From caf08e2d494ec9790abe4f65130327c38eeb9d83 Mon Sep 17 00:00:00 2001 From: Richard Zhu Date: Fri, 24 Oct 2025 15:31:47 +0800 Subject: [PATCH] arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for PCIe M.2 connector MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Frank Li Signed-off-by: Shawn Guo --- 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 523bf4aeff317..f0762ba60c8ce 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts @@ -710,6 +710,7 @@ pinctrl-0 = <&pinctrl_pcie0>; reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>; vpcie-supply = <®_pcie0>; + vpcie3v3aux-supply = <®_pcie0>; supports-clkreq; status = "okay"; }; -- 2.47.3