linux-kernel - Re: [PATCH 1/2] dt-bindings: spi: Add support for ATCSPI200 SPI controller

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Message-ID: <20251112-reoccur-quill-2144810ce062@spud>
Date: Wed, 12 Nov 2025 19:02:56 +0000
From: Conor Dooley <conor@...nel.org>
To: CL Wang <cl634@...estech.com>
Cc: broonie@...nel.org, linux-spi@...r.kernel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, tim609@...estech.com
Subject: Re: [PATCH 1/2] dt-bindings: spi: Add support for ATCSPI200 SPI
 controller

On Wed, Nov 12, 2025 at 11:47:23AM +0800, CL Wang wrote:
> Document devicetree bindings for Andes ATCSPI200 SPI controller.
> 
> Signed-off-by: CL Wang <cl634@...estech.com>
> ---
>  .../bindings/spi/andestech,qilai-spi.yaml     | 84 +++++++++++++++++++
>  MAINTAINERS                                   |  6 ++
>  2 files changed, 90 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml b/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
> new file mode 100644
> index 000000000000..db065062a2af
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
> @@ -0,0 +1,84 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/andestech,qilai-spi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Andes ATCSPI200 SPI controller

Is this a spi controller or a qspi controller?

> +
> +maintainers:
> +  - CL Wang <cl634@...estech.com>
> +
> +properties:
> +  compatible:
> +    const: andestech,qilai-spi
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  num-cs:
> +    description: Number of chip selects supported
> +    maxItems: 1
> +
> +  dmas:
> +    items:
> +      - description: Transmit FIFO DMA channel
> +      - description: Receive FIFO DMA channel
> +
> +  dma-names:
> +    items:
> +      - const: spi_tx
> +      - const: spi_rx

Drop the "spi_", since it's obvious that it belongs to this controller.

> +
> +patternProperties:
> +  "@[0-9a-f]+$":
> +    type: object
> +    additionalProperties: true
> +
> +    properties:
> +      spi-rx-bus-width:
> +        enum: [1, 4]
> +
> +      spi-tx-bus-width:
> +        enum: [1, 4]
> +
> +allOf:
> +  - $ref: spi-controller.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - dmas
> +  - dma-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      spi@...00000 {
> +        compatible = "andestech,qilai-spi";
> +        reg = <0x0 0xf0b00000 0x0 0x1000>;
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        clocks = <&clk_spi>;
> +        dmas = <&dma0 0>, <&dma0 1>;
> +        dma-names = "spi_tx", "spi_rx";
> +
> +        flash@0 {
> +          compatible = "jedec,spi-nor";
> +          reg = <0x0>;
> +          spi-tx-bus-width = <0x4>;
> +          spi-rx-bus-width = <0x4>;
> +          spi-cpol;
> +          spi-cpha;
> +        };
> +      };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index dd99c073a369..55e31996df03 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1803,6 +1803,12 @@ S:	Supported
>  F:	drivers/clk/analogbits/*
>  F:	include/linux/clk/analogbits*
>  
> +ANDES ATCSPI200 SPI DRIVER
> +M:	CL Wang <cl634@...estech.com>
> +S:	Supported
> +F:	Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml

> +F:	drivers/spi/spi-atcspi200.c

This driver does not exist at this point, so you shouldn't be adding it
here.
Cheers,
Conor.

pw-bot: changes-requested

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