Subject: Re: [PATCH V2 1/3] dt-bindings: spi: Convert spi-slave-mt27xx to json-schema

From: Rob Herring <[email-masked]>
Date: Fri, 21 Jan 2022 18:53:11 -0600

On Wed, Jan 12, 2022 at 06:36:07PM +0800, Leilk Liu wrote:
> Convert Mediatek ARM SOC's SPI Slave controller binding
> to json-schema format.
> 
> Signed-off-by: Leilk Liu <[email-masked]>
> ---
>  .../spi/mediatek,spi-slave-mt27xx.yaml        | 73 +++++++++++++++++++
>  .../bindings/spi/spi-slave-mt27xx.txt         | 33 ---------
>  2 files changed, 73 insertions(+), 33 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/spi/mediatek,spi-slave-mt27xx.yaml
>  delete mode 100644 Documentation/devicetree/bindings/spi/spi-slave-mt27xx.txt
> 
> diff --git a/Documentation/devicetree/bindings/spi/mediatek,spi-slave-mt27xx.yaml b/Documentation/devicetree/bindings/spi/mediatek,spi-slave-mt27xx.yaml
> new file mode 100644
> index 000000000000..3364fff08cca
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/mediatek,spi-slave-mt27xx.yaml
> @@ -0,0 +1,73 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/mediatek,spi-slave-mt27xx.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SPI Slave controller for MediaTek ARM SoCs
> +
> +maintainers:
> +  - Leilk Liu <[email-masked]>
> +
> +allOf:
> +  - $ref: /spi/spi-controller.yaml#
> +
> +properties:
> +  compatible:

> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt2712-spi-slave
> +      - items:
> +          - enum:
> +              - mediatek,mt8195-spi-slave

Just:

       enum:
         - mediatek,mt2712-spi-slave
         - mediatek,mt8195-spi-slave

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: clock used for the clock gate

Just 'maxItems: 1'

> +
> +  clock-names:
> +    items:
> +      - const: spi
> +
> +  assigned-clocks:
> +    maxItems: 1
> +    description: |
> +      The mux clock for the given platform.
> +
> +  assigned-clock-parents:
> +    maxItems: 1
> +    description: |
> +      The parent of mux clock for the given platform.

You can drop assigned-clocks. They are always allowed on nodes with 
'clocks'.

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/mt2712-clk.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    spi@10013000 {
> +      compatible = "mediatek,mt2712-spi-slave";
> +      reg = <0x10013000 0x100>;
> +      interrupts = <GIC_SPI 283 IRQ_TYPE_LEVEL_LOW>;
> +      clocks = <&infracfg CLK_INFRA_AO_SPI1>;
> +      clock-names = "spi";
> +      assigned-clocks = <&topckgen CLK_TOP_SPISLV_SEL>;
> +      assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL1_D2>;
> +    };

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