linux-kernel - Re: [PATCH v13 1/4] dt-bindings: dmaengine: Add doc for tegra gpcdma

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Date:   Sun, 28 Nov 2021 10:06:20 -0600
From:   Rob Herring <robh@...nel.org>
To:     Akhil R <akhilrajeev@...dia.com>
Cc:     dan.j.williams@...el.com, devicetree@...r.kernel.org,
        dmaengine@...r.kernel.org, jonathanh@...dia.com,
        kyarlagadda@...dia.com, ldewangan@...dia.com,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
        p.zabel@...gutronix.de, rgumasta@...dia.com,
        thierry.reding@...il.com, vkoul@...nel.org
Subject: Re: [PATCH v13 1/4] dt-bindings: dmaengine: Add doc for tegra gpcdma

On Mon, Nov 22, 2021 at 02:58:09PM +0530, Akhil R wrote:
> Add DT binding document for Nvidia Tegra GPCDMA controller.
> 
> Signed-off-by: Rajesh Gumasta <rgumasta@...dia.com>
> Signed-off-by: Akhil R <akhilrajeev@...dia.com>
> Reviewed-by: Jon Hunter <jonathanh@...dia.com>
> ---
>  .../bindings/dma/nvidia,tegra186-gpc-dma.yaml      | 111 +++++++++++++++++++++
>  1 file changed, 111 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> 
> diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> new file mode 100644
> index 0000000..3a5a70d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml
> @@ -0,0 +1,111 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dma/nvidia,tegra186-gpc-dma.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVIDIA Tegra GPC DMA Controller Device Tree Bindings
> +
> +description: |
> +  The Tegra General Purpose Central (GPC) DMA controller is used for faster
> +  data transfers between memory to memory, memory to device and device to
> +  memory.
> +
> +maintainers:
> +  - Jon Hunter <jonathanh@...dia.com>
> +  - Rajesh Gumasta <rgumasta@...dia.com>
> +
> +allOf:
> +  - $ref: "dma-controller.yaml#"
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: nvidia,tegra186-gpcdma
> +      - items:
> +         - const: nvidia,tegra186-gpcdma
> +         - const: nvidia,tegra194-gpcdma

Still not how 'compatible' works nor what I wrote out for you.

Rob