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arm64: dts: imx95-19x19-evk: Add vpcie3v3aux regulator for PCIe[0,1]

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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(PCIe0) on i.MX95 19x19 EVK board.

PCIe1 uses one standard PCIe slot connector, but combines the +3.3v and
+3.3Vaux into a same 3.3v power source, and intends to let it always on.
Add vpcie3v3aux regulator to let this 3.3 V power source always on for
PCIe1 on i.MX95 19x19 EVK board too.

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 15:31:52 +08:00
committed by Shawn Guo
parent 4737f7c742
commit db82f6cda5
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
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@@ -542,6 +542,7 @@ &pcie0 {
pinctrl-names = "default";
reset-gpio = <&i2c7_pcal6524 5 GPIO_ACTIVE_LOW>;
vpcie-supply = <&reg_pcie0>;
vpcie3v3aux-supply = <&reg_pcie0>;
supports-clkreq;
status = "okay";
};
@@ -558,6 +559,7 @@ &pcie1 {
pinctrl-names = "default";
reset-gpio = <&i2c7_pcal6524 16 GPIO_ACTIVE_LOW>;
vpcie-supply = <&reg_slot_pwr>;
vpcie3v3aux-supply = <&reg_slot_pwr>;
status = "okay";
};