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pinctrl: generic: add new 'drive-strength-microamp' property support
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Add drive-strength-microamp property support to allow drive strength in uA

Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Guillaume La Roque authored and Linus Walleij committed May 23, 2019
1 parent 3e75b76 commit c08e7e4
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Showing 2 changed files with 5 additions and 0 deletions.
2 changes: 2 additions & 0 deletions drivers/pinctrl/pinconf-generic.c
Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,7 @@ static const struct pin_config_item conf_items[] = {
PCONFDUMP(PIN_CONFIG_DRIVE_OPEN_SOURCE, "output drive open source", NULL, false),
PCONFDUMP(PIN_CONFIG_DRIVE_PUSH_PULL, "output drive push pull", NULL, false),
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_ENABLE, "input enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL, false),
Expand Down Expand Up @@ -167,6 +168,7 @@ static const struct pinconf_generic_params dt_params[] = {
{ "drive-open-source", PIN_CONFIG_DRIVE_OPEN_SOURCE, 0 },
{ "drive-push-pull", PIN_CONFIG_DRIVE_PUSH_PULL, 0 },
{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
{ "drive-strength-microamp", PIN_CONFIG_DRIVE_STRENGTH_UA, 0 },
{ "input-debounce", PIN_CONFIG_INPUT_DEBOUNCE, 0 },
{ "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
{ "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
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3 changes: 3 additions & 0 deletions include/linux/pinctrl/pinconf-generic.h
Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,8 @@
* push-pull mode, the argument is ignored.
* @PIN_CONFIG_DRIVE_STRENGTH: the pin will sink or source at most the current
* passed as argument. The argument is in mA.
* @PIN_CONFIG_DRIVE_STRENGTH_UA: the pin will sink or source at most the current
* passed as argument. The argument is in uA.
* @PIN_CONFIG_INPUT_DEBOUNCE: 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 usecs. Setting the
Expand Down Expand Up @@ -112,6 +114,7 @@ enum pin_config_param {
PIN_CONFIG_DRIVE_OPEN_SOURCE,
PIN_CONFIG_DRIVE_PUSH_PULL,
PIN_CONFIG_DRIVE_STRENGTH,
PIN_CONFIG_DRIVE_STRENGTH_UA,
PIN_CONFIG_INPUT_DEBOUNCE,
PIN_CONFIG_INPUT_ENABLE,
PIN_CONFIG_INPUT_SCHMITT,
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