# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clauseyy
%YAML 1.2
---
$id: http://devicetree.org/schemas/spi/spi-rockchip-slave.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Rockchip SPI Slave Controller

description:
  The Rockchip SPI Slave controller is used to interface with SPI Master Controller.

allOf:
  - $ref: "spi-controller.yaml#"

maintainers:
  - Heiko Stuebner <heiko@sntech.de>

# Everything else is described in the common file
properties:
  compatible:
    oneOf:
      - const: rockchip,spi-slave

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: transfer-clock
      - description: peripheral clock

  clock-names:
    items:
      - const: spiclk
      - const: apb_pclk
      - const: sclk_in

  dmas:
    items:
      - description: TX DMA Channel
      - description: RX DMA Channel

  dma-names:
    items:
      - const: tx
      - const: rx

  rockchip,cs-inactive-disable:
    description: Add this property to disable the cs inactive interrupt for spi
      slave.
    type: boolean

  ready-gpios:
    description: GPIO spec for the spi slave ready signal.
    maxItems: 1

  rockchip,autosuspend-delay-ms:
    default: 0
    description: Set pm runtime autosuspend value in milliseconds.

  rockchip,sram:
    description: Specify sram buffer as SPI Slave DMA buffer.

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/clock/rk3188-cru-common.h>
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    spi0: spi@ff110000 {
      compatible = "rockchip,spi-slave";
      reg = <0xff110000 0x1000>;
      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
      clocks = <&cru CLK_SPI0>, <&cru PCLK_SPI0>, <&cru SCLK_IN_SPI0>;
      clock-names = "spiclk", "apb_pclk", "sclk_in";
      dmas = <&pdma1 11>, <&pdma1 12>;
      dma-names = "tx", "rx";
      #address-cells = <1>;
      #size-cells = <0>;
      ready-gpios = <&gpio1 RK_PD3 GPIO_ACTIVE_LOW>;
    };
