[PATCH v3 5/5] arm64: dts: imx8mq-evk: Enable PCIE0 interface

[Andrey Smirnov]

Enable PCIE0 interface connected to BCM4356 WiFi/Bluetooth module.

Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
Cc: Shawn Guo <shawnguo@xxxxxxxxxx>
Cc: Fabio Estevam <fabio.estevam@xxxxxxx>
Cc: Chris Healy <cphealy@xxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Leonard Crestez <leonard.crestez@xxxxxxx>
Cc: "A.s. Dong" <aisheng.dong@xxxxxxx>
Cc: Richard Zhu <hongxing.zhu@xxxxxxx>
Cc: linux-imx@xxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 arch/arm64/boot/dts/freescale/imx8mq-evk.dts | 42 ++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 64acccc4bfcb..226aeb9791a5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -31,6 +31,12 @@
 		gpio = <&gpio2 19 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	pcie0_refclk: pcie0-refclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
 };
 
 &fec1 {
@@ -40,6 +46,17 @@
 	status = "okay";
 };
 
+&gpio5 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_wifi_reset>;
+
+ 	wl-reg-on {
+		gpio-hog;
+		gpios = <29 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+};
+
 &i2c1 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
@@ -131,6 +148,18 @@
 	};
 };
 
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie0>;
+	reset-gpio = <&gpio5 28 GPIO_ACTIVE_LOW>;
+	clocks = <&clk IMX8MQ_CLK_PCIE1_ROOT>,
+		 <&clk IMX8MQ_CLK_PCIE1_AUX>,
+		 <&clk IMX8MQ_CLK_PCIE1_PHY>,
+		 <&pcie0_refclk>;
+	clock-names = "pcie", "pcie_aux", "pcie_phy", "pcie_bus";
+	status = "okay";
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;
@@ -195,6 +224,13 @@
 		>;
 	};
 
+	pinctrl_pcie0: pcie0grp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B		0x76
+			MX8MQ_IOMUXC_UART4_RXD_GPIO5_IO28		0x16
+		>;
+	};
+
 	pinctrl_reg_usdhc2: regusdhc2grpgpio {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD2_RESET_B_GPIO2_IO19		0x41
@@ -300,4 +336,10 @@
 			MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0xc6
 		>;
 	};
+
+	pinctrl_wifi_reset: wifiresetgrp {
+		fsl,pins = <
+			MX8MQ_IOMUXC_UART4_TXD_GPIO5_IO29		0x16
+		>;
+	};
 };
-- 
2.20.1