Commit 5272145d authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by William Breathitt Gray
Browse files

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: default avatarFabrice Gasnier <fabrice.gasnier@foss.st.com>
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230413212339.3611722-1-u.kleine-koenig@pengutronix.de/


Signed-off-by: default avatarWilliam Breathitt Gray <william.gray@linaro.org>
parent a4ec431f

drivers/counter/stm32-timer-cnt.c

+3 −0
Original line number Diff line number Diff line
@@ -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)