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Documentation / devicetree / bindings / pinctrl / ste,nomadik.txt




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Based on kernel version 4.1. Page generated on 2015-06-28 12:10 EST.

1	ST Ericsson Nomadik pinmux controller
2	
3	Required properties:
4	- compatible: "stericsson,db8500-pinctrl", "stericsson,db8540-pinctrl",
5	              "stericsson,stn8815-pinctrl"
6	- reg: Should contain the register physical address and length of the PRCMU.
7	
8	Please refer to pinctrl-bindings.txt in this directory for details of the
9	common pinctrl bindings used by client devices, including the meaning of the
10	phrase "pin configuration node".
11	
12	ST Ericsson's pin configuration nodes act as a container for an arbitrary number of
13	subnodes. Each of these subnodes represents some desired configuration for a
14	pin, a group, or a list of pins or groups. This configuration can include the
15	mux function to select on those pin(s)/group(s), and various pin configuration
16	parameters, such as input, output, pull up, pull down...
17	
18	The name of each subnode is not important; all subnodes should be enumerated
19	and processed purely based on their content. The subnodes use the generic
20	pin multiplexing node layout from the standard pin control bindings
21	(see pinctrl-bindings.txt):
22	
23	Required pin multiplexing subnode properties:
24	- function: A string containing the name of the function to mux to the
25	  pin or group.
26	- groups : An array of strings. Each string contains the name of a pin
27	  group that will be combined with the function to form a multiplexing
28	  set-up.
29	
30	Required pin configuration subnode properties:
31	- pins: A string array describing the pins affected by the configuration
32	  in the node.
33	- ste,config: Handle of pin configuration node
34	  (e.g. ste,config = <&slpm_in_wkup_pdis>)
35	
36	- ste,input : <0/1/2>
37		0: input with no pull
38		1: input with pull up,
39		2: input with pull down,
40	
41	- ste,output: <0/1/2>
42		0: output low,
43		1: output high,
44		2: output (value is not specified).
45	
46	- ste,sleep: <0/1>
47		0: sleep mode disable,
48		1: sleep mode enable.
49	
50	- ste,sleep-input: <0/1/2/3>
51		0: sleep input with no pull,
52		1: sleep input with pull up,
53		2: sleep input with pull down.
54		3: sleep input and keep last input configuration (no pull, pull up or pull down).
55	
56	- ste,sleep-output: <0/1/2>
57		0: sleep output low,
58		1: sleep output high,
59		2: sleep output (value is not specified).
60	
61	- ste,sleep-gpio: <0/1>
62		0: disable sleep gpio mode,
63		1: enable sleep gpio mode.
64	
65	- ste,sleep-wakeup: <0/1>
66		0: wake-up detection enabled,
67		1: wake-up detection disabled.
68	
69	- ste,sleep-pull-disable: <0/1>
70		0: GPIO pull-up or pull-down resistor is enabled, when pin is an input,
71		1: GPIO pull-up and pull-down resistor are disabled.
72	
73	Example board file extract:
74	
75		pinctrl@80157000 {
76			compatible = "stericsson,db8500-pinctrl";
77			reg = <0x80157000 0x2000>;
78	
79			pinctrl-names = "default";
80	
81			slpm_in_wkup_pdis: slpm_in_wkup_pdis {
82				ste,sleep = <1>;
83				ste,sleep-input = <3>;
84				ste,sleep-wakeup = <1>;
85				ste,sleep-pull-disable = <0>;
86			};
87	
88			slpm_out_hi_wkup_pdis: slpm_out_hi_wkup_pdis {
89				ste,sleep = <1>;
90				ste,sleep-output = <1>;
91				ste,sleep-wakeup = <1>;
92				ste,sleep-pull-disable = <0>;
93			};
94	
95			slpm_out_wkup_pdis: slpm_out_wkup_pdis {
96				ste,sleep = <1>;
97				ste,sleep-output = <2>;
98				ste,sleep-wakeup = <1>;
99				ste,sleep-pull-disable = <0>;
100			};
101	
102			uart0 {
103				uart0_default_mux: uart0_mux {
104					u0_default_mux {
105						function = "u0";
106						pins = "u0_a_1";
107					};
108				};
109				uart0_default_mode: uart0_default {
110					uart0_default_cfg1 {
111						pins = "GPIO0", "GPIO2";
112						ste,input = <1>;
113					};
114	
115					uart0_default_cfg2 {
116						pins = "GPIO1", "GPIO3";
117						ste,output = <1>;
118					};
119				};
120				uart0_sleep_mode: uart0_sleep {
121					uart0_sleep_cfg1 {
122						pins = "GPIO0", "GPIO2";
123						ste,config = <&slpm_in_wkup_pdis>;
124					};
125					uart0_sleep_cfg2 {
126						pins = "GPIO1";
127						ste,config = <&slpm_out_hi_wkup_pdis>;
128					};
129					uart0_sleep_cfg3 {
130						pins = "GPIO3";
131						ste,config = <&slpm_out_wkup_pdis>;
132					};
133				};
134			};
135		};
136	
137		uart@80120000 {
138			compatible = "arm,pl011", "arm,primecell";
139			reg = <0x80120000 0x1000>;
140			interrupts = <0 11 0x4>;
141	
142			pinctrl-names = "default","sleep";
143			pinctrl-0 = <&uart0_default_mux>, <&uart0_default_mode>;
144			pinctrl-1 = <&uart0_sleep_mode>;
145		};
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