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counter: stm32-timer-cnt: Reset TIM_TISEL to its default value in probe

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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>
This commit is contained in:
Uwe Kleine-König 2023-04-13 23:23:39 +02:00 committed by William Breathitt Gray
parent a4ec431fbf
commit 5272145d5c
1 changed files with 3 additions and 0 deletions
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3
drivers/counter/stm32-timer-cnt.c
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@ -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)