On Thu, Oct 01, 2026 at 09:45:02AM +0800, CL Wang wrote:
> Document devicetree bindings for Andes ATCDMAC300 DMA engine
>
> ATCDMAC300 is the IP name, which is embedded in AndesCore-based
> platforms or SoCs such as AE350 and Qilai.
>
> Signed-off-by: CL Wang <[email protected]>
> Acked-by: Conor Dooley <[email protected]>
>
> ---
> Changes for v7:
> - Rebase onto the current dmaengine/next; no changes from v6
>
> Changes for v6:
> - Rebase onto dmaengine/next; no changes from v5
>
> Changes for v5:
> - No changes from v4
>
> Changes for v4:
> - Use items list format with descriptions for reg property
> as suggested by Conor Dooley
>
> Changes for v3:
> - Rename DT binding file from andestech,qilai-dma.yaml to
> andestech,ae350-dma.yaml.
> - Deprecate IP-core-based compatible usage and align with
> SoC/platform-based strings.
> - Dropped Acked-by tag from Conor Dooley due to the above change.
> ---
> .../bindings/dma/andestech,ae350-dma.yaml | 67 +++++++++++++++++++
> 1 file changed, 67 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/dma/andestech,ae350-dma.yaml
>
> diff --git a/Documentation/devicetree/bindings/dma/andestech,ae350-dma.yaml
> b/Documentation/devicetree/bindings/dma/andestech,ae350-dma.yaml
> new file mode 100644
> index 000000000000..f040a2bf7d4b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/andestech,ae350-dma.yaml
> @@ -0,0 +1,67 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dma/andestech,ae350-dma.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Andes ATCDMAC300 DMA Controller
> +
> +maintainers:
> + - CL Wang <[email protected]>
> +
> +allOf:
> + - $ref: dma-controller.yaml#
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
> + - enum:
> + - andestech,qilai-dma
> + - const: andestech,ae350-dma
> + - const: andestech,ae350-dma
> +
> + reg:
> + minItems: 1
> + items:
> + - description: DMA controller register range
> + - description: cache control in IOCP controller
> +
> + reg-names:
> + minItems: 1
> + items:
> + - const: dma
> + - const: iocp
> +
> + interrupts:
> + maxItems: 1
> +
> + "#dma-cells":
> + const: 1
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - "#dma-cells"
> +
> +additionalProperties: false
According to Documentation/devicetree/bindings/writing-bindings.rst
ref to other yaml(ref: dma-controller.yaml)
should use
unevaluatedProperties: false
Frank
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> +
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + dma-controller@f0c00000 {
> + compatible = "andestech,ae350-dma";
> + reg = <0x0 0xf0c00000 0x0 0x1000>,
> + <0x0 0xe8000000 0x0 0x10>;
> + reg-names = "dma", "iocp";
> + interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
> + #dma-cells = <1>;
> + };
> + };
> +...
> --
> 2.34.1
>
