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authorFabrice Gasnier <fabrice.gasnier@st.com>2017-01-26 15:28:32 +0100
committerJonathan Cameron <jic23@kernel.org>2017-01-28 18:25:20 +0000
commit122b5f4580519b2e2563467a6dc9ac952f1d33da (patch)
tree6362e8980a79f4a5e2a0c09d9877e7feb9bdf797 /Documentation
parent732f2dc46813821824db853e867f08b1ccabb1ab (diff)
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Documentation: dt: iio: stm32-adc: optional dma support
STM32 ADC can use dma. Add dt documentation for optional dma support. Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
index 49ed82e..5dfc88e 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -53,6 +53,11 @@ Required properties:
- #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in
Documentation/devicetree/bindings/iio/iio-bindings.txt
+Optional properties:
+- dmas: Phandle to dma channel for this ADC instance.
+ See ../../dma/dma.txt for details.
+- dma-names: Must be "rx" when dmas property is being used.
+
Example:
adc: adc@40012000 {
compatible = "st,stm32f4-adc-core";
@@ -77,6 +82,8 @@ Example:
interrupt-parent = <&adc>;
interrupts = <0>;
st,adc-channels = <8>;
+ dmas = <&dma2 0 0 0x400 0x0>;
+ dma-names = "rx";
};
...
other adc child nodes follow...
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