linux-kernel - [PATCH 01/15] arm64: dts: imx8mm-phycore-som: Keep LDO3 on in suspend

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Message-Id: <20241125081814.397352-2-andrej.picej@norik.com>
Date: Mon, 25 Nov 2024 09:18:00 +0100
From: Andrej Picej <andrej.picej@...ik.com>
To: shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org
Cc: imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	upstream@...ts.phytec.de
Subject: [PATCH 01/15] arm64: dts: imx8mm-phycore-som: Keep LDO3 on in suspend

From: Teresa Remmet <t.remmet@...tec.de>

LDO3 is also used as switch for enabling VDD_3V3_S and need to
be kept on during suspend. Disabling this can lead to an unwanted
reset during resume.

Set LDO3 to 2,5V as the voltage should be fix.

Signed-off-by: Teresa Remmet <t.remmet@...tec.de>
Signed-off-by: Andrej Picej <andrej.picej@...ik.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi
index 6069678244f3..7761acc5c510 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-phycore-som.dtsi
@@ -161,11 +161,13 @@ reg_vcc_enet: ldo3 {
 				regulator-always-on;
 				regulator-boot-on;
 				regulator-max-microvolt = <2500000>;
-				regulator-min-microvolt = <1500000>;
+				regulator-min-microvolt = <2500000>;
 				regulator-name = "VCC_ENET_2V5 (LDO3)";
 
 				regulator-state-mem {
-					regulator-off-in-suspend;
+					regulator-on-in-suspend;
+					regulator-suspend-max-microvolt = <2500000>;
+					regulator-suspend-min-microvolt = <2500000>;
 				};
 			};
 
-- 
2.34.1