Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753906Ab3GIM3V (ORCPT ); Tue, 9 Jul 2013 08:29:21 -0400 Received: from mail-we0-f169.google.com ([74.125.82.169]:48325 "EHLO mail-we0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753782Ab3GIM3T (ORCPT ); Tue, 9 Jul 2013 08:29:19 -0400 From: Richard Genoud To: Mark Brown , Nicolas Ferre , Liam Girdwood Cc: Bo Shen , Lars-Peter Clausen , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, devicetree-discuss@lists.ozlabs.org, Richard Genoud Subject: [PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding Date: Tue, 9 Jul 2013 14:28:45 +0200 Message-Id: <1373372929-17800-4-git-send-email-richard.genoud@gmail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1373372929-17800-1-git-send-email-richard.genoud@gmail.com> References: <1373290193-25300-1-git-send-email-richard.genoud@gmail.com> <1373372929-17800-1-git-send-email-richard.genoud@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1872 Lines: 53 As atmel-ssc can be used with DMA, the documentation should be updated. Also, a configuration DMA example is given. Signed-off-by: Richard Genoud --- .../devicetree/bindings/misc/atmel-ssc.txt | 24 ++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt b/Documentation/devicetree/bindings/misc/atmel-ssc.txt index 38e51ad..96958ca 100644 --- a/Documentation/devicetree/bindings/misc/atmel-ssc.txt +++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt @@ -6,10 +6,30 @@ Required properties: - atmel,at91sam9g45-ssc: support dma transfer - reg: Should contain SSC registers location and length - interrupts: Should contain SSC interrupt +For dma transfer: +- dmas: DMA specifier, consisting of a phandle to DMA controller node, + the memory interface and SSC DMA channel ID (for tx and rx). + See Documentation/devicetree/bindings/dma/atmel-dma.txt for details. +- dma-names: Must be "tx", "rx". -Example: + +Examples: ssc0: ssc@fffbc000 { compatible = "atmel,at91rm9200-ssc"; reg = <0xfffbc000 0x4000>; - interrupts = <14 4 5>; + interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>; }; + + +ssc0: ssc@f0010000 { + compatible = "atmel,at91sam9g45-ssc"; + reg = <0xf0010000 0x4000>; + interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>; + dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(13)>, + <&dma0 1 AT91_DMA_CFG_PER_ID(14)>; + dma-names = "tx", "rx"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>; + status = "disabled"; +}; + -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/