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