From 122b5f4580519b2e2563467a6dc9ac952f1d33da Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Thu, 26 Jan 2017 15:28:32 +0100 Subject: 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 Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt index 49ed82e89870..5dfc88ec24a4 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... -- cgit v1.2.3