From mboxrd@z Thu Jan 1 00:00:00 1970 From: alexandre.belloni@free-electrons.com (Alexandre Belloni) Date: Thu, 19 Oct 2017 13:14:17 +0200 Subject: [PATCH v2 1/5] dt-bindings: iio: at91-sama5d2_adc: add optional dma property In-Reply-To: <20171013215142.vlfhzzzetmc7resq@rob-hp-laptop> References: <1507703732-29175-1-git-send-email-eugen.hristev@microchip.com> <1507703732-29175-2-git-send-email-eugen.hristev@microchip.com> <20171013215142.vlfhzzzetmc7resq@rob-hp-laptop> Message-ID: <20171019111417.7rzdnkvtukzzhl2u@piout.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 13/10/2017 at 16:51:42 -0500, Rob Herring wrote: > On Wed, Oct 11, 2017 at 09:35:28AM +0300, Eugen Hristev wrote: > > Added property for DMA configuration of the device. > > > > Signed-off-by: Eugen Hristev > > --- > > Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt | 7 +++++++ > > 1 file changed, 7 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt > > index 552e7a8..5f94d479 100644 > > --- a/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt > > +++ b/Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt > > @@ -17,6 +17,11 @@ Required properties: > > This property uses the IRQ edge types values: IRQ_TYPE_EDGE_RISING , > > IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH > > > > +Optional properties: > > + - dmas: Phandle to dma channel for the ADC. > > + See ../../dma/dma.txt for details. > > + - dma-names: Must be "rx" when dmas property is being used. > > -names is pointless when there is only one. > You didn't reply to the question I had previously about that: What if at some point, we have multiple dmas in the same binding? -- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com