linux-kernel - Re: [PATCH V2 2/3] dt-bindings: spi: Convert spi-mt65xx to json-schema

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Date:   Fri, 21 Jan 2022 18:57:01 -0600
From:   Rob Herring <robh@...nel.org>
To:     Leilk Liu <leilk.liu@...iatek.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH V2 2/3] dt-bindings: spi: Convert spi-mt65xx to
 json-schema

On Wed, Jan 12, 2022 at 06:36:08PM +0800, Leilk Liu wrote:
> Convert Mediatek ARM SOC's SPI Master controller binding
> to json-schema format.
> 
> Signed-off-by: Leilk Liu <leilk.liu@...iatek.com>
> ---
>  .../bindings/spi/mediatek,spi-mt65xx.yaml     | 99 +++++++++++++++++++
>  .../devicetree/bindings/spi/spi-mt65xx.txt    | 68 -------------
>  2 files changed, 99 insertions(+), 68 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml
>  delete mode 100644 Documentation/devicetree/bindings/spi/spi-mt65xx.txt
> 
> diff --git a/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml b/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml
> new file mode 100644
> index 000000000000..71f0cf6e5d70
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml
> @@ -0,0 +1,99 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/mediatek,spi-mt65xx.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SPI Bus controller for MediaTek ARM SoCs
> +
> +maintainers:
> +  - Leilk Liu <leilk.liu@...iatek.com>
> +
> +allOf:
> +  - $ref: /spi/spi-controller.yaml#

/schemas/spi/spi-controller.yaml#

> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt7629-spi
> +          - const: mediatek,mt7622-spi
> +      - items:
> +          - enum:
> +              - mediatek,mt8516-spi
> +          - const: mediatek,mt2712-spi
> +      - items:
> +          - enum:
> +              - mediatek,mt6779-spi
> +              - mediatek,mt8192-spi
> +              - mediatek,mt8195-spi
> +          - const: mediatek,mt6765-spi

> +      - const: mediatek,mt2701-spi
> +      - const: mediatek,mt2712-spi
> +      - const: mediatek,mt6589-spi
> +      - const: mediatek,mt6765-spi
> +      - const: mediatek,mt6893-spi
> +      - const: mediatek,mt7622-spi
> +      - const: mediatek,mt8135-spi
> +      - const: mediatek,mt8173-spi
> +      - const: mediatek,mt8183-spi

All these can be 1 enum.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: clock used for the parent clock
> +      - description: clock used for the muxes clock
> +      - description: clock used for the clock gate
> +
> +  clock-names:
> +    items:
> +      - const: parent-clk
> +      - const: sel-clk
> +      - const: spi-clk
> +
> +  mediatek,pad-select:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    maxItems: 4
> +    items:
> +      enum: [0, 1, 2, 3]
> +    description:
> +      specify which pins group(ck/mi/mo/cs) spi controller used.
> +      This is an array.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +  - '#address-cells'
> +  - '#size-cells'
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/mt8173-clk.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    spi@...0a000 {
> +      compatible = "mediatek,mt8173-spi";
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      reg = <0x1100a000 0x1000>;
> +      interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>;
> +      clocks = <&topckgen CLK_TOP_SYSPLL3_D2>,
> +               <&topckgen CLK_TOP_SPI_SEL>,
> +               <&pericfg CLK_PERI_SPI0>;
> +      clock-names = "parent-clk", "sel-clk", "spi-clk";
> +      cs-gpios = <&pio 105 GPIO_ACTIVE_LOW>, <&pio 72 GPIO_ACTIVE_LOW>;
> +      mediatek,pad-select = <1>, <0>;
> +    };