linux-kernel - [PATCH v1] arm64: dts: imx8-colibri: Add PCIe support

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Message-ID: <20250422115051.1867349-1-max.oss.09@gmail.com>
Date: Tue, 22 Apr 2025 13:50:49 +0200
From: max.oss.09@...il.com
To: max.krummenacher@...adex.com
Cc: Conor Dooley <conor+dt@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Rob Herring <robh@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Shawn Guo <shawnguo@...nel.org>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] arm64: dts: imx8-colibri: Add PCIe support

From: Max Krummenacher <max.krummenacher@...adex.com>

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@...adex.com>

---

 .../boot/dts/freescale/imx8x-colibri.dtsi     | 29 ++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

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 @@ reg_module_vref_1v8: regulator-module-vref-1v8 {
 		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 @@ ethphy0: ethernet-phy@2 {
 	};
 };
 
+&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 @@ &mu1_m0 {
 
 /* 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 {
-- 
2.42.0