| # 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>; |
| }; |
| }; |
