1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/net/nfc/st,st-nci.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: STMicroelectronics ST NCI NFC controller
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 properties:
13 compatible:
14 enum:
15 - st,st21nfcb-i2c
16 - st,st21nfcb-spi
17 - st,st21nfcc-i2c
18
19 reset-gpios:
20 description: Output GPIO pin used for resetting the controller
21
22 ese-present:
23 type: boolean
24 description: |
25 Specifies that an ese is physically connected to the controller
26
27 interrupts:
28 maxItems: 1
29
30 reg:
31 maxItems: 1
32
33 uicc-present:
34 type: boolean
35 description: |
36 Specifies that the uicc swp signal can be physically connected to the
37 controller
38
39 required:
40 - compatible
41 - interrupts
42 - reg
43 - reset-gpios
44
45 if:
46 properties:
47 compatible:
48 contains:
49 enum:
50 - st,st21nfcb-i2c
51 - st,st21nfcc-i2c
52 then:
53 properties:
54 spi-max-frequency: false
55 else:
56 $ref: /schemas/spi/spi-peripheral-props.yaml#
57 required:
58 - spi-max-frequency
59
60 unevaluatedProperties: false
61
62 examples:
63 - |
64 #include <dt-bindings/gpio/gpio.h>
65 #include <dt-bindings/interrupt-controller/irq.h>
66
67 i2c {
68 #address-cells = <1>;
69 #size-cells = <0>;
70
71 nfc@8 {
72 compatible = "st,st21nfcb-i2c";
73 reg = <0x08>;
74
75 interrupt-parent = <&gpio5>;
76 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
77 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
78
79 ese-present;
80 uicc-present;
81 };
82 };
83
84 - |
85 #include <dt-bindings/gpio/gpio.h>
86 #include <dt-bindings/interrupt-controller/irq.h>
87
88 spi {
89 #address-cells = <1>;
90 #size-cells = <0>;
91
92 nfc@0 {
93 compatible = "st,st21nfcb-spi";
94 reg = <0>;
95
96 spi-max-frequency = <4000000>;
97
98 interrupt-parent = <&gpio5>;
99 interrupts = <2 IRQ_TYPE_EDGE_RISING>;
100 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
101
102 ese-present;
103 uicc-present;
104 };
105 };
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