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From: Chukun Pan <amadeus@jmu.edu.cn>
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Subject: Re: [PATCH v2 4/4] riscv: dts: spacemit: k1-bananapi-f3: Add vin-supply for PCIe 3.3V regulator
Date: Wed, 13 May 2026 18:50:30 +0800
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Hi,

> @@ -39,6 +39,7 @@ pcie_vcc_3v3: regulator-pcie-vcc3v3 {
>  		regulator-min-microvolt = <3300000>;
>  		regulator-max-microvolt = <3300000>;
>  		regulator-always-on;
> +		vin-supply = <&reg_vcc5v0_sys>;
>  	};

> Plese check power tree page 4
>
> USBVBUS->SY8386J UXXX -> PCIE_VCC3V3 for pcie vin source
>
> USBVBUS is power source from the typec port.

So this isn't from VCC5V0_SYS. USBVBUS and DC_IN can be
considered as the same power source.