[PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle STM32 DMAMUX

From	Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle STM32 DMAMUX
Date	2017-06-23 15:10 +0200
Message-ID	<tVwvv-2AS-1@gated-at.bofh.it> (permalink)
References	<tVwvv-2AS-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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This patch adds an optional property needed for STM32 DMA controller
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>
---
 Version history:
    v2:
        * Typo fix
---
---
 Documentation/devicetree/bindings/dma/stm32-dma.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/dma/stm32-dma.txt b/Documentation/devicetree/bindings/dma/stm32-dma.txt
index 4408af6..340c918 100644
--- a/Documentation/devicetree/bindings/dma/stm32-dma.txt
+++ b/Documentation/devicetree/bindings/dma/stm32-dma.txt
@@ -16,6 +16,9 @@ Optional properties:
 - 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
+- st,dmamux: boolean; if defined, it indicates that the controller is behind a
+  DMA multiplexer. In that case, using dma instances doesn't work for DMA
+  clients. They have to use dma-router instances.
 
 Example:
 
@@ -39,7 +42,7 @@ Example:
 * 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
-- 
1.9.1

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[PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle STM32 DMAMUX Pierre-Yves MORDRET <pierre-yves.mordret@st.com> - 2017-06-23 15:10 +0200
  Re: [PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle  STM32 DMAMUX Rob Herring <robh@kernel.org> - 2017-06-26 21:40 +0200
    Re: [PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle  STM32 DMAMUX Pierre Yves MORDRET <pierre-yves.mordret@st.com> - 2017-06-27 11:00 +0200

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