linux-kernel - [PATCH 1/4] arm64: dts: imx8mm-tqma8mqml: remove virtual 3.3V regulator

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Message-ID: <20251216133110.905950-1-alexander.stein@ew.tq-group.com>
Date: Tue, 16 Dec 2025 14:31:04 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>
Cc: Markus Niebel <Markus.Niebel@...tq-group.com>,
	linux@...tq-group.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Alexander Stein <alexander.stein@...tq-group.com>
Subject: [PATCH 1/4] arm64: dts: imx8mm-tqma8mqml: remove virtual 3.3V regulator

From: Markus Niebel <Markus.Niebel@...tq-group.com>

BUCK4 rail supplies the 3.3V rail. Use the actual regulator
instead of a virtual fixed regulator.

Signed-off-by: Markus Niebel <Markus.Niebel@...tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 .../arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi | 14 +++-----------
 1 file changed, 3 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
index b82e9790ea205..16ed8ce5b5c49 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-tqma8mqml.dtsi
@@ -24,14 +24,6 @@ reg_vcc1v8: regulator-vcc1v8 {
 		regulator-max-microvolt = <1800000>;
 	};
 
-	/* identical to buck4_reg, but should never change */
-	reg_vcc3v3: regulator-vcc3v3 {
-		compatible = "regulator-fixed";
-		regulator-name = "TQMA8MXML_VCC3V3";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
-	};
-
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -223,14 +215,14 @@ eeprom1: eeprom@53 {
 		read-only;
 		reg = <0x53>;
 		pagesize = <16>;
-		vcc-supply = <&reg_vcc3v3>;
+		vcc-supply = <&buck4_reg>;
 	};
 
 	eeprom0: eeprom@57 {
 		compatible = "atmel,24c64";
 		reg = <0x57>;
 		pagesize = <32>;
-		vcc-supply = <&reg_vcc3v3>;
+		vcc-supply = <&buck4_reg>;
 	};
 };
 
@@ -253,7 +245,7 @@ &usdhc3 {
 	non-removable;
 	no-sd;
 	no-sdio;
-	vmmc-supply = <&reg_vcc3v3>;
+	vmmc-supply = <&buck4_reg>;
 	vqmmc-supply = <&reg_vcc1v8>;
 	status = "okay";
 };
-- 
2.43.0