linux-kernel - [PATCH v7 6/6] ARM: dts: imx53: add imx53-qsrb PMIC power button

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Message-Id: <20251031195718.1586-7-akurz@blala.de>
Date: Fri, 31 Oct 2025 19:57:18 +0000
From: Alexander Kurz <akurz@...la.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Lee Jones <lee@...nel.org>, Dzmitry Sankouski <dsankouski@...il.com>,
        Griffin Kroah-Hartman <griffin.kroah@...rphone.com>,
        Mathieu Dubois-Briand <mathieu.dubois-briand@...tlin.com>,
        Heiko Stuebner <heiko@...ech.de>,
        "Dr . David Alan Gilbert" <linux@...blig.org>,
        Job Sava <jsava@...ticallink.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Uwe Kleine-König <u.kleine-koenig@...libre.com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-input@...r.kernel.org, Alexander Kurz <akurz@...la.de>
Subject: [PATCH v7 6/6] ARM: dts: imx53: add imx53-qsrb PMIC power button

As described in the board hardware user guide IMX53RQSBRM-R.pdf, the
mc34708 pin PWRON1 is connected to a button "SW6"/"POWER", connecting
this line to GND.
Add support for the imx53-qsrb "POWER" button.

Signed-off-by: Alexander Kurz <akurz@...la.de>
---
 arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts b/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
index 2f06ad61a766..977dff72b9e2 100644
--- a/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx53-qsrb.dts
@@ -139,6 +139,19 @@ vgen2_reg: vgen2 {
 				regulator-always-on;
 			};
 		};
+
+		buttons {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			onkey@0 {
+				reg = <0>;
+				linux,code = <KEY_POWER>;
+				debounce-delay-ms = <30>;
+				active-low;
+				fsl,enable-reset;
+			};
+		};
 	};
 };
 
-- 
2.39.5