spi-rockchip.yaml

  1# SPDX-License-Identifier: GPL-2.0
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/spi/spi-rockchip.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Rockchip SPI Controller
  8
  9description:
 10  The Rockchip SPI controller is used to interface with various devices such
 11  as flash and display controllers using the SPI communication interface.
 12
 13allOf:
 14  - $ref: spi-controller.yaml#
 15
 16maintainers:
 17  - Heiko Stuebner <heiko@sntech.de>
 18
 19# Everything else is described in the common file
 20properties:
 21  compatible:
 22    oneOf:
 23      - const: rockchip,rk3036-spi
 24      - const: rockchip,rk3066-spi
 25      - const: rockchip,rk3228-spi
 26      - const: rockchip,rv1108-spi
 27      - items:
 28          - enum:
 29              - rockchip,px30-spi
 30              - rockchip,rk3128-spi
 31              - rockchip,rk3188-spi
 32              - rockchip,rk3288-spi
 33              - rockchip,rk3308-spi
 34              - rockchip,rk3328-spi
 35              - rockchip,rk3368-spi
 36              - rockchip,rk3399-spi
 37              - rockchip,rk3506-spi
 38              - rockchip,rk3528-spi
 39              - rockchip,rk3562-spi
 40              - rockchip,rk3568-spi
 41              - rockchip,rk3576-spi
 42              - rockchip,rk3588-spi
 43              - rockchip,rv1126-spi
 44          - const: rockchip,rk3066-spi
 45
 46  reg:
 47    maxItems: 1
 48
 49  interrupts:
 50    maxItems: 1
 51
 52  clocks:
 53    items:
 54      - description: transfer-clock
 55      - description: peripheral clock
 56
 57  clock-names:
 58    items:
 59      - const: spiclk
 60      - const: apb_pclk
 61
 62  dmas:
 63    items:
 64      - description: TX DMA Channel
 65      - description: RX DMA Channel
 66
 67  dma-names:
 68    items:
 69      - const: tx
 70      - const: rx
 71
 72  rx-sample-delay-ns:
 73    default: 0
 74    description:
 75      Nano seconds to delay after the SCLK edge before sampling Rx data
 76      (may need to be fine tuned for high capacitance lines).
 77      If not specified 0 will be used.
 78
 79  pinctrl-names:
 80    minItems: 1
 81    items:
 82      - const: default
 83      - const: sleep
 84    description:
 85      Names for the pin configuration(s); may be "default" or "sleep",
 86      where the "sleep" configuration may describe the state
 87      the pins should be in during system suspend.
 88
 89  power-domains:
 90    maxItems: 1
 91
 92required:
 93  - compatible
 94  - reg
 95  - interrupts
 96  - clocks
 97  - clock-names
 98
 99unevaluatedProperties: false
100
101examples:
102  - |
103    #include <dt-bindings/clock/rk3188-cru-common.h>
104    #include <dt-bindings/interrupt-controller/arm-gic.h>
105    #include <dt-bindings/interrupt-controller/irq.h>
106    spi0: spi@ff110000 {
107      compatible = "rockchip,rk3066-spi";
108      reg = <0xff110000 0x1000>;
109      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
110      clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
111      clock-names = "spiclk", "apb_pclk";
112      dmas = <&pdma1 11>, <&pdma1 12>;
113      dma-names = "tx", "rx";
114      pinctrl-0 = <&spi1_pins>;
115      pinctrl-1 = <&spi1_sleep>;
116      pinctrl-names = "default", "sleep";
117      rx-sample-delay-ns = <10>;
118      #address-cells = <1>;
119      #size-cells = <0>;
120    };