This is a note to let you know that I've just added the patch titled
pinctrl: amd: use higher precision for 512 RtcClk
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pinctrl-amd-use-higher-precision-for-512-rtcclk.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c64a6a0d4a928c63e5bc3b485552a8903a506c36 Mon Sep 17 00:00:00 2001
From: Coiby Xu <coiby.xu@xxxxxxxxx>
Date: Fri, 6 Nov 2020 07:19:10 +0800
Subject: pinctrl: amd: use higher precision for 512 RtcClk
From: Coiby Xu <coiby.xu@xxxxxxxxx>
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@xxxxxxxxxxxxxxx
Reported-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Suggested-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Suggested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Coiby Xu <coiby.xu@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Link: https://lore.kernel.org/linux-gpio/2f4706a1-502f-75f0-9596-cc25b4933b6c@xxxxxxxxxx/
Link: https://lore.kernel.org/r/20201105231912.69527-3-coiby.xu@xxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -156,7 +156,7 @@ 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);
Patches currently in stable-queue which might be from coiby.xu@xxxxxxxxx are
queue-5.9/pinctrl-amd-use-higher-precision-for-512-rtcclk.patch
queue-5.9/pinctrl-amd-fix-incorrect-way-to-disable-debounce-filter.patch
