> From: Hector Martin <marcan@xxxxxxxxx>
> Date: Wed, 6 Oct 2021 00:59:23 +0900
>
> This UART is connected to the debug port of the WLAN module. It is
> mostly useless, but makes for a good test case for runtime-pm without
> having to unbind the console from the main system UART.
>
> Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
> ---
> arch/arm64/boot/dts/apple/t8103-j274.dts | 5 +++++
> arch/arm64/boot/dts/apple/t8103.dtsi | 12 ++++++++++++
> 2 files changed, 17 insertions(+)
Doesn't break U-Boot or OpenBSD.
Reviewed-by: Mark Kettenis <kettenis@xxxxxxxxxxx>
> diff --git a/arch/arm64/boot/dts/apple/t8103-j274.dts b/arch/arm64/boot/dts/apple/t8103-j274.dts
> index e0f6775b9878..16c5eb7f53b1 100644
> --- a/arch/arm64/boot/dts/apple/t8103-j274.dts
> +++ b/arch/arm64/boot/dts/apple/t8103-j274.dts
> @@ -17,6 +17,7 @@ / {
>
> aliases {
> serial0 = &serial0;
> + serial2 = &serial2;
> };
>
> chosen {
> @@ -43,3 +44,7 @@ memory@800000000 {
> &serial0 {
> status = "okay";
> };
> +
> +&serial2 {
> + status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
> index 63056ddc7ef7..844ed7bd0451 100644
> --- a/arch/arm64/boot/dts/apple/t8103.dtsi
> +++ b/arch/arm64/boot/dts/apple/t8103.dtsi
> @@ -126,6 +126,18 @@ serial0: serial@235200000 {
> status = "disabled";
> };
>
> + serial2: serial@235208000 {
> + compatible = "apple,s5l-uart";
> + reg = <0x2 0x35208000 0x0 0x1000>;
> + reg-io-width = <4>;
> + interrupt-parent = <&aic>;
> + interrupts = <AIC_IRQ 607 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&clkref>, <&clkref>;
> + clock-names = "uart", "clk_uart_baud0";
> + power-domains = <&ps_uart2>;
> + status = "disabled";
> + };
> +
> aic: interrupt-controller@23b100000 {
> compatible = "apple,t8103-aic", "apple,aic";
> #interrupt-cells = <3>;
> --
> 2.33.0
>
>
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