linux-kernel - Re: [PATCH v9 1/3] dt-bindings: dmaengine: Add dma multiplexer for CV18XX/SG200X series SoC

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Message-ID: <e0f7ee39-69e4-4a03-9908-96e383586800@kernel.org>
Date: Mon, 5 Aug 2024 19:32:17 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Inochi Amaoto <inochiama@...look.com>, Vinod Koul <vkoul@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Chen Wang <unicorn_wang@...look.com>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>
Cc: dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v9 1/3] dt-bindings: dmaengine: Add dma multiplexer for
 CV18XX/SG200X series SoC

On 02/08/2024 10:32, Inochi Amaoto wrote:
> The DMA IP of Sophgo CV18XX/SG200X is based on a DW AXI CORE, with
> an additional channel remap register located in the top system control
> area. The DMA channel is exclusive to each core.
> 
> In addition, the DMA multiplexer is a subdevice of system controller,
> so this binding only contains necessary properties for the multiplexer
> itself.
> 
> Add the dmamux binding for CV18XX/SG200X series SoC.
> 
> Signed-off-by: Inochi Amaoto <inochiama@...look.com>
> ---
>  .../bindings/dma/sophgo,cv1800-dmamux.yaml    | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml

Filename should match compatible.

> 
> diff --git a/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml b/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml
> new file mode 100644
> index 000000000000..11a098ed138a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/sophgo,cv1800-dmamux.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dma/sophgo,cv1800-dmamux.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo CV1800/SG200 Series DMA multiplexer
> +
> +maintainers:
> +  - Inochi Amaoto <inochiama@...look.com>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  The DMA multiplexer of CV1800 is a subdevice of the system
> +  controller. It support mapping 8 channels, but each channel
> +  can be mapped only once.
> +



Best regards,
Krzysztof