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56 lines
1.3 KiB
Plaintext
56 lines
1.3 KiB
Plaintext
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* Pin configuration for TI DA850/OMAP-L138/AM18x
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These SoCs have a separate controller for setting bias (internal pullup/down).
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Bias can only be selected for groups rather than individual pins.
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Required Properties:
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- compatible: Must be "ti,da850-pupd"
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- reg: Base address and length of the memory resource used by the pullup/down
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controller hardware module.
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The controller node also acts as a container for pin group configuration nodes.
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The names of these groups are ignored.
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Pin Group Node Properties:
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- groups: An array of strings, each string containing the name of a pin group.
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Valid names are "cp0".."cp31".
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The pin configuration parameters use the generic pinconf bindings defined in
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pinctrl-bindings.txt in this directory. The supported parameters are
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bias-disable, bias-pull-up, bias-pull-down.
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Example
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-------
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In common dtsi file:
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pinconf: pin-controller@22c00c {
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compatible = "ti,da850-pupd";
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reg = <0x22c00c 0x8>;
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};
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In board-specific file:
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&pinconf {
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pinctrl-0 = <&pinconf_bias_groups>;
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pinctrl-names = "default";
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pinconf_bias_groups: bias-groups {
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pull-up {
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groups = "cp30", "cp31";
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bias-pull-up;
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};
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pull-down {
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groups = "cp29", "cp28";
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bias-pull-down;
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};
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disable {
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groups = "cp27", "cp26";
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bias-disable;
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};
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};
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};
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