From: Richard Zhu Date: Fri, 24 Oct 2025 07:31:47 +0000 (+0800) Subject: arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for PCIe M.2 connector X-Git-Tag: v6.19-rc1~100^2~20^2~72 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=caf08e2d494ec9790abe4f65130327c38eeb9d83;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: imx8mp-evk: Add vpcie3v3aux regulator for PCIe M.2 connector 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 --- 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"; };