[PATCH V3 07/10] arm64: dts: imx8mp: Add Root Port node and PERST property
From: Sherry Sun <hidden>
Date: 2026-02-03 01:56:01
Also in:
imx, linux-devicetree, linux-pci, lkml
Subsystem:
arm/freescale imx / mxc arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
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 <redacted> --- arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 5 +++++ arch/arm64/boot/dts/freescale/imx8mp.dtsi | 11 +++++++++++ 2 files changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index b256be710ea1..3f9b3fab8ac3 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts@@ -762,6 +762,7 @@ &pcie_phy { &pcie0 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pcie0>; + /* This property is deprecated, use reset-gpios from the Root Port node. */ reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>; vpcie-supply = <®_pcie0>; vpcie3v3aux-supply = <®_pcie0>;
@@ -775,6 +776,10 @@ &pcie0_ep { status = "disabled"; }; +&pcie0_port0 { + reset-gpios = <&gpio2 7 GPIO_ACTIVE_LOW>; +}; + &pwm1 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm1>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 9b2b3a9bf9e8..f66667735a02 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi@@ -2266,6 +2266,17 @@ pcie0: pcie: pcie@33800000 { phys = <&pcie_phy>; phy-names = "pcie-phy"; status = "disabled"; + + pcie0_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; + }; }; pcie0_ep: pcie_ep: pcie-ep@33800000 {
--
2.37.1