[PATCH v1 6/8] arm64: dts: verdin-imx8mp: add pcie support

[Marcel Ziswiler]

From: Marcel Ziswiler <marcel.ziswiler at toradex.com>

Add PCIe support on the Verdin iMX8M Plus.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>

---
This still relies on the PHY part landing [1] and the internal SYSPLL
mode getting sorted [2].

[1] https://lore.kernel.org/all/1663659498-5180-1-git-send-email-hongxing.zhu@nxp.com/
[2] https://lore.kernel.org/all/AS8PR04MB867657D03C61774096A5A1628C4C9@AS8PR04MB8676.eurprd04.prod.outlook.com/

 .../dts/freescale/imx8mp-verdin-dahlia.dtsi   |  9 +++++++-
 .../boot/dts/freescale/imx8mp-verdin.dtsi     | 22 ++++++++++++++++++-
 2 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
index 4b8f86f63081..60f9dc4847db 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-dahlia.dtsi
@@ -67,7 +67,14 @@ &i2c4 {
 	/* TODO: Audio Codec */
 };
 
-/* TODO: Verdin PCIE_1 */
+/* Verdin PCIE_1 */
+&pcie {
+	status = "okay";
+};
+
+&pcie_phy {
+	status = "okay";
+};
 
 /* Verdin PWM_1 */
 &pwm1 {
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
index 7be7e922927b..160bb32cb5f7 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
@@ -734,7 +734,27 @@ eeprom_carrier_board: eeprom at 57 {
 	};
 };
 
-/* TODO: Verdin PCIE_1 */
+/* Verdin PCIE_1 */
+&pcie {
+	assigned-clocks = <&clk IMX8MP_CLK_PCIE_AUX>;
+	assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_50M>;
+	assigned-clock-rates = <10000000>;
+	clocks = <&clk IMX8MP_CLK_HSIO_ROOT>,
+		 <&clk IMX8MP_CLK_PCIE_ROOT>,
+		 <&clk IMX8MP_CLK_HSIO_AXI>;
+	clock-names = "pcie", "pcie_aux", "pcie_bus";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pcie>;
+	/* PCIE_1_RESET# (SODIMM 244) */
+	reset-gpio = <&gpio4 19 GPIO_ACTIVE_LOW>;
+};
+
+&pcie_phy {
+	clocks = <&clk IMX8MP_CLK_HSIO_ROOT>;
+	clock-names = "ref";
+	fsl,clkreq-unsupported;
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_OUTPUT>;
+};
 
 /* Verdin PWM_1 */
 &pwm1 {
-- 
2.36.1