1Atmel system registers
2
3Chipid required properties:
4- compatible: Should be "atmel,sama5d2-chipid" or "microchip,sama7g5-chipid"
5- reg : Should contain registers location and length
6
7PIT Timer required properties:
8- compatible: Should be "atmel,at91sam9260-pit"
9- reg: Should contain registers location and length
10- interrupts: Should contain interrupt for the PIT which is the IRQ line
11  shared across all System Controller members.
12
13PIT64B Timer required properties:
14- compatible: Should be "microchip,sam9x60-pit64b" or
15			"microchip,sam9x7-pit64b", "microchip,sam9x60-pit64b"
16			"microchip,sama7d65-pit64b", "microchip,sam9x60-pit64b"
17- reg: Should contain registers location and length
18- interrupts: Should contain interrupt for PIT64B timer
19- clocks: Should contain the available clock sources for PIT64B timer.
20
21System Timer (ST) required properties:
22- compatible: Should be "atmel,at91rm9200-st", "syscon", "simple-mfd"
23- reg: Should contain registers location and length
24- interrupts: Should contain interrupt for the ST which is the IRQ line
25  shared across all System Controller members.
26- clocks: phandle to input clock.
27Its subnodes can be:
28- watchdog: compatible should be "atmel,at91rm9200-wdt"
29
30RAMC SDRAM/DDR Controller required properties:
31- compatible: Should be "atmel,at91rm9200-sdramc", "syscon" or
32			"atmel,at91sam9260-sdramc" or
33			"atmel,at91sam9g45-ddramc" or
34			"atmel,sama5d3-ddramc" or
35			"microchip,sam9x60-ddramc" or
36			"microchip,sama7g5-uddrc" or
37			"microchip,sama7d65-uddrc", "microchip,sama7g5-uddrc" or
38			"microchip,sam9x7-ddramc", "atmel,sama5d3-ddramc".
39- reg: Should contain registers location and length
40
41Examples:
42
43	ramc0: ramc@ffffe800 {
44		compatible = "atmel,at91sam9g45-ddramc";
45		reg = <0xffffe800 0x200>;
46	};
47
48Security Module (SECUMOD)
49
50The Security Module macrocell provides all necessary secure functions to avoid
51voltage, temperature, frequency and mechanical attacks on the chip. It also
52embeds secure memories that can be scrambled.
53
54The Security Module also offers the PIOBU pins which can be used as GPIO pins.
55Note that they maintain their voltage during Backup/Self-refresh.
56
57required properties:
58- compatible: Should be "atmel,<chip>-secumod", "syscon".
59  <chip> can be "sama5d2".
60- reg: Should contain registers location and length
61- gpio-controller:	Marks the port as GPIO controller.
62- #gpio-cells:		There are 2. The pin number is the
63			first, the second represents additional
64			parameters such as GPIO_ACTIVE_HIGH/LOW.
65
66
67	secumod@fc040000 {
68		compatible = "atmel,sama5d2-secumod", "syscon";
69		reg = <0xfc040000 0x100>;
70		gpio-controller;
71		#gpio-cells = <2>;
72	};
73