1* Spreadtrum SC9860 Pin Controller
2
3Please refer to sprd,pinctrl.txt in this directory for common binding part
4and usage.
5
6Required properties:
7- compatible: Must be "sprd,sc9860-pinctrl".
8- reg: The register address of pin controller device.
9- pins : An array of strings, each string containing the name of a pin.
10
11Optional properties:
12- function: A string containing the name of the function, values must be
13  one of: "func1", "func2", "func3" and "func4".
14- drive-strength: Drive strength in mA. Supported values: 2, 4, 6, 8, 10,
15  12, 14, 16, 20, 21, 24, 25, 27, 29, 31 and 33.
16- input-schmitt-disable: Enable schmitt-trigger mode.
17- input-schmitt-enable: Disable schmitt-trigger mode.
18- bias-disable: Disable pin bias.
19- bias-pull-down: Pull down on pin.
20- bias-pull-up: Pull up on pin. Supported values: 20000 for pull-up resistor
21  is 20K and 4700 for pull-up resistor is 4.7K.
22- input-enable: Enable pin input.
23- input-disable: Enable pin output.
24- output-high: Set the pin as an output level high.
25- output-low: Set the pin as an output level low.
26- sleep-hardware-state: Indicate these configs in this state are sleep related.
27- sprd,control: Control values referring to databook for global control pins.
28- sprd,sleep-mode: Choose the pin sleep mode, and supported values are:
29  AP_SLEEP, PUBCP_SLEEP, TGLDSP_SLEEP and AGDSP_SLEEP.
30
31Pin sleep mode definition:
32enum pin_sleep_mode {
33	AP_SLEEP = BIT(0),
34	PUBCP_SLEEP = BIT(1),
35	TGLDSP_SLEEP = BIT(2),
36	AGDSP_SLEEP = BIT(3),
37};
38
39Example:
40pin_controller: pinctrl@402a0000 {
41	compatible = "sprd,sc9860-pinctrl";
42	reg = <0x402a0000 0x10000>;
43
44	grp1: sd0 {
45		pins = "SC9860_VIO_SD2_IRTE", "SC9860_VIO_SD0_IRTE";
46		sprd,control = <0x1>;
47	};
48
49	grp2: rfctl_33 {
50		pins = "SC9860_RFCTL33";
51		function = "func2";
52		sprd,sleep-mode = <AP_SLEEP | PUBCP_SLEEP>;
53		grp2_sleep_mode: rfctl_33_sleep {
54			pins = "SC9860_RFCTL33";
55			sleep-hardware-state;
56			output-low;
57		}
58	};
59
60	grp3: rfctl_misc_20 {
61		pins = "SC9860_RFCTL20_MISC";
62		drive-strength = <10>;
63		bias-pull-up = <4700>;
64		grp3_sleep_mode: rfctl_misc_sleep {
65			pins = "SC9860_RFCTL20_MISC";
66			sleep-hardware-state;
67			bias-pull-up;
68		}
69	};
70};
71