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arm64: dts: imx8mq-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.MX8MQ 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 15:31:48 +08:00
committed by Shawn Guo
parent caf08e2d49
commit 6fa16090ef
1 changed files with 1 additions and 0 deletions
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1
arch/arm64/boot/dts/freescale/imx8mq-evk.dts
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@@ -398,6 +398,7 @@ &pcie1 {
<&clk IMX8MQ_CLK_PCIE2_PHY>,
<&clk IMX8MQ_CLK_PCIE2_AUX>;
vpcie-supply = <&reg_pcie1>;
vpcie3v3aux-supply = <&reg_pcie1>;
vph-supply = <&vgen5_reg>;
supports-clkreq;
status = "okay";