linux-kernel - [PATCH 1/2] arm64: dts: freescale: imx93-tqma9352: Limit BUCK2 to 600mV

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Message-ID: <20250514094130.621087-1-alexander.stein@ew.tq-group.com>
Date: Wed, 14 May 2025 11:41:27 +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>,
	Peng Fan <peng.fan@....com>
Cc: 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 1/2] arm64: dts: freescale: imx93-tqma9352: Limit BUCK2 to 600mV

TQMa9352 is only using LPDDR4X, so the BUCK2 regulator should be fixed
at 600MV.

Fixes: d2858e6bd36c ("arm64: dts: freescale: imx93-tqma9352: Add PMIC node")
Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
index 2cabdae242273..09385b058664c 100644
--- a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
 /*
- * Copyright (c) 2022 TQ-Systems GmbH <linux@...tq-group.com>,
+ * Copyright (c) 2022-2025 TQ-Systems GmbH <linux@...tq-group.com>,
  * D-82229 Seefeld, Germany.
  * Author: Markus Niebel
  */
@@ -110,11 +110,11 @@ buck1: BUCK1 {
 				regulator-ramp-delay = <3125>;
 			};
 
-			/* V_DDRQ - 1.1 LPDDR4 or 0.6 LPDDR4X */
+			/* V_DDRQ - 0.6 V for LPDDR4X */
 			buck2: BUCK2 {
 				regulator-name = "BUCK2";
 				regulator-min-microvolt = <600000>;
-				regulator-max-microvolt = <1100000>;
+				regulator-max-microvolt = <600000>;
 				regulator-boot-on;
 				regulator-always-on;
 				regulator-ramp-delay = <3125>;
-- 
2.43.0