[PATCH v6 09/10] arm64: dts: cix: add initial CIX P1(SKY1) dts support

[Kajetan Puchalski]

On Tue, Apr 15, 2025 at 03:27:23PM +0800, Peter Chen wrote:
> CIX SKY1 SoC is high performance Armv9 SoC designed by Cixtech,
> and Orion O6 is the motherboard launched by Radxa. See below for
> detail:
> https://docs.radxa.com/en/orion/o6/getting-started/introduction
> In this commit, it adds sky1 base, mailbox, clock (scmi firmware baseed)
> and uart, and the kernel could boot up to console.

The commit message style is supposed to be in imperative tone, i.e. "Add sky1 base".

> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
> Acked-by: Fugang Duan <fugang.duan at cixtech.com>
> Signed-off-by: Guomin Chen <Guomin.Chen at cixtech.com>
> Signed-off-by: Gary Yang <gary.yang at cixtech.com>
> Signed-off-by: Peter Chen <peter.chen at cixtech.com>
> ---

I've tested this on my own Orion O6 with 6.15-rc2, the UART does work and the kernel
does boot up to the expected point. Feel free to add the tag if you'd like.

Tested-by: Kajetan Puchalski <kajetan.puchalski at arm.com>

> +++ b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
> @@ -0,0 +1,39 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright 2025 Cix Technology Group Co., Ltd.
> + *
> + */
> +
> +/dts-v1/;
> +
> +#include "sky1.dtsi"
> +/ {
> +	model = "Radxa Orion O6";
> +	compatible = "radxa,orion-o6", "cix,sky1";
> +
> +	aliases {
> +		serial2 = &uart2;
> +	};
> +
> +	chosen {
> +		stdout-path = &uart2;
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		linux,cma {
> +			compatible = "shared-dma-pool";
> +			reusable;
> +			size = <0x0 0x28000000>;
> +			linux,cma-default;
> +		};
> +	};
> +
> +};
> +
> +&uart2 {
> +	status = "okay";
> +};