mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-08-31 03:35:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

arm64: dts: imx8qm-mek: Add vpcie3v3aux regulator for PCIe M.2 connector

Browse Source 
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.MX8QM MEK board.

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 15:31:49 +08:00
committed by Shawn Guo
parent 6fa16090ef
commit f4303fa035
1 changed files with 1 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/freescale/imx8qm-mek.dts
View File

@@ -784,6 +784,7 @@ &pciea {
pinctrl-names = "default";
reset-gpio = <&lsio_gpio4 29 GPIO_ACTIVE_LOW>;
vpcie-supply = <&reg_pciea>;
vpcie3v3aux-supply = <&reg_pciea>;
supports-clkreq;
status = "okay";
};