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pinctrl: generic: Add output-enable property

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Add output-enable generic pin configuration property.
This properties allows enabling/disabling pin's output capabilities
without actually driving any value on the line.

Acked-by: Rob Herring <[email protected]>
[Added inline elaborations on buffer enabling/disabling]
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Jacopo Mondi 2017-06-22 12:00:58 +02:00 • committed by Linus Walleij
commit 425562429d
3 changed files with 22 additions and 6 deletions
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3
drivers/pinctrl/pinconf-generic.c
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@ -44,6 +44,7 @@ static const struct pin_config_item conf_items[] = {
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT, "input schmitt trigger", NULL, false),
PCONFDUMP(PIN_CONFIG_INPUT_SCHMITT_ENABLE, "input schmitt enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_LOW_POWER_MODE, "pin low power", "mode", true),
PCONFDUMP(PIN_CONFIG_OUTPUT_ENABLE, "output enabled", NULL, false),
PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true),
PCONFDUMP(PIN_CONFIG_POWER_SOURCE, "pin power source", "selector", true),
PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true),
@ -172,6 +173,8 @@ static const struct pinconf_generic_params dt_params[] = {
{ "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 },
{ "low-power-disable", PIN_CONFIG_LOW_POWER_MODE, 0 },
{ "low-power-enable", PIN_CONFIG_LOW_POWER_MODE, 1 },
{ "output-disable", PIN_CONFIG_OUTPUT_ENABLE, 0 },
{ "output-enable", PIN_CONFIG_OUTPUT_ENABLE, 1 },
{ "output-high", PIN_CONFIG_OUTPUT, 1, },
{ "output-low", PIN_CONFIG_OUTPUT, 0, },
{ "power-source", PIN_CONFIG_POWER_SOURCE, 0 },