From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from esa4.microchip.iphmx.com ([68.232.154.123]:32372 "EHLO esa4.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932498AbdKONIx (ORCPT ); Wed, 15 Nov 2017 08:08:53 -0500 From: Eugen Hristev To: , , , , , , , , CC: Subject: [PATCH v3 1/4] dt-bindings: iio: at91-sama5d2_adc: add optional dma property Date: Wed, 15 Nov 2017 14:56:45 +0200 Message-ID: <1510750608-8697-2-git-send-email-eugen.hristev@microchip.com> In-Reply-To: <1510750608-8697-1-git-send-email-eugen.hristev@microchip.com> References: <1510750608-8697-1-git-send-email-eugen.hristev@microchip.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org Added property for DMA configuration of the device. Signed-off-by: Eugen Hristev --- Changes in v3: None, but we discussed on the ML about whether we should have "dma-names" present in the binding even if it's only one. The helpers in the kernel to retrieve the channel info rely on the presence of this property, so I am resending the patch based on this. If another solution is better, please advise and I can try it and resend the patch. 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..6469a4c 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. + - dma-names: Must be "rx" when dmas property is being used. + See ../../dma/dma.txt for details. + 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 = ; + 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