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authorBoris BREZILLON <b.brezillon@overkiz.com>2013-12-17 16:22:20 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-17 17:38:25 (GMT)
commit8be3da65d9222e1e63b7f9d001e872947588946f (patch)
tree635932d6be0af7d0ea8927fe8115f4843d4bbbf3 /Documentation/devicetree/bindings/serial
parent5855b2104b01e70e9db4352fce82689b214a6af2 (diff)
tty/serial: at91: document clock properties
Document the clock properties required by the at91 usart driver. Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/serial')
-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 2191dcb..9c5d19a 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>,

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