From: Coiby Xu Date: Thu, 5 Nov 2020 23:19:10 +0000 (+0800) Subject: pinctrl: amd: use higher precision for 512 RtcClk X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c64a6a0d4a928c63e5bc3b485552a8903a506c36;p=linux.git pinctrl: amd: use higher precision for 512 RtcClk RTC is 32.768kHz thus 512 RtcClk equals 15625 usec. The documentation likely has dropped precision and that's why the driver mistakenly took the slightly deviated value. Cc: stable@vger.kernel.org Reported-by: Andy Shevchenko Suggested-by: Andy Shevchenko Suggested-by: Hans de Goede Signed-off-by: Coiby Xu Reviewed-by: Andy Shevchenko Reviewed-by: Hans de Goede Link: https://lore.kernel.org/linux-gpio/2f4706a1-502f-75f0-9596-cc25b4933b6c@redhat.com/ Link: https://lore.kernel.org/r/20201105231912.69527-3-coiby.xu@gmail.com Signed-off-by: Linus Walleij --- diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c index d6b2b4bd337c3..4aea3e05e8c65 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);