From 6e10d19b145747c9667d40b7cf079b42d33c4c28 Mon Sep 17 00:00:00 2001 From: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Date: Fri, 22 Sep 2017 09:31:31 +0200 Subject: [PATCH] dt-bindings: stm32-dma: add a property to handle STM32 DMAMUX STM32 DMA controller has to exposed its number of request line to be addressed via STM32 DMAMUX. Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com> --- Documentation/devicetree/bindings/dma/stm32-dma.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/dma/stm32-dma.txt b/Documentation/devicetree/bindings/dma/stm32-dma.txt index 4408af693d0cc..77542e1c7bde6 100644 --- a/Documentation/devicetree/bindings/dma/stm32-dma.txt +++ b/Documentation/devicetree/bindings/dma/stm32-dma.txt @@ -13,6 +13,7 @@ Required properties: - #dma-cells : Must be <4>. See DMA client paragraph for more details. Optional properties: +- dma-requests : Number of DMA requests supported. - resets: Reference to a reset controller asserting the DMA controller - st,mem2mem: boolean; if defined, it indicates that the controller supports memory-to-memory transfer @@ -34,12 +35,13 @@ Example: #dma-cells = <4>; st,mem2mem; resets = <&rcc 150>; + dma-requests = <8>; }; * DMA client DMA clients connected to the STM32 DMA controller must use the format -described in the dma.txt file, using a five-cell specifier for each +described in the dma.txt file, using a four-cell specifier for each channel: a phandle to the DMA controller plus the following four integer cells: 1. The channel id -- GitLab