ARM: i.MX: karo-tx6: Support eMMC board variants

The TX6 board come with either NAND flash or eMMC as primary
storage medium. This adds support for the eMMC variants.
We can detect if we have NAND or eMMC by looking at the
bootsource which will be configured accordingly. This
way we can modify the device tree during runtime and do
not have to create a new image.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/dts/imx6qdl-tx6x.dtsi b/arch/arm/dts/imx6qdl-tx6x.dtsi
index 7584e4390c..9fe6e6a6d7 100644
--- a/arch/arm/dts/imx6qdl-tx6x.dtsi
+++ b/arch/arm/dts/imx6qdl-tx6x.dtsi
@@ -3,9 +3,16 @@
 		linux,stdout-path = &uart1;
 
 		environment-nand {
+			status = "disabled";
 			compatible = "barebox,environment";
 			device-path = &gpmi, "partname:barebox-environment";
 		};
+
+		environment-emmc {
+			status = "disabled";
+			compatible = "barebox,environment";
+			device-path = &usdhc4, "partname:boot1";
+		};
 	};
 };
 
@@ -14,6 +21,8 @@
 };
 
 &gpmi {
+	status = "disabled";
+
 	partition@0 {
 		label = "barebox";
 		reg = <0x0 0x400000>;
@@ -51,9 +60,31 @@
 				MX6QDL_PAD_GPIO_16__ENET_REF_CLK	0x4001b0b0
 			>;
 		};
+
+		pinctrl_usdhc4: usdhc4grp {
+			fsl,pins = <
+				MX6QDL_PAD_SD4_CMD__SD4_CMD		0x070b1
+				MX6QDL_PAD_SD4_CLK__SD4_CLK		0x070b1
+				MX6QDL_PAD_SD4_DAT0__SD4_DATA0		0x070b1
+				MX6QDL_PAD_SD4_DAT1__SD4_DATA1		0x070b1
+				MX6QDL_PAD_SD4_DAT2__SD4_DATA2		0x070b1
+				MX6QDL_PAD_SD4_DAT3__SD4_DATA3		0x070b1
+				MX6QDL_PAD_NANDF_ALE__SD4_RESET		0x0b0b1
+			>;
+		};
 	};
 };
 
 &ocotp {
 	barebox,provide-mac-address = <&fec 0x620>;
 };
+
+&usdhc4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc4>;
+	bus-width = <4>;
+	non-removable;
+	no-1-8-v;
+	fsl,wp-controller;
+	status = "disabled";
+};