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The host wake pin is a standard feature in the PCIe bus specification, so we can add this property under PCI dts node to support the host gpio wakeup feature. Example of configuring the corresponding dts property under the PCI node: host-wake-gpio = <&gpio5 21 GPIO_ACTIVE_LOW>; Sherry Sun (4): PCI: imx6: Add pci host wakeup support on imx platforms. dt-bindings: imx6q-pcie: Add host-wake-gpio property arm64: dts: imx8mp-evk: add host-wake-gpio property for pci bus arm64: dts: imx8mq-evk: add host-wake-gpio property for pci bus .../bindings/pci/fsl,imx6q-pcie.yaml | 4 ++ arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 2 + arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 2 + drivers/pci/controller/dwc/pci-imx6.c | 69 +++++++++++++++++++ 4 files changed, 77 insertions(+) -- 2.34.1