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 ecb35c6b67f597f6eee1b159e5adffee2eb1144f..e602d147e39b937ef6e1ff3f45d3df685784ee9f 100644 (file)
--- 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 {