[PATCH RFC 2/3] riscv: dts: sophgo: Add syscon node for cv18xx

[Alexander Sverdlin]

Thanks for the patch, Inochi!

On Wed, 2025-06-11 at 16:24 +0800, Inochi Amaoto wrote:
> Add top syscon node and all subdevice nodes for cv18xx series SoC.
> 
> Signed-off-by: Inochi Amaoto <inochiama at gmail.com>

Successfully tested in host mode on Milk-V Duo Module 01 EVB:

Tested-by: Alexander Sverdlin <alexander.sverdlin at gmail.com>

> ---
>  arch/riscv/boot/dts/sophgo/cv180x.dtsi | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> index 929864ba1b26..65eceaa5d2f8 100644
> --- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> @@ -25,6 +25,32 @@ soc {
>  		#size-cells = <1>;
>  		ranges;
>  
> +		syscon: syscon at 3000000 {
> +			compatible = "sophgo,cv1800b-top-syscon",
> +				     "syscon", "simple-mfd";
> +			reg = <0x03000000 0x1000>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			usbphy: phy at 48 {
> +				compatible = "sophgo,cv1800b-usb2-phy";
> +				reg = <0x48 0x4>;
> +				#phy-cells = <0>;
> +				clocks = <&clk CLK_USB_125M>,
> +					 <&clk CLK_USB_33K>,
> +					 <&clk CLK_USB_12M>;
> +				clock-names = "app", "stb", "lpm";
> +				resets = <&rst RST_COMBO_PHY0>;
> +			};
> +
> +			dmamux: dma-router at 154 {
> +				compatible = "sophgo,cv1800b-dmamux";
> +				reg = <0x154 0x8>, <0x298 0x4>;
> +				#dma-cells = <2>;
> +				dma-masters = <&dmac>;
> +			};
> +		};

-- 
Alexander Sverdlin.