[PATCH v4 4/4] arm64: dts: amlogic: t7: khadas-vim4: Enable Bluetooth

[Neil Armstrong]

On 4/20/26 15:54, Ronald Claveau wrote:
> Enable UART C on the Khadas VIM4 board and attach the BCM43438
>   compatible Bluetooth controller to it. The node configures the RTS/CTS
> hardware flow control, the associated pinmux, the power supplies (vddao_3v3
> and vddao_1v8), the 32 kHz LPO clock shared with the wifi32k fixed
> clock, and the GPIO lines used for host wakeup, device wakeup and
> shutdown.
> 
> Signed-off-by: Ronald Claveau <linux-kernel-dev at aliel.fr>
> ---
>   .../dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts     | 19 +++++++++++++++++++
>   1 file changed, 19 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
> index 3227ab27de107..8ea7ae609fbd5 100644
> --- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
> +++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
> @@ -251,3 +251,22 @@ &sd_emmc_c {
>   &uart_a {
>   	status = "okay";
>   };
> +
> +&uart_c {
> +	status = "okay";
> +	pinctrl-0 = <&uart_c_pins>;
> +	pinctrl-names = "default";
> +	uart-has-rtscts;
> +
> +	bluetooth {
> +		compatible = "brcm,bcm43438-bt";
> +		shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
> +		host-wakeup-gpios = <&gpio GPIOX_18 GPIO_ACTIVE_HIGH>;
> +		device-wakeup-gpios = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>;
> +		max-speed = <3000000>;
> +		clocks = <&wifi32k>;
> +		clock-names = "lpo";
> +		vbat-supply = <&vddao_3v3>;
> +		vddio-supply = <&vddao_1v8>;
> +	};
> +};
> 

Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>

Thanks,
Neil