xref: /linux/Documentation/devicetree/bindings/spi/spi-rockchip.yaml (revision 4da4e4bde1c453ac5cc2dce5def81d504ae257ee) 
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    };
121