Unverified Commit 78d35a20 authored by Sunny Luo's avatar Sunny Luo Committed by Mark Brown
Browse files

spi: dt-bindings: Add binding document of Amlogic SPISG controller 



The SPISG is a new communication oriented SPI controller of Amlogic, which
supports PIO, block DMA and scatter-gather DMA three operation modes.

Signed-off-by: default avatarSunny Luo <sunny.luo@amlogic.com>
Acked-by: default avatarConor Dooley <conor.dooley@microchip.com>
Signed-off-by: default avatarXianwei Zhao <xianwei.zhao@amlogic.com>
Link: https://patch.msgid.link/20250718-spisg-v5-1-b8f0f1eb93a2@amlogic.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 89be9a83

Documentation/devicetree/bindings/spi/amlogic,a4-spisg.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

# Copyright (C) 2025 Amlogic, Inc. All rights reserved

%YAML 1.2

---

$id: http://devicetree.org/schemas/spi/amlogic,a4-spisg.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Amlogic SPI Scatter-Gather Controller



maintainers:

  - Xianwei Zhao <xianwei.zhao@amlogic.com>

  - Sunny Luo <sunny.luo@amlogic.com>



allOf:

  - $ref: spi-controller.yaml#



properties:

  compatible:

    const: amlogic,a4-spisg



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    maxItems: 2



  clock-names:

    items:

      - const: core

      - const: pclk



  resets:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    spi@50000 {

        compatible = "amlogic,a4-spisg";

        reg = <0x50000 0x38>;

        interrupts = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;

        clocks = <&clkc 37>,

                 <&clkc 93>;

        clock-names = "core", "pclk";

        #address-cells = <1>;

        #size-cells = <0>;

    };