[PATCH v4 1/3] dt-bindings: spi: apple,spi: Add binding for Apple SPI controllers

[Mark Kettenis]

> From: Janne Grunau via B4 Relay <devnull+j.jannau.net at kernel.org>
> Date: Tue, 05 Nov 2024 09:08:29 +0100
> 
> From: Hector Martin <marcan at marcan.st>
> 
> The Apple SPI controller is present in SoCs such as the M1 (t8103) and
> M1 Pro/Max (t600x). This controller uses one IRQ and one clock, and
> doesn't need any special properties, so the binding is trivial.

Matches what is currently in use for U-Boot and OpenBSD.

> Signed-off-by: Hector Martin <marcan at marcan.st>
> Reviewed-by: Rob Herring <robh at kernel.org>
> Acked-by: Nick Chan <towinchenmi at gmail.com>
> Reviewed-by: Conor Dooley <conor.dooley at microchip.com>
> Signed-off-by: Janne Grunau <j at jannau.net>

Reviewed-by: Mark Kettenis <kettenis at openbsd.org>

> ---
>  .../devicetree/bindings/spi/apple,spi.yaml         | 62 ++++++++++++++++++++++
>  1 file changed, 62 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/apple,spi.yaml b/Documentation/devicetree/bindings/spi/apple,spi.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..7bef605a296353a62252282af4ba45a71b20b7b6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/apple,spi.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/apple,spi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Apple ARM SoC SPI controller
> +
> +allOf:
> +  - $ref: spi-controller.yaml#
> +
> +maintainers:
> +  - Hector Martin <marcan at marcan.st>
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - apple,t8103-spi
> +          - apple,t8112-spi
> +          - apple,t6000-spi
> +      - const: apple,spi
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  power-domains:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - interrupts
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/apple-aic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      spi at 39b104000 {
> +        compatible = "apple,t6000-spi", "apple,spi";
> +        reg = <0x3 0x9b104000 0x0 0x4000>;
> +        interrupt-parent = <&aic>;
> +        interrupts = <AIC_IRQ 0 1107 IRQ_TYPE_LEVEL_HIGH>;
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        clocks = <&clk>;
> +      };
> +    };
> 
> -- 
> 2.47.0
> 
> 
> 
>