From: Richard Zhu <hongxing.zhu@nxp.com>
Date: Fri, 24 Oct 2025 07:31:49 +0000 (+0800)
Subject: arm64: dts: imx8qm-mek: Add vpcie3v3aux regulator for PCIe M.2 connector
X-Git-Tag: v6.19-rc1~100^2~20^2~70
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f4303fa035539e8a30920545b92d90251001fc83;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: imx8qm-mek: Add vpcie3v3aux regulator for PCIe M.2 connector

Refer to PCI Express M.2 Specification r5.1 sec3.1.1 Power Sources and
Grounds.

PCI Express M.2 Socket 1 utilizes a 3.3 V power source. The voltage
source, 3.3 V, is expected to be available during the system’s
stand-by/suspend state to support wake event processing on the
communications card.

Add vpcie3v3aux regulator to let this 3.3 V power source always on for
PCIe M.2 Key E connector on i.MX8QM MEK board.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
index 0bf2ee33618e8..09b01e56ea004 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
@@ -784,6 +784,7 @@
 	pinctrl-names = "default";
 	reset-gpio = <&lsio_gpio4 29 GPIO_ACTIVE_LOW>;
 	vpcie-supply = <&reg_pciea>;
+	vpcie3v3aux-supply = <&reg_pciea>;
 	supports-clkreq;
 	status = "okay";
 };