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 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/bluetooth/nxp,88w8987-bt.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: NXP Bluetooth chips
8
9description:
10 This binding describes UART-attached NXP bluetooth chips. These chips
11 are dual-radio chips supporting WiFi and Bluetooth. The bluetooth
12 works on standard H4 protocol over 4-wire UART. The RTS and CTS lines
13 are used during FW download. To enable power save mode, the host
14 asserts break signal over UART-TX line to put the chip into power save
15 state. De-asserting break wakes up the BT chip.
16
17maintainers:
18 - Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
19
20allOf:
21 - $ref: bluetooth-controller.yaml#
22
23properties:
24 compatible:
25 enum:
26 - nxp,88w8987-bt
27 - nxp,88w8997-bt
28
29 fw-init-baudrate:
30 $ref: /schemas/types.yaml#/definitions/uint32
31 default: 115200
32 description:
33 Chip baudrate after FW is downloaded and initialized.
34 This property depends on the module vendor's
35 configuration.
36
37 firmware-name:
38 maxItems: 1
39
40 device-wakeup-gpios:
41 maxItems: 1
42 description:
43 Host-To-Chip power save mechanism is driven by this GPIO
44 connected to BT_WAKE_IN pin of the NXP chipset.
45
46 nxp,wakein-pin:
47 $ref: /schemas/types.yaml#/definitions/uint8
48 description:
49 The GPIO number of the NXP chipset used for BT_WAKE_IN.
50
51 nxp,wakeout-pin:
52 $ref: /schemas/types.yaml#/definitions/uint8
53 description:
54 The GPIO number of the NXP chipset used for BT_WAKE_OUT.
55
56required:
57 - compatible
58
59unevaluatedProperties: false
60
61examples:
62 - |
63 #include <dt-bindings/gpio/gpio.h>
64 serial {
65 bluetooth {
66 compatible = "nxp,88w8987-bt";
67 fw-init-baudrate = <3000000>;
68 firmware-name = "uartuart8987_bt_v0.bin";
69 device-wakeup-gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
70 nxp,wakein-pin = /bits/ 8 <18>;
71 nxp,wakeout-pin = /bits/ 8 <19>;
72 local-bd-address = [66 55 44 33 22 11];
73 };
74 };