From: Coiby Xu <[email protected]> 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: [email protected] Reported-by: Andy Shevchenko <[email protected]> Suggested-by: Andy Shevchenko <[email protected]> Suggested-by: Hans de Goede <[email protected]> Signed-off-by: Coiby Xu <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Reviewed-by: Hans de Goede <[email protected]> Link: https://lore.kernel.org/linux-gpio/[email protected]/ Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- 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 @@ -144,7 +144,7 @@ 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);
