From: Richard Zhu <hongxing.zhu@nxp.com>
Date: Fri, 24 Oct 2025 07:31:50 +0000 (+0800)
Subject: arm64: dts: imx8qxp-mek: Add vpcie3v3aux regulator for PCIe M.2 connector
X-Git-Tag: v6.19-rc1~100^2~20^2~69
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b64620022d96743a8f55e67a48a7ab48a6782691;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: imx8qxp-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.MX8QXP 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/imx8qxp-mek.dts b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
index 7c773782393d2..e092e136854ba 100644
--- a/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qxp-mek.dts
@@ -640,6 +640,7 @@
 	pinctrl-names = "default";
 	reset-gpios = <&lsio_gpio4 0 GPIO_ACTIVE_LOW>;
 	vpcie-supply = <&reg_pcieb>;
+	vpcie3v3aux-supply = <&reg_pcieb>;
 	supports-clkreq;
 	status = "okay";
 };