linux-kernel - [PATCH v2 2/4] pinctrl: amd: use higher precision for 512 RtcClk

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Message-Id: <20201104230703.21466-3-coiby.xu@gmail.com>
Date:   Thu,  5 Nov 2020 07:07:01 +0800
From:   Coiby Xu <coiby.xu@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-gpio@...r.kernel.org (open list:PIN CONTROL SUBSYSTEM),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2 2/4] pinctrl: amd: use higher precision for 512 RtcClk

RTC is 32.768kHz thus 512 RtcClk equals 15625 usec.

Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
Suggested-by: Hans de Goede <hdegoede@...hat.com>
Link: https://lore.kernel.org/linux-gpio/2f4706a1-502f-75f0-9596-cc25b4933b6c@redhat.com/
Signed-off-by: Coiby Xu <coiby.xu@...il.com>
---
 drivers/pinctrl/pinctrl-amd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index d6b2b4bd337c..4aea3e05e8c6 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -156,7 +156,7 @@ static int amd_gpio_set_debounce(struct gpio_chip *gc, unsigned offset,
 			pin_reg |= BIT(DB_TMR_OUT_UNIT_OFF);
 			pin_reg &= ~BIT(DB_TMR_LARGE_OFF);
 		} else if (debounce < 250000) {
-			time = debounce / 15600;
+			time = debounce / 15625;
 			pin_reg |= time & DB_TMR_OUT_MASK;
 			pin_reg &= ~BIT(DB_TMR_OUT_UNIT_OFF);
 			pin_reg |= BIT(DB_TMR_LARGE_OFF);
--
2.28.0