Commit 342030c7 authored by David Lechner's avatar David Lechner Committed by Linus Walleij

devicetree: bindings: pinctrl: Add binding for ti,da850-pupd

Device-tree bindings for TI DA850/OMAP-L138/AM18XX pullup/pulldown
pinconf controller.
Signed-off-by: David Lechner's avatarDavid Lechner <david@lechnology.com>
Reviewed-by: default avatarSekhar Nori <nsekhar@ti.com>
Acked-by: Rob Herring's avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 0ea66f76
* Pin configuration for TI DA850/OMAP-L138/AM18x
These SoCs have a separate controller for setting bias (internal pullup/down).
Bias can only be selected for groups rather than individual pins.
Required Properties:
- compatible: Must be "ti,da850-pupd"
- reg: Base address and length of the memory resource used by the pullup/down
controller hardware module.
The controller node also acts as a container for pin group configuration nodes.
The names of these groups are ignored.
Pin Group Node Properties:
- groups: An array of strings, each string containing the name of a pin group.
Valid names are "cp0".."cp31".
The pin configuration parameters use the generic pinconf bindings defined in
pinctrl-bindings.txt in this directory. The supported parameters are
bias-disable, bias-pull-up, bias-pull-down.
Example
-------
In common dtsi file:
pinconf: pin-controller@22c00c {
compatible = "ti,da850-pupd";
reg = <0x22c00c 0x8>;
};
In board-specific file:
&pinconf {
pinctrl-0 = <&pinconf_bias_groups>;
pinctrl-names = "default";
pinconf_bias_groups: bias-groups {
pull-up {
groups = "cp30", "cp31";
bias-pull-up;
};
pull-down {
groups = "cp29", "cp28";
bias-pull-down;
};
disable {
groups = "cp27", "cp26";
bias-disable;
};
};
};
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