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/samsung,s3fwrn5.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Samsung S3FWRN5 NCI NFC Controller
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 properties:
13 compatible:
14 enum:
15 - samsung,s3fwrn5-i2c
16 - samsung,s3fwrn82
17
18 en-gpios:
19 maxItems: 1
20 description:
21 Output GPIO pin used for enabling/disabling the chip
22
23 interrupts:
24 maxItems: 1
25
26 reg:
27 maxItems: 1
28
29 clocks:
30 maxItems: 1
31
32 wake-gpios:
33 maxItems: 1
34 description:
35 Output GPIO pin used to enter firmware mode and sleep/wakeup control
36
37 s3fwrn5,en-gpios:
38 maxItems: 1
39 deprecated: true
40 description:
41 Use en-gpios
42
43 s3fwrn5,fw-gpios:
44 maxItems: 1
45 deprecated: true
46 description:
47 Use wake-gpios
48
49 additionalProperties: false
50
51 required:
52 - compatible
53 - en-gpios
54 - wake-gpios
55
56 allOf:
57 - if:
58 properties:
59 compatible:
60 contains:
61 const: samsung,s3fwrn5-i2c
62 then:
63 required:
64 - interrupts
65 - reg
66
67 examples:
68 - |
69 #include <dt-bindings/gpio/gpio.h>
70 #include <dt-bindings/interrupt-controller/irq.h>
71
72 i2c {
73 #address-cells = <1>;
74 #size-cells = <0>;
75
76 s3fwrn5@27 {
77 compatible = "samsung,s3fwrn5-i2c";
78 reg = <0x27>;
79
80 interrupt-parent = <&gpa1>;
81 interrupts = <3 IRQ_TYPE_EDGE_RISING>;
82
83 en-gpios = <&gpf1 4 GPIO_ACTIVE_HIGH>;
84 wake-gpios = <&gpj0 2 GPIO_ACTIVE_HIGH>;
85
86 clocks = <&rpmcc 20>;
87 };
88 };
89 # UART example on Raspberry Pi
90 - |
91 uart0 {
92 nfc {
93 compatible = "samsung,s3fwrn82";
94
95 en-gpios = <&gpio 20 GPIO_ACTIVE_HIGH>;
96 wake-gpios = <&gpio 16 GPIO_ACTIVE_HIGH>;
97
98 };
99 };
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