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

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>

diff --git a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
index 0f470d3eb9af48c4118d120ecfc25b839aa387b1..aaa0da55a22bc3b9bf3d96af4842d422e7c41d7b 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-19x19-evk.dts
@@ -542,6 +542,7 @@
        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 @@
        pinctrl-names = "default";
        reset-gpio = <&i2c7_pcal6524 16 GPIO_ACTIVE_LOW>;
        vpcie-supply = <&reg_slot_pwr>;
+       vpcie3v3aux-supply = <&reg_slot_pwr>;
        status = "okay";
 };