e9ec0 b5665830 b5665830 b5665830 00000002
[ 2.498622] 9ec0: 00000000 808c9d50 80d0c930 806c5a50 b5665800 00000000 80b3f724 b566ed80
[ 2.506805] 9ee0: 80d0c8ec 00000000 80d0c8ec 806c5abc 80dd22f4 00000000 b5665800 b56659a8
[ 2.514988] 9f00: 80dd22f0 b5665800 600d0113 80d0c8ec 00000000 80d0c8ec 80d0c930 8067598c
[ 2.523169] 9f20: b56659a8 b53e6880 bf4a2100 00000000 80d0c8ec 8013f390 80d12640 80d0c900
[ 2.531351] 9f40: b53e6880 80d0c8ec b53e6898 80d12640 80d0c900 b53e8000 80d0c8ec 8013f618
[ 2.539533] 9f60: b5457700 b53f5d80 b4fd0980 00000000 b53e8000 b53e6880 8013f5e4 b53f5d98
[ 2.547715] 9f80: b406bee4 80144cfc b53e8000 b4fd0980 80144be0 00000000 00000000 00000000
[ 2.555896] 9fa0: 00000000 00000000 00000000 80107768 00000000 00000000 00000000 00000000
[ 2.564077] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 2.572258] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 2.580467] [<808d1dd0>] (strlen) from [<806768c4>] (power_supply_uevent+0xfc/0x1e0)
[ 2.588232] [<806768c4>] (power_supply_uevent) from [<8050ed60>] (dev_uevent+0xc0/0x1c8)
[ 2.596338] [<8050ed60>] (dev_uevent) from [<808c9d50>] (kobject_uevent_env+0x204/0x594)
[ 2.604439] [<808c9d50>] (kobject_uevent_env) from [<8067598c>] (power_supply_changed_work+0x98/0x110)
[ 2.613766] [<8067598c>] (power_supply_changed_work) from [<8013f390>] (process_one_work+0x1a0/0x3f4)
[ 2.622997] [<8013f390>] (process_one_work) from [<8013f618>] (worker_thread+0x34/0x590)
[ 2.631098] [<8013f618>] (worker_thread) from [<80144cfc>] (kthread+0x11c/0x14c)
[ 2.638508] [<80144cfc>] (kthread) from [<80107768>] (ret_from_fork+0x14/0x2c)
[ 2.645739] Code: e7d23003 e3130020 1afffffb e12fff1e (e5d03000)
[ 2.651974] sdhci: Copyright(c) Pierre Ossman

这是完整的log，驱动里出现了一个空指针，但是系统无法启动。

下面是dts的配置：
&i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";

bq25700: bq25700@09 {//09 for SMBUS,6a for I2C
compatible = "ti,bq25700";
reg = <0x09>;
ti,bq25700,minimum-system-voltage = <10500>; // 0x3e 10500mv
ti,bq25700,input-volt-limit = <10880>; // 0x3d 10880mv
ti,bq25700,input-curr-limit = <3250>; // 0x3f 3250ma
ti,bq25700,charge-volt = <14500>; // 0x15 14500mv
ti,bq25700,charge-current = <1024>; // 0x14 1024ma
status = "okay";
};
};

i2c1 {
pinctrl_i2c1: i2c1grp {
fsl,pins = <
MX6SX_PAD_GPIO1_IO01__I2C1_SDA 0x4001b8b1
MX6SX_PAD_GPIO1_IO00__I2C1_SCL 0x4001b8b1
>;
};
};