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