tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
7title: STMicroelectronics ST NCI NFC controller
8
9maintainers:
10 - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
11
12properties:
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 spi-max-frequency: true
34
35 uicc-present:
36 type: boolean
37 description: |
38 Specifies that the uicc swp signal can be physically connected to the
39 controller
40
41required:
42 - compatible
43 - interrupts
44 - reg
45 - reset-gpios
46
47if:
48 properties:
49 compatible:
50 contains:
51 enum:
52 - st,st21nfcb-i2c
53 - st,st21nfcc-i2c
54then:
55 properties:
56 spi-max-frequency: false
57else:
58 required:
59 - spi-max-frequency
60
61additionalProperties: false
62
63examples:
64 - |
65 #include <dt-bindings/gpio/gpio.h>
66 #include <dt-bindings/interrupt-controller/irq.h>
67
68 i2c {
69 #address-cells = <1>;
70 #size-cells = <0>;
71
72 nfc@8 {
73 compatible = "st,st21nfcb-i2c";
74 reg = <0x08>;
75
76 interrupt-parent = <&gpio5>;
77 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
78 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
79
80 ese-present;
81 uicc-present;
82 };
83 };
84
85 - |
86 #include <dt-bindings/gpio/gpio.h>
87 #include <dt-bindings/interrupt-controller/irq.h>
88
89 spi {
90 #address-cells = <1>;
91 #size-cells = <0>;
92
93 nfc@0 {
94 compatible = "st,st21nfcb-spi";
95 reg = <0>;
96
97 spi-max-frequency = <4000000>;
98
99 interrupt-parent = <&gpio5>;
100 interrupts = <2 IRQ_TYPE_EDGE_RISING>;
101 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
102
103 ese-present;
104 uicc-present;
105 };
106 };