From: Coiby Xu coiby.xu@gmail.com
commit c64a6a0d4a928c63e5bc3b485552a8903a506c36 upstream.
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 andy.shevchenko@gmail.com Suggested-by: Andy Shevchenko andy.shevchenko@gmail.com Suggested-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Coiby Xu coiby.xu@gmail.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Reviewed-by: Hans de Goede hdegoede@redhat.com Link: https://lore.kernel.org/linux-gpio/2f4706a1-502f-75f0-9596-cc25b4933b6c@redh... Link: https://lore.kernel.org/r/20201105231912.69527-3-coiby.xu@gmail.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/pinctrl/pinctrl-amd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -140,7 +140,7 @@ static int amd_gpio_set_debounce(struct 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);