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From: Heiko Thiery <heiko.thiery@gmail.com>
To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Krzysztof Kozlowski <krzk@kernel.org>,
	Michael Walle <michael@walle.cc>,
	Joakim Zhang <qiangqing.zhang@nxp.com>,
	Shengjiu Wang <shengjiu.wang@nxp.com>,
	Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Heiko Thiery <heiko.thiery@gmail.com>,
	Frieder Schrempf <frieder.schrempf@kontron.de>
Subject: [PATCH] arm64: dts: imx8mm-kontron-n801x-som: do not allow to switch off buck2
Date: Wed, 15 Sep 2021 14:03:26 +0200	[thread overview]
Message-ID: <20210915120325.20248-1-heiko.thiery@gmail.com> (raw)

The buck2 output of the PMIC is the VDD core voltage of the cpu.
Switching off this will poweroff the CPU. Add the 'regulator-always-on'
property to avoid this.

Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
index d0456daefda8..9db9b90bf2bc 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
@@ -102,6 +102,7 @@ reg_vdd_arm: BUCK2 {
 				regulator-min-microvolt = <850000>;
 				regulator-max-microvolt = <950000>;
 				regulator-boot-on;
+				regulator-always-on;
 				regulator-ramp-delay = <3125>;
 				nxp,dvs-run-voltage = <950000>;
 				nxp,dvs-standby-voltage = <850000>;
-- 
2.30.0


WARNING: multiple messages have this Message-ID (diff)
From: Heiko Thiery <heiko.thiery@gmail.com>
To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Krzysztof Kozlowski <krzk@kernel.org>,
	Michael Walle <michael@walle.cc>,
	Joakim Zhang <qiangqing.zhang@nxp.com>,
	Shengjiu Wang <shengjiu.wang@nxp.com>,
	Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Heiko Thiery <heiko.thiery@gmail.com>,
	Frieder Schrempf <frieder.schrempf@kontron.de>
Subject: [PATCH] arm64: dts: imx8mm-kontron-n801x-som: do not allow to switch off buck2
Date: Wed, 15 Sep 2021 14:03:26 +0200	[thread overview]
Message-ID: <20210915120325.20248-1-heiko.thiery@gmail.com> (raw)

The buck2 output of the PMIC is the VDD core voltage of the cpu.
Switching off this will poweroff the CPU. Add the 'regulator-always-on'
property to avoid this.

Fixes: 8668d8b2e67f ("arm64: dts: Add the Kontron i.MX8M Mini SoMs and baseboards")
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
---
 arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
index d0456daefda8..9db9b90bf2bc 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
@@ -102,6 +102,7 @@ reg_vdd_arm: BUCK2 {
 				regulator-min-microvolt = <850000>;
 				regulator-max-microvolt = <950000>;
 				regulator-boot-on;
+				regulator-always-on;
 				regulator-ramp-delay = <3125>;
 				nxp,dvs-run-voltage = <950000>;
 				nxp,dvs-standby-voltage = <850000>;
-- 
2.30.0


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             reply	other threads:[~2021-09-15 12:04 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15 12:03 Heiko Thiery [this message]
2021-09-15 12:03 ` [PATCH] arm64: dts: imx8mm-kontron-n801x-som: do not allow to switch off buck2 Heiko Thiery
2021-09-15 12:05 ` Michael Walle
2021-09-15 12:05   ` Michael Walle
2021-09-15 12:09   ` Frieder Schrempf
2021-09-15 12:09     ` Frieder Schrempf
2021-09-17  7:28     ` Heiko Thiery
2021-09-17  7:28       ` Heiko Thiery
2021-09-17  8:21       ` Michael Walle
2021-09-17  8:21         ` Michael Walle
2021-09-17  8:51         ` Heiko Thiery
2021-09-17  8:51           ` Heiko Thiery
2021-09-17 11:44       ` Lucas Stach
2021-09-17 11:44         ` Lucas Stach
2021-09-17 16:10         ` Heiko Thiery
2021-09-17 16:10           ` Heiko Thiery
2021-09-20  7:31           ` Frieder Schrempf
2021-09-20  7:31             ` Frieder Schrempf
2021-09-20  7:43             ` Michael Walle
2021-09-20  7:43               ` Michael Walle
2021-09-20  8:10               ` Lucas Stach
2021-09-20  8:10                 ` Lucas Stach
2021-10-04 12:39 ` Shawn Guo
2021-10-04 12:39   ` Shawn Guo

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