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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/bluetooth/nxp,88w8987-bt.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP Bluetooth chips
description:
This binding describes UART-attached NXP bluetooth chips. These chips
are dual-radio chips supporting WiFi and Bluetooth. The bluetooth
works on standard H4 protocol over 4-wire UART. The RTS and CTS lines
are used during FW download. To enable power save mode, the host
asserts break signal over UART-TX line to put the chip into power save
state. De-asserting break wakes up the BT chip.
maintainers:
- Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
allOf:
- $ref: bluetooth-controller.yaml#
properties:
compatible:
enum:
- nxp,88w8987-bt
- nxp,88w8997-bt
fw-init-baudrate:
$ref: /schemas/types.yaml#/definitions/uint32
default: 115200
description:
Chip baudrate after FW is downloaded and initialized.
This property depends on the module vendor's
configuration.
firmware-name:
maxItems: 1
device-wakeup-gpios:
maxItems: 1
description:
Host-To-Chip power save mechanism is driven by this GPIO
connected to BT_WAKE_IN pin of the NXP chipset.
nxp,wakein-pin:
$ref: /schemas/types.yaml#/definitions/uint8
description:
The GPIO number of the NXP chipset used for BT_WAKE_IN.
nxp,wakeout-pin:
$ref: /schemas/types.yaml#/definitions/uint8
description:
The GPIO number of the NXP chipset used for BT_WAKE_OUT.
required:
- compatible
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
serial {
bluetooth {
compatible = "nxp,88w8987-bt";
fw-init-baudrate = <3000000>;
firmware-name = "uartuart8987_bt_v0.bin";
device-wakeup-gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
nxp,wakein-pin = /bits/ 8 <18>;
nxp,wakeout-pin = /bits/ 8 <19>;
local-bd-address = [66 55 44 33 22 11];
};
};
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