linux-kernel - [PATCH 1/3] arm64: dts: rockchip: adjust dcin regulator on ROCK 4D

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Message-Id: <20250630-rock4d-reg-usb-wifi-v1-1-1057f412d98c@collabora.com>
Date: Mon, 30 Jun 2025 17:36:33 +0200
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: kernel@...labora.com, devicetree@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, 
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: [PATCH 1/3] arm64: dts: rockchip: adjust dcin regulator on ROCK 4D

The ROCK 4D's actual DC input is 5V, and the schematic names it as being
5V as well.

Rename the regulator, and change the voltage it claims to be at.
Furthermore, fix vcc_1v1_nldo_s3's vin-supply as coming from
vcc_5v0_sys, and not the DCIN, as per the schematic. This makes no
functional change; both regulators are always on, and one feeds into the
other.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
index 6756403111e704cad42f6674d5ab55eb0306f1e3..352e3df165688219bfedc19734d9eb32c547ec44 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
@@ -57,13 +57,13 @@ user-led {
 		};
 	};
 
-	vcc_12v0_dcin: regulator-vcc-12v0-dcin {
+	vcc_5v0_dcin: regulator-vcc-5v0-dcin {
 		compatible = "regulator-fixed";
 		regulator-always-on;
 		regulator-boot-on;
-		regulator-min-microvolt = <12000000>;
-		regulator-max-microvolt = <12000000>;
-		regulator-name = "vcc_12v0_dcin";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-name = "vcc_5v0_dcin";
 	};
 
 	vcc_1v1_nldo_s3: regulator-vcc-1v1-nldo-s3 {
@@ -166,7 +166,7 @@ vcc_5v0_device: regulator-vcc-5v0-device {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 		regulator-name = "vcc_5v0_device";
-		vin-supply = <&vcc_12v0_dcin>;
+		vin-supply = <&vcc_5v0_sys>;
 	};
 
 	vcc_5v0_host: regulator-vcc-5v0-host {
@@ -190,7 +190,7 @@ vcc_5v0_sys: regulator-vcc-5v0-sys {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 		regulator-name = "vcc_5v0_sys";
-		vin-supply = <&vcc_12v0_dcin>;
+		vin-supply = <&vcc_5v0_dcin>;
 	};
 };
 

-- 
2.50.0