[PATCH] arm64: dts: imx8mp: Add PCIe support to DH electronics i.MX8M Plus DHCOM and PDK2

[Marek Vasut <marex@denx.de>]

Add PCIe support for DH electronics i.MX8M Plus DHCOM SoM on PDK2 carrier board.

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: kernel@dh-electronics.com
Cc: linux-arm-kernel@lists.infradead.org
---
 .../arm64/boot/dts/freescale/imx8mp-dhcom-pdk2.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk2.dts b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk2.dts
index 382fbedaf6ba4..fdf18b7f208d5 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk2.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk2.dts
@@ -151,6 +151,20 @@ &flexcan1 {
 	status = "okay";
 };
 
+&pcie_phy {
+	clock-names = "ref";
+	clocks = <&clk IMX8MP_SYS_PLL2_100M>;
+	fsl,clkreq-unsupported;
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_UNUSED>;
+	status = "okay";
+};
+
+&pcie {
+	fsl,max-link-speed = <1>;
+	reset-gpio = <&gpio1 6 GPIO_ACTIVE_LOW>;	/* GPIO J */
+	status = "okay";
+};
+
 &usb3_1 {
 	fsl,over-current-active-low;
 };
-- 
2.39.1