linux-kernel - [PATCH 2/2] riscv: dts: spacemit: add fixed regulators for OrangePi

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Message-Id: <20260116100001.208334-2-amadeus@jmu.edu.cn>
Date: Fri, 16 Jan 2026 18:00:01 +0800
From: Chukun Pan <amadeus@....edu.cn>
To: Yixun Lan <dlan@...too.org>
Cc: Rob Herring <robh@...nel.org>,
	Paul Walmsley <pjw@...nel.org>,
	Alexandre Ghiti <alex@...ti.fr>,
	Albert Ou <aou@...s.berkeley.edu>,
	Palmer Dabbelt <palmer@...belt.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	spacemit@...ts.linux.dev,
	Chukun Pan <amadeus@....edu.cn>
Subject: [PATCH 2/2] riscv: dts: spacemit: add fixed regulators for OrangePi

Define the power input and the 4V / 3.3V power as fixed regulator
supplies for the PMIC, PCIe and Wi-Fi.

Signed-off-by: Chukun Pan <amadeus@....edu.cn>
---
 arch/riscv/boot/dts/spacemit/k1-orangepi.dtsi | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi.dtsi b/arch/riscv/boot/dts/spacemit/k1-orangepi.dtsi
index b4808f258adf..c71c5bc1d341 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi.dtsi
@@ -17,6 +17,34 @@ aliases {
 	chosen {
 		stdout-path = "serial0";
 	};
+
+	pcie_vcc3v3: regulator-pcie-vcc3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie_vcc3v3";
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc_5v0>;
+	};
+
+	vcc_5v0: regulator-vcc-5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_5v0";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vcc4v0: regulator-vcc4v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc4v0";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <4000000>;
+		regulator-max-microvolt = <4000000>;
+		vin-supply = <&vcc_5v0>;
+	};
 };
 
 &eth0 {
-- 
2.25.1