[PATCH V11 07/12] arm: dts: imx7d: Add Root Port node and PERST property

Sherry Sun
2026-04-07T10:42:39Z

Since describing the PCIe PERST# property under Host Bridge node is now
deprecated, it is recommended to add it to the Root Port node, so
creating the Root Port node and add the reset-gpios property in Root
Port.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
arch/arm/boot/dts/nxp/imx/imx7d-sdb.dts | 5 +++++
arch/arm/boot/dts/nxp/imx/imx7d.dtsi | 11 +++++++++++
2 files changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/imx7d-sdb.dts b/arch/arm/boot/dts/nxp/imx/imx7d-sdb.dts
index a370e868cafe..0046b276b8b9 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7d-sdb.dts
+++ b/arch/arm/boot/dts/nxp/imx/imx7d-sdb.dts
@@ -456,10 +456,15 @@ display_out: endpoint {
};

&pcie {
+ /* This property is deprecated, use reset-gpios from the Root Port node. */
reset-gpio = <&extended_io 1 GPIO_ACTIVE_LOW>;
status = "okay";
};

+&pcie_port0 {
+ reset-gpios = <&extended_io 1 GPIO_ACTIVE_LOW>;
+};
+
&reg_1p0d {
vin-supply = <&sw2_reg>;
};
diff --git a/arch/arm/boot/dts/nxp/imx/imx7d.dtsi b/arch/arm/boot/dts/nxp/imx/imx7d.dtsi
index d961c61a93af..3c5c1f2c1460 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7d.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7d.dtsi
@@ -155,6 +155,17 @@ pcie: pcie@33800000 {
reset-names = "pciephy", "apps", "turnoff";
fsl,imx7d-pcie-phy = <&pcie_phy>;
status = "disabled";
+
+ pcie_port0: pcie@0 {
+ compatible = "pciclass,0604";
+ device_type = "pci";
+ reg = <0x0 0x0 0x0 0x0 0x0>;
+ bus-range = <0x01 0xff>;
+
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges;
+ };
};
};
};
--
2.37.1