linux-kernel - [PATCH 2/7] riscv: dts: spacemit: Define fixed regulators for OrangePi RV2

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Message-ID: <c5799da08242f8aa1a77f144ab0273d68af1841f.1769895215.git.gaohan@iscas.ac.cn>
Date: Sun,  1 Feb 2026 05:38:09 +0800
From: Han Gao <gaohan@...as.ac.cn>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Yixun Lan <dlan@...too.org>,
	Paul Walmsley <pjw@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>
Cc: devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Han Gao <rabenda.cn@...il.com>,
	Han Gao <gaohan@...as.ac.cn>
Subject: [PATCH 2/7] riscv: dts: spacemit: Define fixed regulators for OrangePi RV2

Define the DC power input and the 4v power as fixed regulator supplies.

Signed-off-by: Han Gao <gaohan@...as.ac.cn>
---
 .../boot/dts/spacemit/k1-orangepi-rv2.dts     | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 93880ba7bdfe..bd1e45e95e38 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -23,6 +23,25 @@ chosen {
 		stdout-path = "serial0";
 	};
 
+	reg_dc_in: dc-in-12v {
+		compatible = "regulator-fixed";
+		regulator-name = "dc_in_12v";
+		regulator-min-microvolt = <12000000>;
+		regulator-max-microvolt = <12000000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_vcc_4v: vcc-4v {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_4v";
+		regulator-min-microvolt = <4000000>;
+		regulator-max-microvolt = <4000000>;
+		regulator-boot-on;
+		regulator-always-on;
+		vin-supply = <&reg_dc_in>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
-- 
2.47.3