X-Git-Url: http://git.agner.ch/gitweb/?a=blobdiff_plain;f=Documentation%2Fdevicetree%2Fbindings%2Fserial%2Fatmel-usart.txt;h=17c1042b2df895da595191fa8d8acd132fd546e8;hb=b7e70ca9c7d7f049bba8047d7ab49966fd5e9e9d;hp=9c5d19ac935c335d88400b6724aaff75b5c99712;hpb=ae693400bd2dd438f2bbacbb925233ba1dee9236;p=linux.git

diff --git a/Documentation/devicetree/bindings/serial/atmel-usart.txt b/Documentation/devicetree/bindings/serial/atmel-usart.txt
index 9c5d19ac935c..17c1042b2df8 100644
--- a/Documentation/devicetree/bindings/serial/atmel-usart.txt
+++ b/Documentation/devicetree/bindings/serial/atmel-usart.txt
@@ -13,6 +13,8 @@ Required properties:
 Optional properties:
 - atmel,use-dma-rx: use of PDC or DMA for receiving data
 - atmel,use-dma-tx: use of PDC or DMA for transmitting data
+- rts-gpios: specify a GPIO for RTS line. It will use specified PIO instead of the peripheral
+  function pin for the USART RTS feature. If unsure, don't specify this property.
 - add dma bindings for dma transfer:
 	- dmas: DMA specifier, consisting of a phandle to DMA controller node,
 		memory peripheral interface and USART DMA channel ID, FIFO configuration.
@@ -33,6 +35,7 @@ Example:
 		clock-names = "usart";
 		atmel,use-dma-rx;
 		atmel,use-dma-tx;
+		rts-gpios = <&pioD 15 0>;
 	};
 
 - use DMA: