From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: [PATCH 1/2] of: dma: make #dma-cells optional Date: Wed, 27 Feb 2013 18:57:57 -0600 Message-ID: <1362013078-2213-1-git-send-email-robherring2@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, devicetree-discuss@lists.ozlabs.org Cc: Rob Herring , Vinod Koul , Dan Williams , Grant Likely List-Id: devicetree@vger.kernel.org From: Rob Herring For controllers with no requests/clients (memory to memory only), the Signed-off-by: Rob Herring Cc: Vinod Koul Cc: Dan Williams Cc: Grant Likely --- Documentation/devicetree/bindings/dma/dma.txt | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/dma/dma.txt b/Documentation/devicetree/bindings/dma/dma.txt index 8f504e6..d388f06 100644 --- a/Documentation/devicetree/bindings/dma/dma.txt +++ b/Documentation/devicetree/bindings/dma/dma.txt @@ -8,9 +8,10 @@ controller. * DMA controller Required property: -- #dma-cells: Must be at least 1. Used to provide DMA controller - specific information. See DMA client binding below for - more details. +- #dma-cells: Required for controllers with requests. Optional for + memory to memory only DMA controllers. Must be at least + 1. Used to provide DMA controller specific information. + See DMA client binding below for more details. Optional properties: - dma-channels: Number of DMA channels supported by the controller. -- 1.7.10.4