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[4/7] Documentation: dt: iio: stm32-adc: optional dma support

Message ID 1484832854-6314-5-git-send-email-fabrice.gasnier@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Fabrice Gasnier Jan. 19, 2017, 1:34 p.m. UTC 
STM32 ADC can use dma. Add dt documentation for optional dma support.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
 Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Rob Herring (Arm) Jan. 21, 2017, 8:54 p.m. UTC | #1 
On Thu, Jan 19, 2017 at 02:34:11PM +0100, Fabrice Gasnier wrote:
> STM32 ADC can use dma. Add dt documentation for optional dma support.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
> ---
>  Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 7 +++++++
>  1 file changed, 7 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>
diff mbox

Patch

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...