linux-kernel - [PATCH 1/9] arm64: dts: imx8mn-bsh-smm-s2-common: Define suspend voltage threshold

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Message-ID: <20250514082507.1983849-2-dario.binacchi@amarulasolutions.com>
Date: Wed, 14 May 2025 10:24:55 +0200
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: Simon Holesch <simon.holesch@...g.com>,
	Karthikdatt Anantharamrao <karthikdatt.anantharamrao@...bosch.com>,
	michael@...rulasolutions.com,
	linux-amarula@...rulasolutions.com,
	Wolfgang Birkner <wolfgang.birkner@...g.com>,
	Dario Binacchi <dario.binacchi@...rulasolutions.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/9] arm64: dts: imx8mn-bsh-smm-s2-common: Define suspend voltage threshold

From: Michael Trimarchi <michael@...rulasolutions.com>

Voltage threshold should be adjust according to the worst case.

Signed-off-by: Michael Trimarchi <michael@...rulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---

 .../boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi  | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
index bbb07c650da9..5a1ec2f6a552 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-bsh-smm-s2-common.dtsi
@@ -105,6 +105,12 @@ buck1_reg: BUCK1 {
 				regulator-boot-on;
 				regulator-always-on;
 				regulator-ramp-delay = <1250>;
+
+				/* enable autosuspend threshold */
+				rohm,dvs-run-voltage = <850000>;
+				rohm,dvs-idle-voltage = <850000>;
+				rohm,dvs-suspend-voltage = <850000>;
+				rohm,no-regulator-enable-control;
 			};
 
 			buck2_reg: BUCK2 {
@@ -115,6 +121,11 @@ buck2_reg: BUCK2 {
 				regulator-boot-on;
 				regulator-always-on;
 				regulator-ramp-delay = <1250>;
+
+				/* enable autosuspend threshold */
+				rohm,dvs-run-voltage = <960000>;
+				rohm,dvs-idle-voltage = <860000>;
+				rohm,no-regulator-enable-control;
 			};
 
 			buck3_reg: BUCK3 {
-- 
2.43.0