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19951f4ced
Convert the ST NCI (ST21NFCB) NFC controller to DT schema format. Changes during bindings conversion: 1. Add a new required "reg" property for SPI binding, because SPI child devices use it as chip-select. 2. Drop the "clock-frequency" property during conversion because it is a property of I2C bus controller, not I2C slave device. It was also never used by the driver. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20211011073934.34340-7-krzysztof.kozlowski@canonical.com Signed-off-by: Rob Herring <robh@kernel.org>
107 lines
2.1 KiB
YAML
107 lines
2.1 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/net/nfc/st,st-nci.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: STMicroelectronics ST NCI NFC controller
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maintainers:
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- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
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properties:
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compatible:
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enum:
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- st,st21nfcb-i2c
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- st,st21nfcb-spi
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- st,st21nfcc-i2c
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reset-gpios:
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description: Output GPIO pin used for resetting the controller
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ese-present:
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type: boolean
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description: |
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Specifies that an ese is physically connected to the controller
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interrupts:
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maxItems: 1
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reg:
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maxItems: 1
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spi-max-frequency: true
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uicc-present:
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type: boolean
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description: |
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Specifies that the uicc swp signal can be physically connected to the
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controller
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required:
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- compatible
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- interrupts
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- reg
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- reset-gpios
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if:
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properties:
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compatible:
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contains:
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enum:
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- st,st21nfcb-i2c
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- st,st21nfcc-i2c
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then:
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properties:
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spi-max-frequency: false
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else:
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required:
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- spi-max-frequency
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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nfc@8 {
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compatible = "st,st21nfcb-i2c";
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reg = <0x08>;
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interrupt-parent = <&gpio5>;
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interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
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reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
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ese-present;
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uicc-present;
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};
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};
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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nfc@0 {
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compatible = "st,st21nfcb-spi";
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reg = <0>;
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spi-max-frequency = <4000000>;
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interrupt-parent = <&gpio5>;
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interrupts = <2 IRQ_TYPE_EDGE_RISING>;
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reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
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ese-present;
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uicc-present;
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};
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};
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