forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
116 lines
3.6 KiB
116 lines
3.6 KiB
MediaTek SoC built-in Bluetooth Devices |
|
================================== |
|
|
|
This device is a serial attached device to BTIF device and thus it must be a |
|
child node of the serial node with BTIF. The dt-bindings details for BTIF |
|
device can be known via Documentation/devicetree/bindings/serial/8250.yaml. |
|
|
|
Required properties: |
|
|
|
- compatible: Must be |
|
"mediatek,mt7622-bluetooth": for MT7622 SoC |
|
- clocks: Should be the clock specifiers corresponding to the entry in |
|
clock-names property. |
|
- clock-names: Should contain "ref" entries. |
|
- power-domains: Phandle to the power domain that the device is part of |
|
|
|
Example: |
|
|
|
btif: serial@1100c000 { |
|
compatible = "mediatek,mt7622-btif", |
|
"mediatek,mtk-btif"; |
|
reg = <0 0x1100c000 0 0x1000>; |
|
interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_LOW>; |
|
clocks = <&pericfg CLK_PERI_BTIF_PD>; |
|
clock-names = "main"; |
|
reg-shift = <2>; |
|
reg-io-width = <4>; |
|
|
|
bluetooth { |
|
compatible = "mediatek,mt7622-bluetooth"; |
|
power-domains = <&scpsys MT7622_POWER_DOMAIN_WB>; |
|
clocks = <&clk25m>; |
|
clock-names = "ref"; |
|
}; |
|
}; |
|
|
|
MediaTek UART based Bluetooth Devices |
|
================================== |
|
|
|
This device is a serial attached device to UART device and thus it must be a |
|
child node of the serial node with UART. |
|
|
|
Please refer to the following documents for generic properties: |
|
|
|
Documentation/devicetree/bindings/serial/serial.yaml |
|
|
|
Required properties: |
|
|
|
- compatible: Must be |
|
"mediatek,mt7663u-bluetooth": for MT7663U device |
|
"mediatek,mt7668u-bluetooth": for MT7668U device |
|
- vcc-supply: Main voltage regulator |
|
|
|
If the pin controller on the platform can support both pinmux and GPIO |
|
control such as the most of MediaTek platform. Please use below properties. |
|
|
|
- pinctrl-names: Should be "default", "runtime" |
|
- pinctrl-0: Should contain UART RXD low when the device is powered up to |
|
enter proper bootstrap mode. |
|
- pinctrl-1: Should contain UART mode pin ctrl |
|
|
|
Else, the pin controller on the platform only can support pinmux control and |
|
the GPIO control still has to rely on the dedicated GPIO controller such as |
|
a legacy MediaTek SoC, MT7621. Please use the below properties. |
|
|
|
- boot-gpios: GPIO same to the pin as UART RXD and used to keep LOW when |
|
the device is powered up to enter proper bootstrap mode when |
|
- pinctrl-names: Should be "default" |
|
- pinctrl-0: Should contain UART mode pin ctrl |
|
|
|
Optional properties: |
|
|
|
- reset-gpios: GPIO used to reset the device whose initial state keeps low, |
|
if the GPIO is missing, then board-level design should be |
|
guaranteed. |
|
- clocks: Should be the clock specifiers corresponding to the entry in |
|
clock-names property. If the clock is missing, then board-level |
|
design should be guaranteed. |
|
- clock-names: Should contain "osc" entry for the external oscillator. |
|
- current-speed: Current baud rate of the device whose defaults to 921600 |
|
|
|
Example: |
|
|
|
uart1_pins_boot: uart1-default { |
|
pins-dat { |
|
pinmux = <MT7623_PIN_81_URXD1_FUNC_GPIO81>; |
|
output-low; |
|
}; |
|
}; |
|
|
|
uart1_pins_runtime: uart1-runtime { |
|
pins-dat { |
|
pinmux = <MT7623_PIN_81_URXD1_FUNC_URXD1>, |
|
<MT7623_PIN_82_UTXD1_FUNC_UTXD1>; |
|
}; |
|
}; |
|
|
|
uart1: serial@11003000 { |
|
compatible = "mediatek,mt7623-uart", |
|
"mediatek,mt6577-uart"; |
|
reg = <0 0x11003000 0 0x400>; |
|
interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>; |
|
clocks = <&pericfg CLK_PERI_UART1_SEL>, |
|
<&pericfg CLK_PERI_UART1>; |
|
clock-names = "baud", "bus"; |
|
|
|
bluetooth { |
|
compatible = "mediatek,mt7663u-bluetooth"; |
|
vcc-supply = <®_5v>; |
|
reset-gpios = <&pio 24 GPIO_ACTIVE_LOW>; |
|
pinctrl-names = "default", "runtime"; |
|
pinctrl-0 = <&uart1_pins_boot>; |
|
pinctrl-1 = <&uart1_pins_runtime>; |
|
current-speed = <921600>; |
|
}; |
|
};
|
|
|