From: Max Krummenacher <max.krummenacher@toradex.com>
Date: Tue, 22 Apr 2025 11:50:49 +0000 (+0200)
Subject: arm64: dts: imx8-colibri: Add PCIe support
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a504243058747fd02c58b17191546e346a64a604;p=users%2Fjedix%2Flinux-maple.git

arm64: dts: imx8-colibri: Add PCIe support

The needed drivers to support PCIe for i.MX 8QXP have been
added.
Configure PCIe for the Colibri iMX8X SoM.

The pcieb block is connected to the on module Wi-Fi/BT module.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
index ecb35c6b67f5..e602d147e39b 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
@@ -52,6 +52,15 @@
 		regulator-name = "vref-1v8";
 	};
 
+	reg_module_wifi: regulator-module-wifi {
+		compatible = "regulator-fixed";
+		gpio = <&gpio_expander_43 6 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-always-on;
+		regulator-name = "Wi-Fi_PDn";
+		startup-delay-us = <2000>;
+	};
+
 	reg_usbh_vbus: regulator-usbh-vbus {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
@@ -261,6 +270,16 @@
 	};
 };
 
+&hsio_phy {
+	fsl,hsio-cfg = "pciea-x2-pcieb";
+	fsl,refclk-pad-mode = "input";
+	status = "okay";
+};
+
+&hsio_refb_clk {
+	enable-gpios = <&gpio_expander_43 3 GPIO_ACTIVE_HIGH>;
+};
+
 /* Colibri SPI */
 &lpspi2 {
 	pinctrl-names = "default";
@@ -454,7 +473,15 @@
 
 /* TODO MIPI DSI with DSI-to-HDMI bridge lt8912 */
 
-/* TODO on-module PCIe for Wi-Fi */
+/* On-module PCIe for Wi-Fi */
+&pcieb {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcieb>;
+	phys = <&hsio_phy 0 PHY_TYPE_PCIE 0>;
+	phy-names = "pcie-phy";
+	reset-gpios = <&lsio_gpio4 0 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
 
 /* On-module I2S */
 &sai0 {