linux-kernel - [PATCH v1 3/5] arm64: dts: imx8mq-librem5-devkit: Mark buck2 as always on

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Date:   Wed,  9 Aug 2023 20:50:12 +0200
From:   Guido Günther <agx@...xcpu.org>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Guido Günther <agx@...xcpu.org>,
        Peng Fan <peng.fan@....com>,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        Arnd Bergmann <arnd@...db.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>,
        Rafał Miłecki <rafal@...ecki.pl>,
        kernel@...i.sm, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        David Heidelberg <david@...t.cz>
Subject: [PATCH v1 3/5] arm64: dts: imx8mq-librem5-devkit: Mark buck2 as always on

Otherwise the A53 cores are shut down which doesn't end well.

Reported-by: David Heidelberg <david@...t.cz>
Tested-by: David Heidelberg <david@...t.cz>
Signed-off-by: Guido Günther <agx@...xcpu.org>
---
 arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index b3549eae6278..be9ef5c271df 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -324,6 +324,7 @@ buck2_reg: BUCK2 {
 				regulator-ramp-delay = <1250>;
 				rohm,dvs-run-voltage = <1000000>;
 				rohm,dvs-idle-voltage = <900000>;
+				regulator-always-on;
 			};
 
 			buck3_reg: BUCK3 {
-- 
2.40.1