linux-kernel - Re: [PATCH v2 2/4] dt-bindings: soc: sophgo: Add top misc controller of CV18XX/SG200X series SoC

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Date: Thu, 22 Feb 2024 17:33:34 -0700
From: Rob Herring <robh@...nel.org>
To: Inochi Amaoto <inochiama@...look.com>
Cc: Vinod Koul <vkoul@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Jisheng Zhang <jszhang@...nel.org>,
	Liu Gui <kenneth.liu@...hgo.com>,
	Jingbao Qiu <qiujingbao.dlmu@...il.com>, dlan@...too.org,
	dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: soc: sophgo: Add top misc controller
 of CV18XX/SG200X series SoC

On Tue, Feb 20, 2024 at 06:28:59PM +0800, Inochi Amaoto wrote:
> CV18XX/SG200X series SoCs have a special top misc system controller,
> which provides register access for several devices. In addition to
> register access, this system controller also contains some subdevices
> (such as dmamux).
> 
> Add bindings for top misc controller of CV18XX/SG200X series SoC.
> 
> Signed-off-by: Inochi Amaoto <inochiama@...look.com>
> ---
>  .../soc/sophgo/sophgo,cv1800-top-syscon.yaml  | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800-top-syscon.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800-top-syscon.yaml b/Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800-top-syscon.yaml
> new file mode 100644
> index 000000000000..29825fee66d5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800-top-syscon.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/sophgo/sophgo,cv1800-top-syscon.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sophgo CV1800/SG2000 SoC top system controller
> +
> +maintainers:
> +  - Inochi Amaoto <inochiama@...look.com>
> +
> +description:
> +  The Sophgo CV1800/SG2000 SoC top misc system controller provides
> +  register access to configure related modules.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: sophgo,cv1800-top-syscon
> +      - const: syscon
> +      - const: simple-mfd
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties:
> +  type: object
> +
> +examples:
> +  - |
> +    syscon@...0000 {
> +      compatible = "sophgo,cv1800-top-syscon",
> +                   "syscon", "simple-mfd";
> +      reg = <0x03000000 0x1000>;
> +
> +      dma-router {

Is there no defined register set you can put in 'reg' here?

> +        compatible = "sophgo,cv1800-dmamux";
> +        #dma-cells = <3>;
> +        dma-masters = <&dmac>;
> +        dma-requests = <8>;
> +      };
> +    };
> +
> +...
> --
> 2.43.2
>