linux-kernel - [PATCH v1 0/7] Add vpcie3v3aux regulator for i.MX PCIe M.2 connector

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Message-Id: <20251024073152.902735-1-hongxing.zhu@nxp.com>
Date: Fri, 24 Oct 2025 15:31:45 +0800
From: Richard Zhu <hongxing.zhu@....com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	frank.li@....com,
	s.hauer@...gutronix.de,
	festevam@...il.com
Cc: kernel@...gutronix.de,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/7] Add vpcie3v3aux regulator for i.MX 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.

But the current vpcie regulator may be gated off during system suspend. To
avoid the DT back-compatibility break, add vpcie3v3aux regulator to let this
3.3 V power source always on for PCIe M.2 Key E connector on the boards.

[PATCH v1 1/7] arm64: dts: imx8dxl-evk: Add vpcie3v3aux regulator for
[PATCH v1 2/7] arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for
[PATCH v1 3/7] arm64: dts: imx8mq-evk: Add vpcie3v3aux regulator for
[PATCH v1 4/7] arm64: dts: imx8qm-mek: Add vpcie3v3aux regulator for
[PATCH v1 5/7] arm64: dts: imx8qxp-mek: Add vpcie3v3aux regulator for
[PATCH v1 6/7] arm64: dts: imx95-15x15-evk: Add vpcie3v3aux regulator
[PATCH v1 7/7] arm64: dts: imx95-19x19-evk: Add vpcie3v3aux regulator

arch/arm64/boot/dts/freescale/imx8dxl-evk.dts     | 1 +
arch/arm64/boot/dts/freescale/imx8mp-evk.dts      | 1 +
arch/arm64/boot/dts/freescale/imx8mq-evk.dts      | 1 +
arch/arm64/boot/dts/freescale/imx8qm-mek.dts      | 1 +
arch/arm64/boot/dts/freescale/imx8qxp-mek.dts     | 1 +
arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts | 1 +
arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts | 2 ++
7 files changed, 8 insertions(+)