xref: /linux/Documentation/devicetree/bindings/spi/spi-rockchip.yaml (revision a4eb44a6435d6d8f9e642407a4a06f65eb90ca04) 
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,rv1126-spi
38          - const: rockchip,rk3066-spi
39
40  reg:
41    maxItems: 1
42
43  interrupts:
44    maxItems: 1
45
46  clocks:
47    items:
48      - description: transfer-clock
49      - description: peripheral clock
50
51  clock-names:
52    items:
53      - const: spiclk
54      - const: apb_pclk
55
56  dmas:
57    items:
58      - description: TX DMA Channel
59      - description: RX DMA Channel
60
61  dma-names:
62    items:
63      - const: tx
64      - const: rx
65
66  rx-sample-delay-ns:
67    default: 0
68    description:
69      Nano seconds to delay after the SCLK edge before sampling Rx data
70      (may need to be fine tuned for high capacitance lines).
71      If not specified 0 will be used.
72
73  pinctrl-names:
74    minItems: 1
75    items:
76      - const: default
77      - const: sleep
78    description:
79      Names for the pin configuration(s); may be "default" or "sleep",
80      where the "sleep" configuration may describe the state
81      the pins should be in during system suspend.
82
83required:
84  - compatible
85  - reg
86  - interrupts
87  - clocks
88  - clock-names
89
90unevaluatedProperties: false
91
92examples:
93  - |
94    #include <dt-bindings/clock/rk3188-cru-common.h>
95    #include <dt-bindings/interrupt-controller/arm-gic.h>
96    #include <dt-bindings/interrupt-controller/irq.h>
97    spi0: spi@ff110000 {
98      compatible = "rockchip,rk3066-spi";
99      reg = <0xff110000 0x1000>;
100      interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
101      clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
102      clock-names = "spiclk", "apb_pclk";
103      dmas = <&pdma1 11>, <&pdma1 12>;
104      dma-names = "tx", "rx";
105      pinctrl-0 = <&spi1_pins>;
106      pinctrl-1 = <&spi1_sleep>;
107      pinctrl-names = "default", "sleep";
108      rx-sample-delay-ns = <10>;
109      #address-cells = <1>;
110      #size-cells = <0>;
111    };
112