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
7 title: Rockchip SPI Controller
8
9 description:
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
13 allOf:
14 - $ref: spi-controller.yaml#
15
16 maintainers:
17 - Heiko Stuebner <heiko@sntech.de>
18
19 # Everything else is described in the common file
20 properties:
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,rk3568-spi
38 - rockchip,rk3576-spi
39 - rockchip,rk3588-spi
40 - rockchip,rv1126-spi
41 - const: rockchip,rk3066-spi
42
43 reg:
44 maxItems: 1
45
46 interrupts:
47 maxItems: 1
48
49 clocks:
50 items:
51 - description: transfer-clock
52 - description: peripheral clock
53
54 clock-names:
55 items:
56 - const: spiclk
57 - const: apb_pclk
58
59 dmas:
60 items:
61 - description: TX DMA Channel
62 - description: RX DMA Channel
63
64 dma-names:
65 items:
66 - const: tx
67 - const: rx
68
69 rx-sample-delay-ns:
70 default: 0
71 description:
72 Nano seconds to delay after the SCLK edge before sampling Rx data
73 (may need to be fine tuned for high capacitance lines).
74 If not specified 0 will be used.
75
76 pinctrl-names:
77 minItems: 1
78 items:
79 - const: default
80 - const: sleep
81 description:
82 Names for the pin configuration(s); may be "default" or "sleep",
83 where the "sleep" configuration may describe the state
84 the pins should be in during system suspend.
85
86 power-domains:
87 maxItems: 1
88
89 required:
90 - compatible
91 - reg
92 - interrupts
93 - clocks
94 - clock-names
95
96 unevaluatedProperties: false
97
98 examples:
99 - |
100 #include <dt-bindings/clock/rk3188-cru-common.h>
101 #include <dt-bindings/interrupt-controller/arm-gic.h>
102 #include <dt-bindings/interrupt-controller/irq.h>
103 spi0: spi@ff110000 {
104 compatible = "rockchip,rk3066-spi";
105 reg = <0xff110000 0x1000>;
106 interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
107 clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
108 clock-names = "spiclk", "apb_pclk";
109 dmas = <&pdma1 11>, <&pdma1 12>;
110 dma-names = "tx", "rx";
111 pinctrl-0 = <&spi1_pins>;
112 pinctrl-1 = <&spi1_sleep>;
113 pinctrl-names = "default", "sleep";
114 rx-sample-delay-ns = <10>;
115 #address-cells = <1>;
116 #size-cells = <0>;
117 };
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