arm64: dts: imx8mq-evk: Enable PCIE0 interface

Enable PCIE0 interface connected to BCM4356 WiFi/Bluetooth module.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: linux-imx@nxp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
index 304c28034ddfac52e445322b5e3a22204535458c..ec430b3c35d4a0f89a110fa22ff5fde6e6268a26 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk.dts
@@ -21,6 +21,12 @@ memory@40000000 {
                reg = <0x00000000 0x40000000 0 0xc0000000>;
        };
 
+       pcie0_refclk: pcie0-refclk {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <100000000>;
+       };
+
        reg_usdhc2_vmmc: regulator-vsd-3v3 {
                pinctrl-names = "default";
                pinctrl-0 = <&pinctrl_reg_usdhc2>;
@@ -118,6 +124,17 @@ &sai2 {
        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";
@@ -209,6 +226,18 @@ vgen6_reg: vgen6 {
        };
 };
 
+&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>;
@@ -303,6 +332,13 @@ MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA                     0x4000007f
                >;
        };
 
+       pinctrl_pcie0: pcie0grp {
+               fsl,pins = <
+                       MX8MQ_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B            0x76
+                       MX8MQ_IOMUXC_UART4_RXD_GPIO5_IO28               0x16
+               >;
+       };
+
        pinctrl_qspi: qspigrp {
                fsl,pins = <
                        MX8MQ_IOMUXC_NAND_ALE_QSPI_A_SCLK       0x82
@@ -430,4 +466,10 @@ pinctrl_wdog: wdog1grp {
                        MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B            0xc6
                >;
        };
+
+       pinctrl_wifi_reset: wifiresetgrp {
+               fsl,pins = <
+                       MX8MQ_IOMUXC_UART4_TXD_GPIO5_IO29               0x16
+               >;
+       };
 };