Re: [PATCH v6 2/9] dt-bindings: media: nxp: Add Wave6 video codec device

[Rob Herring <robh@kernel.org>]

On Wed, Jun 24, 2026 at 04:20:36PM +0900, Nas Chung wrote:
> Add documentation for the Chips&Media Wave6 video codec on NXP i.MX SoCs.
> 
> The hardware contains one control register region and four interface
> register regions for a shared video processing engine. The control region
> manages shared resources such as firmware memory, while each interface
> region has its own MMIO range and interrupt.
> 
> The control region and each interface region are distinct DMA requesters
> and can be associated with separate IOMMU stream IDs. Represent the
> control region as the parent node and the interface register regions as
> child nodes to describe these resources.
> 
> Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
> ---
>  .../bindings/media/nxp,imx95-vpu.yaml         | 163 ++++++++++++++++++
>  MAINTAINERS                                   |   7 +
>  2 files changed, 170 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/nxp,imx95-vpu.yaml
> 
> diff --git a/Documentation/devicetree/bindings/media/nxp,imx95-vpu.yaml b/Documentation/devicetree/bindings/media/nxp,imx95-vpu.yaml
> new file mode 100644
> index 000000000000..9a5ca53e15a3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/nxp,imx95-vpu.yaml
> @@ -0,0 +1,163 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/nxp,imx95-vpu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Chips&Media Wave6 Series multi-standard codec IP on NXP i.MX SoCs
> +
> +maintainers:
> +  - Nas Chung <nas.chung@chipsnmedia.com>
> +  - Jackson Lee <jackson.lee@chipsnmedia.com>
> +
> +description:
> +  The Chips&Media Wave6 codec IP is a multi-standard video encoder/decoder.
> +  On NXP i.MX SoCs, the Wave6 codec IP exposes one control register region and
> +  four interface register regions for a shared video processing engine.
> +  The parent node describes the control region, which has its own MMIO range and
> +  manages shared resources such as firmware memory. The child nodes describe the
> +  interface register regions. Each interface region has its own MMIO range and
> +  interrupt.
> +  The control region and the interface regions are distinct DMA requesters.
> +  The control region and each interface region can be associated with separate
> +  IOMMU stream IDs, allowing DMA isolation between them.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - nxp,imx95-vpu
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: VPU core clock
> +      - description: VPU associated block clock
> +
> +  clock-names:
> +    items:
> +      - const: core
> +      - const: vpublk
> +
> +  power-domains:
> +    items:
> +      - description: Main VPU power domain
> +      - description: Performance power domain
> +
> +  power-domain-names:
> +    items:
> +      - const: vpu
> +      - const: perf
> +
> +  memory-region:
> +    maxItems: 1
> +
> +  sram:
> +    $ref: /schemas/types.yaml#/definitions/phandle

Already has a type. You just need to define how many phandles (maxItems: 1).

> +    description:
> +      phandle to the SRAM node used to store reference data, reducing DMA
> +      memory bandwidth.

Drop 'phandle to the SRAM node'

Rob