From: Alexander Stein <alexander.stein@ew.tq-group.com>
Date: Wed, 14 May 2025 09:41:27 +0000 (+0200)
Subject: arm64: dts: freescale: imx93-tqma9352: Limit BUCK2 to 600mV
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=696a4c325fad8af95da6a9d797766d1613831622;p=users%2Fwilly%2Flinux.git

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@ew.tq-group.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi b/arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
index 2cabdae24227..09385b058664 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@ew.tq-group.com>,
+ * Copyright (c) 2022-2025 TQ-Systems GmbH <linux@ew.tq-group.com>,
  * D-82229 Seefeld, Germany.
  * Author: Markus Niebel
  */
@@ -110,11 +110,11 @@
 				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>;