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SubjectRe: [PATCH V2] dt-bindings: dma: fsl-edma: Convert to DT schema
From
On 26/05/2022 12:24, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@nxp.com>
>
> Convert the eDMA controller binding to DT schema.
>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>
> V2:
> Typo fix
> Correct interrupts/interrupt-names/AllOf
>
> .../devicetree/bindings/dma/fsl,edma.yaml | 140 ++++++++++++++++++
> .../devicetree/bindings/dma/fsl-edma.txt | 111 --------------
> 2 files changed, 140 insertions(+), 111 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/dma/fsl,edma.yaml
> delete mode 100644 Documentation/devicetree/bindings/dma/fsl-edma.txt
>
> diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
> new file mode 100644
> index 000000000000..0a63b0b70f98
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
> @@ -0,0 +1,140 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/dma/fsl,edma.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale enhanced Direct Memory Access(eDMA) Controller
> +
> +description: |
> + The eDMA channels have multiplex capability by programmable
> + memory-mapped registers. channels are split into two groups, called
> + DMAMUX0 and DMAMUX1, specific DMA request source can only be multiplexed
> + by any channel of certain group, DMAMUX0 or DMAMUX1, but not both.
> +
> +maintainers:
> + - Peng Fan <peng.fan@nxp.com>
> +
> +properties:
> + compatible:
> + oneOf:
> + - enum:
> + - fsl,vf610-edma
> + - fsl,imx7ulp-edma
> + - items:
> + - const: fsl,ls1028a-edma
> + - const: fsl,vf610-edma
> +

The reg and interrupts should still be there (matching the widest of
constraints).

> + "#dma-cells":
> + const: 2
> +
> + dma-channels:
> + const: 32
> +
> + clocks:
> + maxItems: 2

Also clock-names with maxItems:2

> +
> + big-endian:
> + description: |
> + If present registers and hardware scatter/gather descriptors of the
> + eDMA are implemented in big endian mode, otherwise in little mode.
> + type: boolean
> +

Best regards,
Krzysztof

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