Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2de5da57 authored by Marek Roszko's avatar Marek Roszko Committed by Linus Walleij
Browse files

pinctrl: at91: update for drive strength options and tweaks 



The drive strength patched introduced the atmel,sama5d-pinctrl
compatible string. Drive strength is now an option for the
CONFIG bits per pin. Also added note about MULTIDRIVE being
equivalent to open-drain output and added missing "s" at the
end of need everywhere in the bits descriptions.

Signed-off-by: default avatarMarek Roszko <mark.roszko@gmail.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 4334ac2d

Documentation/devicetree/bindings/pinctrl/atmel,at91-pinctrl.txt

+15 −7
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ such as pull-up, multi drive, etc. 


Required properties for iomux controller:

- compatible: "atmel,at91rm9200-pinctrl" or "atmel,at91sam9x5-pinctrl"

		or "atmel,sama5d3-pinctrl"

- atmel,mux-mask: array of mask (periph per bank) to describe if a pin can be

  configured in this periph mode. All the periph and bank need to be describe.
@@ -85,13 +86,20 @@ Required properties for pin configuration node: 
  PIN_BANK 0 is pioA, PIN_BANK 1 is pioB...



Bits used for CONFIG:

PULL_UP		(1 << 0): indicate this pin need a pull up.

MULTIDRIVE	(1 << 1): indicate this pin need to be configured as multidrive.

DEGLITCH	(1 << 2): indicate this pin need deglitch.

PULL_DOWN	(1 << 3): indicate this pin need a pull down.

DIS_SCHMIT	(1 << 4): indicate this pin need to disable schmit trigger.

DEBOUNCE	(1 << 16): indicate this pin need debounce.

DEBOUNCE_VAL	(0x3fff << 17): debounce val.

PULL_UP		(1 << 0): indicate this pin needs a pull up.

MULTIDRIVE	(1 << 1): indicate this pin needs to be configured as multi-drive.

			Multi-drive is equivalent to open-drain type output.

DEGLITCH	(1 << 2): indicate this pin needs deglitch.

PULL_DOWN	(1 << 3): indicate this pin needs a pull down.

DIS_SCHMIT	(1 << 4): indicate this pin needs to the disable schmitt trigger.

DRIVE_STRENGTH (3 << 5): indicate the drive strength of the pin using the

			following values:

				00 - No change (reset state value kept)

				01 - Low

				10 - Medium

				11 - High

DEBOUNCE	(1 << 16): indicate this pin needs debounce.

DEBOUNCE_VAL	(0x3fff << 17): debounce value.



NOTE:

Some requirements for using atmel,at91rm9200-pinctrl binding: