From mboxrd@z Thu Jan 1 00:00:00 1970 From: jic23@kernel.org (Jonathan Cameron) Date: Sat, 28 Jan 2017 18:39:58 +0000 Subject: [PATCH v2 4/7] Documentation: dt: iio: stm32-adc: optional dma support In-Reply-To: <1485440915-30119-5-git-send-email-fabrice.gasnier@st.com> References: <1485440915-30119-1-git-send-email-fabrice.gasnier@st.com> <1485440915-30119-5-git-send-email-fabrice.gasnier@st.com> Message-ID: <467e84b4-58f7-a650-b233-46c5fc8232ee@kernel.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 26/01/17 14:28, Fabrice Gasnier wrote: > STM32 ADC can use dma. Add dt documentation for optional dma support. > > Signed-off-by: Fabrice Gasnier > Acked-by: Rob Herring Applied. > --- > 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 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 at 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... >