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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | * 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; }; }; }; |