summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/arm/atmel-at91.txt
blob: 424ac8cbfa08283712309e8cfca1fc822c98d3a0 (plain) (blame)
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
Atmel AT91 device tree bindings.
================================

Boards with a SoC of the Atmel AT91 or SMART family shall have the following
properties:

Required root node properties:
compatible: must be one of:
 * "atmel,at91rm9200"

 * "atmel,at91sam9" for SoCs using an ARM926EJ-S core, shall be extended with
   the specific SoC family or compatible:
    o "atmel,at91sam9260"
    o "atmel,at91sam9261"
    o "atmel,at91sam9263"
    o "atmel,at91sam9x5" for the 5 series, shall be extended with the specific
      SoC compatible:
       - "atmel,at91sam9g15"
       - "atmel,at91sam9g25"
       - "atmel,at91sam9g35"
       - "atmel,at91sam9x25"
       - "atmel,at91sam9x35"
    o "atmel,at91sam9g20"
    o "atmel,at91sam9g45"
    o "atmel,at91sam9n12"
    o "atmel,at91sam9rl"
    o "atmel,at91sam9xe"
 * "atmel,sama5" for SoCs using a Cortex-A5, shall be extended with the specific
   SoC family:
    o "atmel,sama5d3" shall be extended with the specific SoC compatible:
       - "atmel,sama5d31"
       - "atmel,sama5d33"
       - "atmel,sama5d34"
       - "atmel,sama5d35"
       - "atmel,sama5d36"
    o "atmel,sama5d4" shall be extended with the specific SoC compatible:
       - "atmel,sama5d41"
       - "atmel,sama5d42"
       - "atmel,sama5d43"
       - "atmel,sama5d44"

PIT Timer required properties:
- compatible: Should be "atmel,at91sam9260-pit"
- reg: Should contain registers location and length
- interrupts: Should contain interrupt for the PIT which is the IRQ line
  shared across all System Controller members.

System Timer (ST) required properties:
- compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
- reg: Should contain registers location and length
- interrupts: Should contain interrupt for the ST which is the IRQ line
  shared across all System Controller members.
Its subnodes can be:
- watchdog: compatible should be "atmel,at91rm9200-wdt"

TC/TCLIB Timer required properties:
- compatible: Should be "atmel,<chip>-tcb".
  <chip> can be "at91rm9200" or "at91sam9x5"
- reg: Should contain registers location and length
- interrupts: Should contain all interrupts for the TC block
  Note that you can specify several interrupt cells if the TC
  block has one interrupt per channel.
- clock-names: tuple listing input clock names.
	Required elements: "t0_clk"
	Optional elements: "t1_clk", "t2_clk"
- clocks: phandles to input clocks.

Examples:

One interrupt per TC block:
	tcb0: timer@fff7c000 {
		compatible = "atmel,at91rm9200-tcb";
		reg = <0xfff7c000 0x100>;
		interrupts = <18 4>;
		clocks = <&tcb0_clk>;
		clock-names = "t0_clk";
	};

One interrupt per TC channel in a TC block:
	tcb1: timer@fffdc000 {
		compatible = "atmel,at91rm9200-tcb";
		reg = <0xfffdc000 0x100>;
		interrupts = <26 4 27 4 28 4>;
		clocks = <&tcb1_clk>;
		clock-names = "t0_clk";
	};

RSTC Reset Controller required properties:
- compatible: Should be "atmel,<chip>-rstc".
  <chip> can be "at91sam9260" or "at91sam9g45"
- reg: Should contain registers location and length

Example:

	rstc@fffffd00 {
		compatible = "atmel,at91sam9260-rstc";
		reg = <0xfffffd00 0x10>;
	};

RAMC SDRAM/DDR Controller required properties:
- compatible: Should be "atmel,at91rm9200-sdramc", "syscon"
			"atmel,at91sam9260-sdramc",
			"atmel,at91sam9g45-ddramc",
			"atmel,sama5d3-ddramc",
- reg: Should contain registers location and length

Examples:

	ramc0: ramc@ffffe800 {
		compatible = "atmel,at91sam9g45-ddramc";
		reg = <0xffffe800 0x200>;
	};

SHDWC Shutdown Controller

required properties:
- compatible: Should be "atmel,<chip>-shdwc".
  <chip> can be "at91sam9260", "at91sam9rl" or "at91sam9x5".
- reg: Should contain registers location and length

optional properties:
- atmel,wakeup-mode: String, operation mode of the wakeup mode.
  Supported values are: "none", "high", "low", "any".
- atmel,wakeup-counter: Counter on Wake-up 0 (between 0x0 and 0xf).

optional at91sam9260 properties:
- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.

optional at91sam9rl properties:
- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.
- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.

optional at91sam9x5 properties:
- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.

Example:

	rstc@fffffd00 {
		compatible = "atmel,at91sam9260-rstc";
		reg = <0xfffffd00 0x10>;
	};

Special Function Registers (SFR)

Special Function Registers (SFR) manage specific aspects of the integrated
memory, bridge implementations, processor and other functionality not controlled
elsewhere.

required properties:
- compatible: Should be "atmel,<chip>-sfr", "syscon".
  <chip> can be "sama5d3" or "sama5d4".
- reg: Should contain registers location and length

	sfr@f0038000 {
		compatible = "atmel,sama5d3-sfr", "syscon";
		reg = <0xf0038000 0x60>;
	};