[PATCH v1 2/7] arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for PCIe M.2 connector

[Richard Zhu]

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 at nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 3730792daf501..3942b1fe75d00 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -710,6 +710,7 @@ &pcie0 {
 	pinctrl-0 = <&pinctrl_pcie0>;
 	reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>;
 	vpcie-supply = <&reg_pcie0>;
+	vpcie3v3aux-supply = <&reg_pcie0>;
 	status = "okay";
 };
 
-- 
2.37.1