Thread (7 messages) read the whole thread 7 messages, 2 authors, 2026-02-18

Re: [PATCH 3/3] ARM: dts: imx7-mba7: disable boot_cfg pins after boot

From: Frank Li <Frank.li@nxp.com>
Date: 2026-02-18 16:42:48
Also in: imx, linux-devicetree, lkml

On Wed, Feb 18, 2026 at 02:54:14PM +0100, Alexander Feilke wrote:
The BOOT_CFG pins are located on the LCD bus on our starterkit.
Disable them after boot to separate those signals.
Your comments is more clear.  Is below commit massage better?

ARM: dts: imx7-mba7: Deassert BOOT_EN to separate BOOT_CFG circuits after boot

Deassert BOOT_EN after boot to separate BOOT_CFG circuits from LCD signals.

Frank
quoted hunk ↗ jump to hunk
Signed-off-by: Alexander Feilke <redacted>
---
 arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi
index 03f2f2cbdfbc..4192adb27223 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi
@@ -287,6 +287,15 @@ &flexcan2 {
 	status = "okay";
 };

+&gpio4 {
+	/* Deassert BOOT_EN after boot to separate BOOT_CFG circuits from LCD signals */
+	boot-en-hog {
+		gpio-hog;
+		gpios = <3 GPIO_ACTIVE_LOW>;
+		output-low;
+	};
+};
+
 &i2c1 {
 	lm75: temperature-sensor@49 {
 		compatible = "national,lm75a";
--
2.43.0
  
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