Documentation/devicetree/bindings/arm/atmel-at91.txt

   1 Atmel AT91 device tree bindings.
   2 ================================
   3
   4 PIT Timer required properties:
   5 - compatible: Should be "atmel,at91sam9260-pit"
   6 - reg: Should contain registers location and length
   7 - interrupts: Should contain interrupt for the PIT which is the IRQ line
   8   shared across all System Controller members.
   9
  10 System Timer (ST) required properties:
  11 - compatible: Should be "atmel,at91rm9200-st"
  12 - reg: Should contain registers location and length
  13 - interrupts: Should contain interrupt for the ST which is the IRQ line
  14   shared across all System Controller members.
  15
  16 TC/TCLIB Timer required properties:
  17 - compatible: Should be "atmel,<chip>-tcb".
  18   <chip> can be "at91rm9200" or "at91sam9x5"
  19 - reg: Should contain registers location and length
  20 - interrupts: Should contain all interrupts for the TC block
  21   Note that you can specify several interrupt cells if the TC
  22   block has one interrupt per channel.
  23 - clock-names: tuple listing input clock names.
  24         Required elements: "t0_clk"
  25         Optional elements: "t1_clk", "t2_clk"
  26 - clocks: phandles to input clocks.
  27
  28 Examples:
  29
  30 One interrupt per TC block:
  31         tcb0: timer@fff7c000 {
  32                 compatible = "atmel,at91rm9200-tcb";
  33                 reg = <0xfff7c000 0x100>;
  34                 interrupts = <18 4>;
  35                 clocks = <&tcb0_clk>;
  36                 clock-names = "t0_clk";
  37         };
  38
  39 One interrupt per TC channel in a TC block:
  40         tcb1: timer@fffdc000 {
  41                 compatible = "atmel,at91rm9200-tcb";
  42                 reg = <0xfffdc000 0x100>;
  43                 interrupts = <26 4 27 4 28 4>;
  44                 clocks = <&tcb1_clk>;
  45                 clock-names = "t0_clk";
  46         };
  47
  48 RSTC Reset Controller required properties:
  49 - compatible: Should be "atmel,<chip>-rstc".
  50   <chip> can be "at91sam9260" or "at91sam9g45"
  51 - reg: Should contain registers location and length
  52
  53 Example:
  54
  55         rstc@fffffd00 {
  56                 compatible = "atmel,at91sam9260-rstc";
  57                 reg = <0xfffffd00 0x10>;
  58         };
  59
  60 RAMC SDRAM/DDR Controller required properties:
  61 - compatible: Should be "atmel,at91rm9200-sdramc",
  62                         "atmel,at91sam9260-sdramc",
  63                         "atmel,at91sam9g45-ddramc",
  64 - reg: Should contain registers location and length
  65   For at91sam9263 and at91sam9g45 you must specify 2 entries.
  66
  67 Examples:
  68
  69         ramc0: ramc@ffffe800 {
  70                 compatible = "atmel,at91sam9g45-ddramc";
  71                 reg = <0xffffe800 0x200>;
  72         };
  73
  74         ramc0: ramc@ffffe400 {
  75                 compatible = "atmel,at91sam9g45-ddramc";
  76                 reg = <0xffffe400 0x200
  77                        0xffffe600 0x200>;
  78         };
  79
  80 SHDWC Shutdown Controller
  81
  82 required properties:
  83 - compatible: Should be "atmel,<chip>-shdwc".
  84   <chip> can be "at91sam9260", "at91sam9rl" or "at91sam9x5".
  85 - reg: Should contain registers location and length
  86
  87 optional properties:
  88 - atmel,wakeup-mode: String, operation mode of the wakeup mode.
  89   Supported values are: "none", "high", "low", "any".
  90 - atmel,wakeup-counter: Counter on Wake-up 0 (between 0x0 and 0xf).
  91
  92 optional at91sam9260 properties:
  93 - atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.
  94
  95 optional at91sam9rl properties:
  96 - atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.
  97 - atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.
  98
  99 optional at91sam9x5 properties:
 100 - atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.
 101
 102 Example:
 103
 104         rstc@fffffd00 {
 105                 compatible = "atmel,at91sam9260-rstc";
 106                 reg = <0xfffffd00 0x10>;
 107         };