From: Biju Das <biju.das.jz@bp.renesas.com>

Reinitialize the cache value to 0 during disable().

Fixes: 061f087f5d0b ("pwm: Add support for RZ/G2L GPT")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v3:
 * New patch.
---
 drivers/pwm/pwm-rzg2l-gpt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-rzg2l-gpt.c b/drivers/pwm/pwm-rzg2l-gpt.c
index 360c8bf3b190..b2452e50d618 100644
--- a/drivers/pwm/pwm-rzg2l-gpt.c
+++ b/drivers/pwm/pwm-rzg2l-gpt.c
@@ -190,8 +190,10 @@ static void rzg2l_gpt_disable(struct rzg2l_gpt_chip *rzg2l_gpt,
 	/* Stop count, Output low on GTIOCx pin when counting stops */
 	rzg2l_gpt->channel_enable_count[ch]--;
 
-	if (!rzg2l_gpt->channel_enable_count[ch])
+	if (!rzg2l_gpt->channel_enable_count[ch]) {
 		rzg2l_gpt_modify(rzg2l_gpt, RZG2L_GTCR(ch), RZG2L_GTCR_CST, 0);
+		rzg2l_gpt->period_ticks[ch] = 0;
+	}
 
 	/* Disable pin output */
 	rzg2l_gpt_modify(rzg2l_gpt, RZG2L_GTIOR(ch), RZG2L_GTIOR_OxE(sub_ch), 0);
-- 
2.43.0

On Mon, Sep 15, 2025 at 05:36:30PM +0100, Biju wrote:
> From: Biju Das <biju.das.jz@bp.renesas.com>
> 
> Reinitialize the cache value to 0 during disable().
> 
> Fixes: 061f087f5d0b ("pwm: Add support for RZ/G2L GPT")
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> ---
> v3:
>  * New patch.
> ---
>  drivers/pwm/pwm-rzg2l-gpt.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pwm/pwm-rzg2l-gpt.c b/drivers/pwm/pwm-rzg2l-gpt.c
> index 360c8bf3b190..b2452e50d618 100644
> --- a/drivers/pwm/pwm-rzg2l-gpt.c
> +++ b/drivers/pwm/pwm-rzg2l-gpt.c
> @@ -190,8 +190,10 @@ static void rzg2l_gpt_disable(struct rzg2l_gpt_chip *rzg2l_gpt,
>  	/* Stop count, Output low on GTIOCx pin when counting stops */
>  	rzg2l_gpt->channel_enable_count[ch]--;
>  
> -	if (!rzg2l_gpt->channel_enable_count[ch])
> +	if (!rzg2l_gpt->channel_enable_count[ch]) {
>  		rzg2l_gpt_modify(rzg2l_gpt, RZG2L_GTCR(ch), RZG2L_GTCR_CST, 0);
> +		rzg2l_gpt->period_ticks[ch] = 0;
> +	}

A code comment and/or a more verbose commit log would be very welcome.

>  	/* Disable pin output */
>  	rzg2l_gpt_modify(rzg2l_gpt, RZG2L_GTIOR(ch), RZG2L_GTIOR_OxE(sub_ch), 0);

Best regards
Uwe