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arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for PCIe M.2 connector

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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.MX8MP EVK 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>
This commit is contained in:
Richard Zhu 2025-10-24 15:31:47 +08:00 committed by Shawn Guo
parent 55a79e599a
commit caf08e2d49
1 changed files with 1 additions and 0 deletions
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arch/arm64/boot/dts/freescale/imx8mp-evk.dts
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@ -710,6 +710,7 @@
pinctrl-0 = <&pinctrl_pcie0>;
reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>;
vpcie-supply = <&reg_pcie0>;
vpcie3v3aux-supply = <&reg_pcie0>;
supports-clkreq;
status = "okay";
};