diff options
Diffstat (limited to 'drivers/mfd/stm32-timers.c')
| -rw-r--r-- | drivers/mfd/stm32-timers.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mfd/stm32-timers.c b/drivers/mfd/stm32-timers.c index a6675a449409..e280e0ff2dcc 100644 --- a/drivers/mfd/stm32-timers.c +++ b/drivers/mfd/stm32-timers.c @@ -20,13 +20,18 @@ static const struct regmap_config stm32_timers_regmap_cfg = { static void stm32_timers_get_arr_size(struct stm32_timers *ddata) { + u32 arr; + + /* Backup ARR to restore it after getting the maximum value */ + regmap_read(ddata->regmap, TIM_ARR, &arr); + /* * Only the available bits will be written so when readback * we get the maximum value of auto reload register */ regmap_write(ddata->regmap, TIM_ARR, ~0L); regmap_read(ddata->regmap, TIM_ARR, &ddata->max_arr); - regmap_write(ddata->regmap, TIM_ARR, 0x0); + regmap_write(ddata->regmap, TIM_ARR, arr); } static int stm32_timers_probe(struct platform_device *pdev) |