linux-kernel - [PATCH v2 08/10] arm64: dts: imx8mp-skov: describe mains fail detection

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250106-skov-dt-updates-v2-8-4504d3f00ecb@pengutronix.de>
Date: Mon, 06 Jan 2025 17:06:43 +0100
From: Ahmad Fatoum <a.fatoum@...gutronix.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>, 
 Oleksij Rempel <o.rempel@...gutronix.de>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 Frank Li <Frank.li@....com>, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, kernel@...gutronix.de, 
 Ahmad Fatoum <a.fatoum@...gutronix.de>
Subject: [PATCH v2 08/10] arm64: dts: imx8mp-skov: describe mains fail
 detection

From: Oleksij Rempel <o.rempel@...gutronix.de>

The main 24V regulator will toggle GPIO4_IO23 to signal imminent voltage
loss. Reflect this in the DT, so the OS can take appropriate action when
this happens.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
---
v1 -> v2:
  - no change
---
 arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
index bce23d62cd277b89ec9ce5ed3651cfe787987158..80d212acc0c33af0b2a812e0b03b36dbb6b3b3fd 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
@@ -116,6 +116,11 @@ reg_24v: regulator-24v {
 		regulator-name = "24V";
 		regulator-min-microvolt = <24000000>;
 		regulator-max-microvolt = <24000000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_reg24v>;
+		interrupts-extended = <&gpio4 23 IRQ_TYPE_EDGE_FALLING>;
+		system-critical-regulator;
+		regulator-uv-less-critical-window-ms = <50>;
 	};
 
 	reg_can2rs: regulator-can2rs {
@@ -591,6 +596,12 @@ MX8MP_IOMUXC_SAI3_MCLK__PWM4_OUT			0x116
 		>;
 	};
 
+	pinctrl_reg24v: reg24vgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_RXD0__GPIO4_IO23			0x154
+		>;
+	};
+
 	pinctrl_reg_vsd_3v3: regvsd3v3grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x40

-- 
2.39.5