On Sat, Dec 07, 2019 at 11:22:49AM -0800, Alistair Francis wrote: > The sopine board has an optional RTL8723BS WiFi + BT module that can be > connected to UART1. Add this to the device tree so that it will work for > users if connected. > > Signed-off-by: Alistair Francis <alistair@xxxxxxxxxxxxx> > --- > .../dts/allwinner/sun50i-a64-sopine-baseboard.dts | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) > > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts > index 920103ec0046..0a91f9d8ed47 100644 > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts > @@ -214,6 +214,20 @@ &uart0 { > status = "okay"; > }; > > +&uart1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>; > + status = "okay"; > + > + bluetooth { > + compatible = "realtek,rtl8723bs-bt"; > + reset-gpios = <&r_pio 0 4 GPIO_ACTIVE_LOW>; /* PL4 */ > + device-wake-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* PL5 */ > + host-wake-gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */ > + firmware-postfix = "pine64"; > + }; > +}; > + Output from checkpatch: total: 10 errors, 11 warnings, 0 checks, 20 lines checked More importantly, that binding isn't documented, and doesn't have a driver either. I guess you want to have a look at: https://www.spinics.net/lists/arm-kernel/msg771488.html Maxime