Bindings/net/broadcom-bluetooth.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/net/broadcom-bluetooth.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Broadcom Bluetooth Chips
   8
   9 maintainers:
  10   - Linus Walleij <linus.walleij@linaro.org>
  11
  12 description:
  13   This binding describes Broadcom UART-attached bluetooth chips.
  14
  15 properties:
  16   compatible:
  17     enum:
  18       - brcm,bcm20702a1
  19       - brcm,bcm4329-bt
  20       - brcm,bcm4330-bt
  21       - brcm,bcm4334-bt
  22       - brcm,bcm43430a0-bt
  23       - brcm,bcm43430a1-bt
  24       - brcm,bcm43438-bt
  25       - brcm,bcm4345c5
  26       - brcm,bcm43540-bt
  27       - brcm,bcm4335a0
  28       - brcm,bcm4349-bt
  29       - cypress,cyw4373a0-bt
  30       - infineon,cyw55572-bt
  31
  32   shutdown-gpios:
  33     maxItems: 1
  34     description: GPIO specifier for the line BT_REG_ON used to
  35       power on the BT module
  36
  37   reset-gpios:
  38     maxItems: 1
  39     description: GPIO specifier for the line BT_RST_N used to
  40       reset the BT module. This should be marked as
  41       GPIO_ACTIVE_LOW.
  42
  43   device-wakeup-gpios:
  44     maxItems: 1
  45     description: GPIO specifier for the line BT_WAKE used to
  46       wakeup the controller. This is using the BT_GPIO_0
  47       pin on the chip when in use.
  48
  49   host-wakeup-gpios:
  50     maxItems: 1
  51     deprecated: true
  52     description: GPIO specifier for the line HOST_WAKE used
  53       to wakeup the host processor. This is using he BT_GPIO_1
  54       pin on the chip when in use. This is deprecated and replaced
  55       by interrupts and "host-wakeup" interrupt-names
  56
  57   clocks:
  58     minItems: 1
  59     maxItems: 2
  60     description: 1 or 2 clocks as defined in clock-names below,
  61       in that order
  62
  63   clock-names:
  64     description: Names of the 1 to 2 supplied clocks
  65     oneOf:
  66       - const: extclk
  67         deprecated: true
  68         description: Deprecated in favor of txco
  69
  70       - const: txco
  71         description: >
  72           external reference clock (not a standalone crystal)
  73
  74       - const: lpo
  75         description: >
  76           external low power 32.768 kHz clock
  77
  78       - items:
  79           - const: txco
  80           - const: lpo
  81
  82   vbat-supply:
  83     description: phandle to regulator supply for VBAT
  84
  85   vddio-supply:
  86     description: phandle to regulator supply for VDDIO
  87
  88   brcm,bt-pcm-int-params:
  89     $ref: /schemas/types.yaml#/definitions/uint8-array
  90     minItems: 5
  91     maxItems: 5
  92     description: |-
  93       configure PCM parameters via a 5-byte array:
  94        sco-routing: 0 = PCM, 1 = Transport, 2 = Codec, 3 = I2S
  95        pcm-interface-rate: 128KBps, 256KBps, 512KBps, 1024KBps, 2048KBps
  96        pcm-frame-type: short, long
  97        pcm-sync-mode: slave, master
  98        pcm-clock-mode: slave, master
  99
 100   brcm,requires-autobaud-mode:
 101     type: boolean
 102     description:
 103       Set this property if autobaud mode is required. Autobaud mode is required
 104       if the device's initial baud rate in normal mode is not supported by the
 105       host or if the device requires autobaud mode startup before loading FW.
 106
 107   interrupts:
 108     items:
 109       - description: Handle to the line HOST_WAKE used to wake
 110           up the host processor. This uses the BT_GPIO_1 pin on
 111           the chip when in use.
 112
 113   interrupt-names:
 114     items:
 115       - const: host-wakeup
 116
 117   max-speed: true
 118   current-speed: true
 119
 120 required:
 121   - compatible
 122
 123 dependencies:
 124   brcm,requires-autobaud-mode: [ shutdown-gpios ]
 125
 126 if:
 127   not:
 128     properties:
 129       compatible:
 130         contains:
 131           enum:
 132             - brcm,bcm20702a1
 133             - brcm,bcm4329-bt
 134             - brcm,bcm4330-bt
 135 then:
 136   properties:
 137     reset-gpios: false
 138
 139 additionalProperties: false
 140
 141 examples:
 142   - |
 143     #include <dt-bindings/gpio/gpio.h>
 144     #include <dt-bindings/interrupt-controller/irq.h>
 145
 146     uart {
 147         uart-has-rtscts;
 148
 149         bluetooth {
 150             compatible = "brcm,bcm4330-bt";
 151             max-speed = <921600>;
 152             brcm,bt-pcm-int-params = [01 02 00 01 01];
 153             shutdown-gpios = <&gpio 30 GPIO_ACTIVE_HIGH>;
 154             device-wakeup-gpios = <&gpio 7 GPIO_ACTIVE_HIGH>;
 155             reset-gpios = <&gpio 9 GPIO_ACTIVE_LOW>;
 156             interrupt-parent = <&gpio>;
 157             interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
 158         };
 159     };