Messages in this thread | | | Date | Thu, 17 Aug 2017 10:10:59 -0500 | From | Rob Herring <> | Subject | Re: [PATCH 1/3] Documentation: dt: iio: at91-sama5d2_adc: add optional dma property |
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On Thu, Aug 10, 2017 at 03:34:57PM +0300, Eugen Hristev wrote: > Added property for DMA configuration of the device.
"dt-bindings: iio: ..." is preferred for subject.
> > Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> > --- > 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..5f94d47 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's only one.
> + > Example: > > adc: adc@fc030000 { > @@ -31,4 +36,6 @@ adc: adc@fc030000 { > vddana-supply = <&vdd_3v3_lp_reg>; > vref-supply = <&vdd_3v3_lp_reg>; > atmel,trigger-edge-type = <IRQ_TYPE_EDGE_BOTH>; > + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>; > + dma-names = "rx"; > } > -- > 2.7.4 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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