tjh.dev
Linux kernel mirror (for testing)
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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 - const: rockchip,rk3066-spi
37
38 reg:
39 maxItems: 1
40
41 interrupts:
42 maxItems: 1
43
44 clocks:
45 items:
46 - description: transfer-clock
47 - description: peripheral clock
48
49 clock-names:
50 items:
51 - const: spiclk
52 - const: apb_pclk
53
54 dmas:
55 items:
56 - description: TX DMA Channel
57 - description: RX DMA Channel
58
59 dma-names:
60 items:
61 - const: tx
62 - const: rx
63
64 rx-sample-delay-ns:
65 default: 0
66 description:
67 Nano seconds to delay after the SCLK edge before sampling Rx data
68 (may need to be fine tuned for high capacitance lines).
69 If not specified 0 will be used.
70
71 pinctrl-names:
72 minItems: 1
73 items:
74 - const: default
75 - const: sleep
76 description:
77 Names for the pin configuration(s); may be "default" or "sleep",
78 where the "sleep" configuration may describe the state
79 the pins should be in during system suspend.
80
81required:
82 - compatible
83 - reg
84 - interrupts
85 - clocks
86 - clock-names
87
88unevaluatedProperties: false
89
90examples:
91 - |
92 #include <dt-bindings/clock/rk3188-cru-common.h>
93 #include <dt-bindings/interrupt-controller/arm-gic.h>
94 #include <dt-bindings/interrupt-controller/irq.h>
95 spi0: spi@ff110000 {
96 compatible = "rockchip,rk3066-spi";
97 reg = <0xff110000 0x1000>;
98 interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
99 clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>;
100 clock-names = "spiclk", "apb_pclk";
101 dmas = <&pdma1 11>, <&pdma1 12>;
102 dma-names = "tx", "rx";
103 pinctrl-0 = <&spi1_pins>;
104 pinctrl-1 = <&spi1_sleep>;
105 pinctrl-names = "default", "sleep";
106 rx-sample-delay-ns = <10>;
107 #address-cells = <1>;
108 #size-cells = <0>;
109 };