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

From	Rob Herring <robh@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle STM32 DMAMUX
Date	2017-06-26 21:40 +0200
Message-ID	<tWI1A-6sb-29@gated-at.bofh.it> (permalink)
References	<tVwvv-2AS-3@gated-at.bofh.it> <tVwvv-2AS-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Fri, Jun 23, 2017 at 03:00:51PM +0200, Pierre-Yves MORDRET wrote:
> 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.

Won't this be obvious looking at the bindings for clients?

In any case, this should be implied by the compatible string.

Rob

Thread

[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

csiph-web