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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-04-14 00:23:39 +0300 |
|---|---|---|
| committer | William Breathitt Gray <william.gray@linaro.org> | 2023-05-10 02:17:17 +0300 |
| commit | 5272145d5cccd7cb73a8ce4b0b90c1c6b37a6a66 (patch) | |
| tree | 5410018281f01bfb91052ed9c16834e5b8926d94 /drivers/counter | |
| parent | a4ec431fbf6b9533d2bb21fa328d88c1436106cf (diff) | |
| download | linux-5272145d5cccd7cb73a8ce4b0b90c1c6b37a6a66.tar.xz | |
counter: stm32-timer-cnt: Reset TIM_TISEL to its default value in probe
The driver assumes that the input selection register (TIM_TISEL) is at
its reset default value. Usually this is the case, but the bootloader
might have modified it.
This bases on a similar patch submitted by Olivier Moysan for pwm-stm32.
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230413212339.3611722-1-u.kleine-koenig@pengutronix.de/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Diffstat (limited to 'drivers/counter')
| -rw-r--r-- | drivers/counter/stm32-timer-cnt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/counter/stm32-timer-cnt.c b/drivers/counter/stm32-timer-cnt.c index 9bf20a5d6bda..6206d2dc3d47 100644 --- a/drivers/counter/stm32-timer-cnt.c +++ b/drivers/counter/stm32-timer-cnt.c @@ -342,6 +342,9 @@ static int stm32_timer_cnt_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); + /* Reset input selector to its default input */ + regmap_write(priv->regmap, TIM_TISEL, 0x0); + /* Register Counter device */ ret = devm_counter_add(dev, counter); if (ret < 0) |