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