st,st-nci.yaml

  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 <krzk@kernel.org>
 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  uicc-present:
 34    type: boolean
 35    description: |
 36      Specifies that the uicc swp signal can be physically connected to the
 37      controller
 38
 39required:
 40  - compatible
 41  - interrupts
 42  - reg
 43  - reset-gpios
 44
 45if:
 46  properties:
 47    compatible:
 48      contains:
 49        enum:
 50          - st,st21nfcb-i2c
 51          - st,st21nfcc-i2c
 52then:
 53  properties:
 54    spi-max-frequency: false
 55else:
 56  $ref: /schemas/spi/spi-peripheral-props.yaml#
 57  required:
 58    - spi-max-frequency
 59
 60unevaluatedProperties: false
 61
 62examples:
 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    };