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dt-bindings: nfc: nxp,nci: convert to dtschema

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Convert the NXP NCI NFC controller to DT schema format.

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/20211011073934.34340-2-krzysztof.kozlowski@canonical.com
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2021-10-11 09:39:27 +02:00 committed by Rob Herring
parent af5e7abe10
commit 6d362ea625
3 changed files with 58 additions and 33 deletions
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57
Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml Normal file
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@ -0,0 +1,57 @@
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/nfc/nxp,nci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP Semiconductors NCI NFC controller
maintainers:
- Charles Gorand <charles.gorand@effinnov.com>
- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
properties:
compatible:
const: nxp,nxp-nci-i2c
enable-gpios:
description: Output GPIO pin used for enabling/disabling the controller
firmware-gpios:
description: Output GPIO pin used to enter firmware download mode
interrupts:
maxItems: 1
reg:
maxItems: 1
required:
- compatible
- enable-gpios
- interrupts
- reg
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
nfc@29 {
compatible = "nxp,nxp-nci-i2c";
reg = <0x29>;
interrupt-parent = <&gpio1>;
interrupts = <29 IRQ_TYPE_LEVEL_HIGH>;
enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
firmware-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
};
};

33
Documentation/devicetree/bindings/net/nfc/nxp-nci.txt
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@ -1,33 +0,0 @@
* NXP Semiconductors NXP NCI NFC Controllers
Required properties:
- compatible: Should be "nxp,nxp-nci-i2c".
- clock-frequency: I²C work frequency.
- reg: address on the bus
- interrupts: GPIO interrupt to which the chip is connected
- enable-gpios: Output GPIO pin used for enabling/disabling the chip
Optional SoC Specific Properties:
- pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller.
- firmware-gpios: Output GPIO pin used to enter firmware download mode
Example (for ARM-based BeagleBone with NPC100 NFC controller on I2C2):
&i2c2 {
npc100: npc100@29 {
compatible = "nxp,nxp-nci-i2c";
reg = <0x29>;
clock-frequency = <100000>;
interrupt-parent = <&gpio1>;
interrupts = <29 IRQ_TYPE_LEVEL_HIGH>;
enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
firmware-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
};
};

1
MAINTAINERS
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@ -13521,6 +13521,7 @@ NXP-NCI NFC DRIVER
R: Charles Gorand <charles.gorand@effinnov.com>
L: linux-nfc@lists.01.org (subscribers-only)
S: Supported
F: Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
F: drivers/nfc/nxp-nci
NXP i.MX 8QXP/8QM JPEG V4L2 DRIVER