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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/broadcom-bluetooth.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom Bluetooth Chips
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description:
This binding describes Broadcom UART-attached bluetooth chips.
properties:
compatible:
enum:
- brcm,bcm20702a1
- brcm,bcm4329-bt
- brcm,bcm4330-bt
- brcm,bcm4334-bt
- brcm,bcm43438-bt
- brcm,bcm4345c5
- brcm,bcm43540-bt
- brcm,bcm4335a0
- brcm,bcm4349-bt
- infineon,cyw55572-bt
shutdown-gpios:
maxItems: 1
description: GPIO specifier for the line BT_REG_ON used to
power on the BT module
reset-gpios:
maxItems: 1
description: GPIO specifier for the line BT_RST_N used to
reset the BT module. This should be marked as
GPIO_ACTIVE_LOW.
device-wakeup-gpios:
maxItems: 1
description: GPIO specifier for the line BT_WAKE used to
wakeup the controller. This is using the BT_GPIO_0
pin on the chip when in use.
host-wakeup-gpios:
maxItems: 1
deprecated: true
description: GPIO specifier for the line HOST_WAKE used
to wakeup the host processor. This is using he BT_GPIO_1
pin on the chip when in use. This is deprecated and replaced
by interrupts and "host-wakeup" interrupt-names
clocks:
minItems: 1
maxItems: 2
description: 1 or 2 clocks as defined in clock-names below,
in that order
clock-names:
description: Names of the 1 to 2 supplied clocks
oneOf:
- const: extclk
deprecated: true
description: Deprecated in favor of txco
- const: txco
description: >
external reference clock (not a standalone crystal)
- const: lpo
description: >
external low power 32.768 kHz clock
- items:
- const: txco
- const: lpo
vbat-supply:
description: phandle to regulator supply for VBAT
vddio-supply:
description: phandle to regulator supply for VDDIO
brcm,bt-pcm-int-params:
$ref: /schemas/types.yaml#/definitions/uint8-array
minItems: 5
maxItems: 5
description: |-
configure PCM parameters via a 5-byte array:
sco-routing: 0 = PCM, 1 = Transport, 2 = Codec, 3 = I2S
pcm-interface-rate: 128KBps, 256KBps, 512KBps, 1024KBps, 2048KBps
pcm-frame-type: short, long
pcm-sync-mode: slave, master
pcm-clock-mode: slave, master
brcm,requires-autobaud-mode:
type: boolean
description:
Set this property if autobaud mode is required. Autobaud mode is required
if the device's initial baud rate in normal mode is not supported by the
host or if the device requires autobaud mode startup before loading FW.
interrupts:
items:
- description: Handle to the line HOST_WAKE used to wake
up the host processor. This uses the BT_GPIO_1 pin on
the chip when in use.
interrupt-names:
items:
- const: host-wakeup
max-speed: true
current-speed: true
required:
- compatible
dependencies:
brcm,requires-autobaud-mode: [ 'shutdown-gpios' ]
if:
not:
properties:
compatible:
contains:
enum:
- brcm,bcm20702a1
- brcm,bcm4329-bt
- brcm,bcm4330-bt
then:
properties:
reset-gpios: false
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
uart {
uart-has-rtscts;
bluetooth {
compatible = "brcm,bcm4330-bt";
max-speed = <921600>;
brcm,bt-pcm-int-params = [01 02 00 01 01];
shutdown-gpios = <&gpio 30 GPIO_ACTIVE_HIGH>;
device-wakeup-gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio 9 GPIO_ACTIVE_LOW>;
interrupt-parent = <&gpio>;
interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
};
};
|
