linux-kernel - Re: [PATCH v7 1/2] dt-bindings: dma: Add Loongson-1 APB DMA

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Date: Fri, 29 Mar 2024 15:40:57 +0000
From: Conor Dooley <conor@...nel.org>
To: keguang.zhang@...il.com
Cc: Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Huacai Chen <chenhuacai@...nel.org>, linux-mips@...r.kernel.org,
	dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 1/2] dt-bindings: dma: Add Loongson-1 APB DMA

On Fri, Mar 29, 2024 at 07:26:57PM +0800, Keguang Zhang via B4 Relay wrote:
> From: Keguang Zhang <keguang.zhang@...il.com>
> 
> Add devicetree binding document for Loongson-1 APB DMA.
> 
> Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
> ---
> Changes in v7:
> - Change the comptible to 'loongson,ls1*-apbdma' (suggested by Huacai Chen)
> - Update the title and description part accordingly
> - Rename the file to loongson,ls1b-apbdma.yaml
> - Add a compatible string for LS1A
> - Delete minItems of 'interrupts'
> - Change patterns of 'interrupt-names' to const
> 
> Changes in v6:
> - Change the compatible to the fallback
> - Some minor fixes
> 
> Changes in v5:
> - A newly added patch
> ---
>  .../bindings/dma/loongson,ls1b-apbdma.yaml         | 65 ++++++++++++++++++++++
>  1 file changed, 65 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/dma/loongson,ls1b-apbdma.yaml b/Documentation/devicetree/bindings/dma/loongson,ls1b-apbdma.yaml
> new file mode 100644
> index 000000000000..449da9fc2de1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/loongson,ls1b-apbdma.yaml
> @@ -0,0 +1,65 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dma/loongson,ls1b-apbdma.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Loongson-1 APB DMA Controller
> +
> +maintainers:
> +  - Keguang Zhang <keguang.zhang@...il.com>
> +
> +description:
> +  Loongson-1 APB DMA controller provides 3 independent channels for
> +  peripherals such as NAND, audio playback and capture.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: loongson,ls1b-apbdma
> +      - items:
> +          - enum:
> +              - loongson,ls1a-apbdma
> +              - loongson,ls1c-apbdma
> +          - const: loongson,ls1b-apbdma
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    description: Each channel has a dedicated interrupt line.

If there's a respin, make this an items list. If you do, you can then
drop the maxItems and description. Ideally with that change made,
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks,
Conor.

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