For HW that can select the IO standard for pins, add the infrastructure in pinconf generic to parse this parameter.
Signed-off-by: Soren Brinkmann <[email protected]> --- Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt | 3 +++ drivers/pinctrl/pinconf-generic.c | 2 ++ include/linux/pinctrl/pinconf-generic.h | 4 ++++ 3 files changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt index 98eb94d91a1c..862c4fe17d04 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt @@ -184,6 +184,7 @@ low-power-disable - disable low power mode output-low - set the pin to output mode with low level output-high - set the pin to output mode with high level slew-rate - set the slew rate +io-standard - set the IO standard For example: @@ -215,5 +216,7 @@ arguments are described below. - input-debounce takes the debounce time in usec as argument or 0 to disable debouncing +- io-standard takes a driver specific argument to select an IO standard + More in-depth documentation on these parameters can be found in <include/linux/pinctrl/pinconfig-generic.h> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c index e28ef957ca2d..17ac8f00e16b 100644 --- a/drivers/pinctrl/pinconf-generic.c +++ b/drivers/pinctrl/pinconf-generic.c @@ -58,6 +58,7 @@ static struct pin_config_item conf_items[] = { PCONFDUMP(PIN_CONFIG_SLEW_RATE, "slew rate", NULL, true), PCONFDUMP(PIN_CONFIG_LOW_POWER_MODE, "pin low power", "mode", true), PCONFDUMP(PIN_CONFIG_OUTPUT, "pin output", "level", true), + PCONFDUMP(PIN_CONFIG_IOSTANDARD, "io standard", NULL, true), }; void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev, @@ -181,6 +182,7 @@ static struct pinconf_generic_dt_params dt_params[] = { { "output-low", PIN_CONFIG_OUTPUT, 0, }, { "output-high", PIN_CONFIG_OUTPUT, 1, }, { "slew-rate", PIN_CONFIG_SLEW_RATE, 0}, + { "io-standard", PIN_CONFIG_IOSTANDARD, 0}, }; /** diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index d578a60eff23..dd1d3251fb93 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -92,6 +92,9 @@ * @PIN_CONFIG_END: this is the last enumerator for pin configurations, if * you need to pass in custom configurations to the pin controller, use * PIN_CONFIG_END+1 as the base offset. + * @PIN_CONFIG_IOSTANDARD: if the pin can select an IO standard, the argument to + * this parameter (on a custom format) tells the driver which alternative + * IO standard to use. */ enum pin_config_param { PIN_CONFIG_BIAS_DISABLE, @@ -112,6 +115,7 @@ enum pin_config_param { PIN_CONFIG_SLEW_RATE, PIN_CONFIG_LOW_POWER_MODE, PIN_CONFIG_OUTPUT, + PIN_CONFIG_IOSTANDARD, PIN_CONFIG_END = 0x7FFF, }; -- 2.1.2.1.g5e69ed6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
