linux-kernel - [PATCH] arm64: dts: imx8mp-verdin: board regulators: add always-on

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Date:   Thu,  1 Sep 2022 13:04:22 +0200
From:   Max Krummenacher <max.oss.09@...il.com>
To:     Max Krummenacher <max.krummenacher@...adex.com>
Cc:     Fabio Estevam <festevam@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: imx8mp-verdin: board regulators: add always-on

From: Max Krummenacher <max.krummenacher@...adex.com>

These regulators are switched on by HW during power up and can not
be influenced by SW.
Set the always-on property.

Signed-off-by: Max Krummenacher <max.krummenacher@...adex.com>

---

 arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
index 557cfef8f049..76cc89296150 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
@@ -62,6 +62,7 @@ button-wakeup {
 	/* Carrier Board Supplies */
 	reg_1p8v: regulator-1p8v {
 		compatible = "regulator-fixed";
+		regulator-always-on;
 		regulator-max-microvolt = <1800000>;
 		regulator-min-microvolt = <1800000>;
 		regulator-name = "+V1.8_SW";
@@ -69,6 +70,7 @@ reg_1p8v: regulator-1p8v {
 
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
+		regulator-always-on;
 		regulator-max-microvolt = <3300000>;
 		regulator-min-microvolt = <3300000>;
 		regulator-name = "+V3.3_SW";
@@ -76,6 +78,7 @@ reg_3p3v: regulator-3p3v {
 
 	reg_5p0v: regulator-5p0v {
 		compatible = "regulator-fixed";
+		regulator-always-on;
 		regulator-max-microvolt = <5000000>;
 		regulator-min-microvolt = <5000000>;
 		regulator-name = "+V5_SW";
-- 
2.35.3