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-rw-r--r--Documentation/devicetree/bindings/serial/atmel-usart.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/atmel-usart.txt b/Documentation/devicetree/bindings/serial/atmel-usart.txt
index 2191dcb9f1da..9c5d19ac935c 100644
--- a/Documentation/devicetree/bindings/serial/atmel-usart.txt
+++ b/Documentation/devicetree/bindings/serial/atmel-usart.txt
@@ -6,6 +6,9 @@ Required properties:
additional mode or an USART new feature.
- reg: Should contain registers location and length
- interrupts: Should contain interrupt
+- clock-names: tuple listing input clock names.
+ Required elements: "usart"
+- clocks: phandles to input clocks.
Optional properties:
- atmel,use-dma-rx: use of PDC or DMA for receiving data
@@ -26,6 +29,8 @@ Example:
compatible = "atmel,at91sam9260-usart";
reg = <0xfff8c000 0x4000>;
interrupts = <7>;
+ clocks = <&usart0_clk>;
+ clock-names = "usart";
atmel,use-dma-rx;
atmel,use-dma-tx;
};
@@ -35,6 +40,8 @@ Example:
compatible = "atmel,at91sam9260-usart";
reg = <0xf001c000 0x100>;
interrupts = <12 4 5>;
+ clocks = <&usart0_clk>;
+ clock-names = "usart";
atmel,use-dma-rx;
atmel,use-dma-tx;
dmas = <&dma0 2 0x3>,