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arm64: dts: imx8mm: Add Root Port node and PERST property

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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>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Sherry Sun 2026-04-22 17:35:45 +08:00 committed by Frank Li
parent bb020f383c
commit 37f53f50b3
2 changed files with 16 additions and 0 deletions
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5
arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
View File

@ -533,6 +533,7 @@ &pcie_phy {
&pcie0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pcie0>;
/* This property is deprecated, use reset-gpios from the Root Port node. */
reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>;
clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&pcie0_refclk>,
<&clk IMX8MM_CLK_PCIE1_AUX>;
@ -559,6 +560,10 @@ &pcie0_ep {
status = "disabled";
};
&pcie0_port0 {
reset-gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
};
&sai2 {
#sound-dai-cells = <0>;
pinctrl-names = "default";

11
arch/arm64/boot/dts/freescale/imx8mm.dtsi
View File

@ -1370,6 +1370,17 @@ pcie0: 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@33800000 {