linux-kernel - [PATCH 2/3] riscv: dts: spacemit: Define fixed regulators for Milk-V Jupiter

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Message-ID: <20251206134532.1741648-3-javierm@redhat.com>
Date: Sat,  6 Dec 2025 14:44:54 +0100
From: Javier Martinez Canillas <javierm@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Alex Elder <elder@...cstar.com>,
	Javier Martinez Canillas <javierm@...hat.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <pjw@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Yixun Lan <dlan@...too.org>,
	devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev
Subject: [PATCH 2/3] riscv: dts: spacemit: Define fixed regulators for Milk-V Jupiter

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

Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
---

 .../boot/dts/spacemit/k1-milkv-jupiter.dts    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
index aa425f02c1f4..5babed4d7094 100644
--- a/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-milkv-jupiter.dts
@@ -20,6 +20,25 @@ aliases {
 	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>;
+	};
 };
 
 &eth0 {
-- 
2.52.0