1 * Pin configuration for TI DA850/OMAP-L138/AM18x
2
3 These SoCs have a separate controller for setting bias (internal pullup/down).
4 Bias can only be selected for groups rather than individual pins.
5
6 Required Properties:
7
8 - compatible: Must be "ti,da850-pupd"
9 - reg: Base address and length of the memory resource used by the pullup/down
10 controller hardware module.
11
12 The controller node also acts as a container for pin group configuration nodes.
13 The names of these groups are ignored.
14
15 Pin Group Node Properties:
16
17 - groups: An array of strings, each string containing the name of a pin group.
18 Valid names are "cp0".."cp31".
19
20 The pin configuration parameters use the generic pinconf bindings defined in
21 pinctrl-bindings.txt in this directory. The supported parameters are
22 bias-disable, bias-pull-up, bias-pull-down.
23
24
25 Example
26 -------
27
28 In common dtsi file:
29
30 pinconf: pin-controller@22c00c {
31 compatible = "ti,da850-pupd";
32 reg = <0x22c00c 0x8>;
33 };
34
35 In board-specific file:
36
37 &pinconf {
38 pinctrl-0 = <&pinconf_bias_groups>;
39 pinctrl-names = "default";
40
41 pinconf_bias_groups: bias-groups {
42 pull-up {
43 groups = "cp30", "cp31";
44 bias-pull-up;
45 };
46 pull-down {
47 groups = "cp29", "cp28";
48 bias-pull-down;
49 };
50 disable {
51 groups = "cp27", "cp26";
52 bias-disable;
53 };
54 };
55 };
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