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dt-bindings: pinctrl: at91-pio4: add slew-rate 

Document slew-rate DT binding for SAMA7G5.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1611747945-29960-2-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Claudiu Beznea 2021-01-27 13:45:43 +02:00 committed by Linus Walleij
parent d3171b6882
commit aad018aacb
1 changed files with 5 additions and 3 deletions
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8
Documentation/devicetree/bindings/pinctrl/atmel,at91-pio4-pinctrl.txt
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@ -35,9 +35,11 @@ ioset settings. Use the macros from boot/dts/<soc>-pinfunc.h file to get the
right representation of the pin.
Optional properties:
- GENERIC_PINCONFIG: generic pinconfig options to use, bias-disable,
bias-pull-down, bias-pull-up, drive-open-drain, input-schmitt-enable,
input-debounce, output-low, output-high.
- GENERIC_PINCONFIG: generic pinconfig options to use:
- bias-disable, bias-pull-down, bias-pull-up, drive-open-drain,
input-schmitt-enable, input-debounce, output-low, output-high.
- for microchip,sama7g5-pinctrl only:
- slew-rate: 0 - disabled, 1 - enabled (default)
- atmel,drive-strength: 0 or 1 for low drive, 2 for medium drive and 3 for
high drive. The default value is low drive.