linux-kernel - Re: [PATCH 1/3] dt-bindings: spi: axiado,ax3000-spi: Add binding for Axiado SPI DB controller

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Message-ID: <20250915-activate-camera-a07ee5ee36ca@spud>
Date: Mon, 15 Sep 2025 18:22:45 +0100
From: Conor Dooley <conor@...nel.org>
To: Vladimir Moravcevic <vmoravcevic@...ado.com>
Cc: Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Harshit Shah <hshah@...ado.com>,
	Tzu-Hao Wei <twei@...ado.com>,
	Axiado Reviewers <linux-maintainer@...ado.com>,
	linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: spi: axiado,ax3000-spi: Add binding for
 Axiado SPI DB controller

On Mon, Sep 15, 2025 at 06:11:55AM -0700, Vladimir Moravcevic wrote:
> Add documentation for Axiado Digital Block SPI controller.
> 
> Signed-off-by: Vladimir Moravcevic <vmoravcevic@...ado.com>
> ---
>  .../devicetree/bindings/spi/axiado,ax3000-spi.yaml | 62 ++++++++++++++++++++++
>  1 file changed, 62 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/axiado,ax3000-spi.yaml b/Documentation/devicetree/bindings/spi/axiado,ax3000-spi.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..18e4b002ac99ecdd70d724680e24f2867c82dd42
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/axiado,ax3000-spi.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/axiado,ax3000-spi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Axiado AX3000 SoC SPI controller
> +
> +maintainers:
> +  - Vladimir Moravcevic <vmoravcevic@...ado.com>
> +
> +allOf:
> +  - $ref: spi-controller.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - axiado,ax3000-spi
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: ref_clk

Just call this clock "ref", the _clk is redundant.

> +      - const: pclk
> +
> +  clocks:
> +    maxItems: 2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clock-names
> +  - clocks
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +   #include <dt-bindings/interrupt-controller/irq.h>
> +   #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +   soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      spi0: spi@...10000 {
> +         compatible = "axiado,ax3000-spi";
> +         reg = <0x00 0x80510000 0x00 0x1000>;
> +         clock-names = "ref_clk", "pclk";
> +         clocks = <&spi_clk &spi_clk>;

Why are these both the same? Additionally, please style this as "<&foo>, <&bar>"
with each clock in its own <>.

Cheers,
Conor.

> +         interrupt-parent = <&gic500>;
> +         interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
> +         num-cs = <1>;
> +      };
> +   };
> +...
> 
> -- 
> 2.25.1
> 

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