colibri-imx6ull: add emmc variant

Add code to build the eMMC variant of the Colibri iMX6ULL, i.e. the
'Colibri iMX6ULL 1GB' which has a eMMC instead of the raw NAND used
on other SKUs.

Related-to: ELB-4056, ELB-4057
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/arch/arm/dts/imx6ull-colibri-emmc.dts b/arch/arm/dts/imx6ull-colibri-emmc.dts
new file mode 100644
index 0000000..cbb561f
--- /dev/null
+++ b/arch/arm/dts/imx6ull-colibri-emmc.dts
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2021 Toradex AG
+ */
+
+#include "imx6ull-colibri.dtsi"
+#include "imx6ull-colibri-u-boot.dtsi"
+
+/ {
+	model = "Toradex Colibri iMX6ULL 1GB (eMMC)";
+	compatible = "toradex,colibri-imx6ull-emmc", "toradex,colibri-imx6ull", "fsl,imx6ull";
+
+	aliases {
+		mmc0 = &usdhc2;
+		mmc1 = &usdhc1;
+	};
+};
+
+/* eMMC */
+&usdhc2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc2emmc>;
+	assigned-clocks = <&clks IMX6UL_CLK_USDHC2_SEL>, <&clks IMX6UL_CLK_USDHC2>;
+	assigned-clock-parents = <&clks IMX6UL_CLK_PLL2_PFD2>;
+	assigned-clock-rates = <0>, <198000000>;
+	bus-width = <8>;
+	keep-power-in-suspend;
+	no-1-8-v;
+	non-removable;
+	vmmc-supply = <&reg_module_3v3>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_usdhc2emmc: usdhc2emmcgrp {
+		fsl,pins = <
+			MX6UL_PAD_NAND_RE_B__USDHC2_CLK     0x17059
+			MX6UL_PAD_NAND_WE_B__USDHC2_CMD     0x17059
+			MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+			MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+			MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+			MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+			MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+			MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+			MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+			MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+		>;
+	};
+};