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,rk3188-spi
31              - rockchip,rk3288-spi
32              - rockchip,rk3308-spi
33              - rockchip,rk3328-spi
34              - rockchip,rk3368-spi
35              - rockchip,rk3399-spi
36              - rockchip,rk3568-spi
37              - rockchip,rk3588-spi
38              - rockchip,rv1126-spi
39          - const: rockchip,rk3066-spi
40
41  reg:
42    maxItems: 1
43
44  interrupts:
45    maxItems: 1
46
47  clocks:
48    items:
49      - description: transfer-clock
50      - description: peripheral clock
51
52  clock-names:
53    items:
54      - const: spiclk
55      - const: apb_pclk
56
57  dmas:
58    items:
59      - description: TX DMA Channel
60      - description: RX DMA Channel
61
62  dma-names:
63    items:
64      - const: tx
65      - const: rx
66
67  rx-sample-delay-ns:
68    default: 0
69    description:
70      Nano seconds to delay after the SCLK edge before sampling Rx data
71      (may need to be fine tuned for high capacitance lines).
72      If not specified 0 will be used.
73
74  pinctrl-names:
75    minItems: 1
76    items:
77      - const: default
78      - const: sleep
79    description:
80      Names for the pin configuration(s); may be "default" or "sleep",
81      where the "sleep" configuration may describe the state
82      the pins should be in during system suspend.
83
84required:
85  - compatible
86  - reg
87  - interrupts
88  - clocks
89  - clock-names
90
91unevaluatedProperties: false
92
93examples:
94  - |
95    #include <dt-bindings/clock/rk3188-cru-common.h>
96    #include <dt-bindings/interrupt-controller/arm-gic.h>
97    #include <dt-bindings/interrupt-controller/irq.h>
98    spi0: spi@ff110000 {
99      compatible = "rockchip,rk3066-spi";
100      reg = <0xff110000 0x1000>;
101      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
102      clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
103      clock-names = "spiclk", "apb_pclk";
104      dmas = <&pdma1 11>, <&pdma1 12>;
105      dma-names = "tx", "rx";
106      pinctrl-0 = <&spi1_pins>;
107      pinctrl-1 = <&spi1_sleep>;
108      pinctrl-names = "default", "sleep";
109      rx-sample-delay-ns = <10>;
110      #address-cells = <1>;
111      #size-cells = <0>;
112    };
113