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pinctrl: pinconf-generic: Add property 'input-debounce-ns'

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Add 'input-debounce-ns' to the generic parameters used for parsing DT
files, along with the corresponding configuration parameter
PIN_CONFIG_INPUT_DEBOUNCE_NS. This allows debounce time to be specified
in nanoseconds as an alternative to the existing 'input-debounce'
property which uses microseconds

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
This commit is contained in:
Changhuang Liang 2026-09-10 03:03:37 -07:00 committed by Linus Walleij
parent 5dde08ea70
commit fead11de1f
2 changed files with 7 additions and 0 deletions
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2
drivers/pinctrl/pinconf-generic.c
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@ -43,6 +43,7 @@ static const struct pin_config_item conf_items[] = {
PCONFDUMP(PIN_CONFIG_DRIVE_STRENGTH, "output drive strength", "mA", true),
PCONFDUMP(PIN_CONFIG_DRIVE_STRENGTH_UA, "output drive strength", "uA", true),
PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE, "input debounce", "usec", true),
PCONFDUMP(PIN_CONFIG_INPUT_DEBOUNCE_NS, "input debounce", "nsec", true),
PCONFDUMP(PIN_CONFIG_INPUT_ENABLE, "input enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_UV, "input schmitt threshold", "uV", true),
@ -185,6 +186,7 @@ static const struct pinconf_generic_params dt_params[] = {
{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
{ "drive-strength-microamp", PIN_CONFIG_DRIVE_STRENGTH_UA, 0 },
{ "input-debounce", PIN_CONFIG_INPUT_DEBOUNCE, 0 },
{ "input-debounce-ns", PIN_CONFIG_INPUT_DEBOUNCE_NS, 0 },
{ "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
{ "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
{ "input-schmitt", PIN_CONFIG_INPUT_SCHMITT, 0 },

5
include/linux/pinctrl/pinconf-generic.h
View File

@ -71,6 +71,10 @@ struct pinctrl_map;
* which means it will wait for signals to settle when reading inputs. The
* argument gives the debounce time in usecs. Setting the
* argument to zero turns debouncing off.
* @PIN_CONFIG_INPUT_DEBOUNCE_NS: this will configure the pin to debounce mode,
* which means it will wait for signals to settle when reading inputs. The
* argument gives the debounce time in nsecs. Setting the
* argument to zero turns debouncing off.
* @PIN_CONFIG_INPUT_ENABLE: enable the pin's input. Note that this does not
* affect the pin's ability to drive output. 1 enables input, 0 disables
* input.
@ -143,6 +147,7 @@ enum pin_config_param {
PIN_CONFIG_DRIVE_STRENGTH,
PIN_CONFIG_DRIVE_STRENGTH_UA,
PIN_CONFIG_INPUT_DEBOUNCE,
PIN_CONFIG_INPUT_DEBOUNCE_NS,
PIN_CONFIG_INPUT_ENABLE,
PIN_CONFIG_INPUT_SCHMITT,
PIN_CONFIG_INPUT_SCHMITT_ENABLE,