iio: at91: document ADC clock properties

Document the clock properties required by the at91 ADC driver.

Signed-off-by: Boris Brezillon <b.brezillon@overkiz.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/Documentation/devicetree/bindings/arm/atmel-adc.txt b/Documentation/devicetree/bindings/arm/atmel-adc.txt
index d1061469f63d9efec6a7265892bdbd6d9459d021..9a1175b46f49e88ee240013c72ce4d55a5aa673e 100644 (file)
--- a/Documentation/devicetree/bindings/arm/atmel-adc.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-adc.txt
@@ -5,6 +5,9 @@ Required properties:
     <chip> can be "at91sam9260", "at91sam9g45" or "at91sam9x5"
   - reg: Should contain ADC registers location and length
   - interrupts: Should contain the IRQ line for the ADC
+  - clock-names: tuple listing input clock names.
+       Required elements: "adc_clk", "adc_op_clk".
+  - clocks: phandles to input clocks.
   - atmel,adc-channels-used: Bitmask of the channels muxed and enable for this
     device
   - atmel,adc-startup-time: Startup Time of the ADC in microseconds as
@@ -44,6 +47,8 @@ adc0: adc@fffb0000 {
        compatible = "atmel,at91sam9260-adc";
        reg = <0xfffb0000 0x100>;
        interrupts = <20 4>;
+       clocks = <&adc_clk>, <&adc_op_clk>;
+       clock-names = "adc_clk", "adc_op_clk";
        atmel,adc-channel-base = <0x30>;
        atmel,adc-channels-used = <0xff>;
        atmel,adc-drdy-mask = <0x10000>;