linux-kernel - [PATCH 2/2] arm64: dts: imx8mp-tqma8mpql: remove virtual 3.3V regulator

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Message-ID: <20250731091655.2453107-2-alexander.stein@ew.tq-group.com>
Date: Thu, 31 Jul 2025 11:16:53 +0200
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>,
	Alexander Stein <alexander.stein@...tq-group.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
Subject: [PATCH 2/2] arm64: dts: imx8mp-tqma8mpql: 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>
---
 .../boot/dts/freescale/imx8mp-tqma8mpql.dtsi      | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
index b48d5da147273..9716f24f7c6ed 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql.dtsi
@@ -16,15 +16,6 @@ memory@...00000 {
 		reg = <0x0 0x40000000 0 0x80000000>;
 	};
 
-	/* identical to buck4_reg, but should never change */
-	reg_vcc3v3: regulator-vcc3v3 {
-		compatible = "regulator-fixed";
-		regulator-name = "VCC3V3";
-		regulator-min-microvolt = <3300000>;
-		regulator-max-microvolt = <3300000>;
-		regulator-always-on;
-	};
-
 	reg_usdhc2_vqmmc: regulator-usdhc2-vqmmc {
 		compatible = "regulator-gpio";
 		pinctrl-names = "default";
@@ -187,14 +178,14 @@ at24c02: eeprom@53 {
 		read-only;
 		reg = <0x53>;
 		pagesize = <16>;
-		vcc-supply = <&reg_vcc3v3>;
+		vcc-supply = <&buck4_reg>;
 	};
 
 	m24c64: eeprom@57 {
 		compatible = "atmel,24c64";
 		reg = <0x57>;
 		pagesize = <32>;
-		vcc-supply = <&reg_vcc3v3>;
+		vcc-supply = <&buck4_reg>;
 	};
 };
 
@@ -211,7 +202,7 @@ &usdhc3 {
 	non-removable;
 	no-sd;
 	no-sdio;
-	vmmc-supply = <&reg_vcc3v3>;
+	vmmc-supply = <&buck4_reg>;
 	vqmmc-supply = <&buck5_reg>;
 	status = "okay";
 };
-- 
2.43.0