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-rw-r--r--Documentation/devicetree/bindings/arm/atmel-at91.txt37
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diff --git a/Documentation/devicetree/bindings/arm/atmel-at91.txt b/Documentation/devicetree/bindings/arm/atmel-at91.txt
index 16f60b41c147..4949e805f7fc 100644
--- a/Documentation/devicetree/bindings/arm/atmel-at91.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-at91.txt
@@ -1,6 +1,43 @@
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"
+ * "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