linux-kernel - [PATCH 2/3] arm64: dts: mba93xxca: Do not assert power-down pins

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Message-Id: <20250107141117.984652-3-alexander.stein@ew.tq-group.com>
Date: Tue,  7 Jan 2025 15:11:16 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
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>
Cc: Alexander Stein <alexander.stein@...tq-group.com>,
	linux@...tq-group.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] arm64: dts: mba93xxca: Do not assert power-down pins

Change the output to inactive (output-low) for active-low pins, resulting
in high-voltage of power-down pins. Thus this enables the attached
devices.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
 .../freescale/imx93-tqma9352-mba93xxca.dts    | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx93-tqma9352-mba93xxca.dts b/arch/arm64/boot/dts/freescale/imx93-tqma9352-mba93xxca.dts
index 861a028a1b165..b8ccc946c62d7 100644
--- a/arch/arm64/boot/dts/freescale/imx93-tqma9352-mba93xxca.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-tqma9352-mba93xxca.dts
@@ -448,38 +448,38 @@ expander1: gpio@71 {
 				  "WLAN_PERST#", "12V_EN";
 
 		/*
-		 * Controls the WiFi card PD pin which is low active
-		 * as power down signal. The output-high states, the signal
-		 * is active, e.g. card is powered down
+		 * Controls the WiFi card's low-active power down pin.
+		 * The output-low states, the signal is inactive,
+		 * resulting in high signal at power-down pin
 		 */
 		wlan-pd-hog {
 			gpio-hog;
 			gpios = <4 GPIO_ACTIVE_LOW>;
-			output-high;
+			output-low;
 			line-name = "WLAN_PD#";
 		};
 
 		/*
-		 * Controls the WiFi card disable pin which is low active
-		 * as disable signal. The output-high states, the signal
-		 * is active, e.g. card is disabled
+		 * Controls the WiFi card's low-active disable pin.
+		 * The output-low states, the signal is inactive,
+		 * resulting in high signal at power-down pin
 		 */
 		wlan-wdisable-hog {
 			gpio-hog;
 			gpios = <5 GPIO_ACTIVE_LOW>;
-			output-high;
+			output-low;
 			line-name = "WLAN_W_DISABLE#";
 		};
 
 		/*
-		 * Controls the WiFi card reset pin which is low active
-		 * as reset signal. The output-high states, the signal
-		 * is active, e.g. card in reset
+		 * Controls the WiFi card's reset pin.
+		 * The output-low states, the signal is inactive,
+		 * resulting in high signal at power-down pin
 		 */
 		wlan-perst-hog {
 			gpio-hog;
 			gpios = <6 GPIO_ACTIVE_LOW>;
-			output-high;
+			output-low;
 			line-name = "WLAN_PERST#";
 		};
 	};
-- 
2.34.1