imx6: aristainetos: prepare dts for other board versions
as we switch to support DM and DTS, rework the existing
DTS trees. Change also Linux specific Device trees, goal
is to push this changes to linux.
Collect U-Boot specific changes in separate "*u-boot*" dts
files.
Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/arch/arm/dts/imx6qdl-aristainetos2-u-boot.dtsi b/arch/arm/dts/imx6qdl-aristainetos2-u-boot.dtsi
new file mode 100644
index 0000000..c713efd
--- /dev/null
+++ b/arch/arm/dts/imx6qdl-aristainetos2-u-boot.dtsi
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Heiko Schocher <hs@denx.de>
+ */
+
+/ {
+ chosen {
+ u-boot,dm-pre-reloc;
+ stdout-path = &uart2;
+ };
+
+ wdt-reboot {
+ compatible = "wdt-reboot";
+ wdt = <&wdog1>;
+ };
+};
+
+&uart2 {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl_gpio {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl_uart2 {
+ u-boot,dm-pre-reloc;
+};
+
+&aips2 {
+ u-boot,dm-pre-reloc;
+};
+
+&backlight {
+ pwms = <&pwm1 0 300000>;
+ default-brightness-level = <2>;
+};
+
+/*
+ * allow switching write protect pin by gpio,
+ * because "pinctrl-assert-gpios" from &ecspi1 isn't handled by u-boot
+ */
+&gpio2 {
+ u-boot,dm-pre-reloc;
+
+ wp_spi_nor {
+ gpio-hog;
+ output-high;
+ gpios = <15 GPIO_ACTIVE_HIGH>;
+ };
+};
+
+&iomuxc {
+ pinctrl-0 = <&pinctrl_gpio &pinctrl_gpio_fix>;
+ u-boot,dm-pre-reloc;
+
+ pinctrl_gpio_fix: gpiofixgrp {
+ /*
+ * usdhc2 has a levelshifter on the carrier board Rev. DV1,
+ * that will automatically detect the driving direction.
+ * During initialisation this isn't working correctly,
+ * which causes DAT3 to be driven low towards the SD-card.
+ * This causes a SD-card enetring the SPI-Mode
+ * and therefore getting inaccessible until next power cycle.
+ * As workaround we drive the DAT3 line as GPIO and set it high.
+ * This makes usdhc2 unusable in u-boot, but works for the
+ * initialisation in Linux
+ */
+ fsl,pins = <
+ MX6QDL_PAD_SD2_DAT3__GPIO1_IO12 0x20000
+ >;
+ };
+};
+
+&gpio1 {
+ usdhc_fix {
+ gpio-hog;
+ output-high;
+ gpios = <12 GPIO_ACTIVE_HIGH>;
+ };
+};
+
+&gpio3 {
+ u-boot,dm-pre-reloc;
+};
+
+&gpio5 {
+ u-boot,dm-pre-reloc;
+};
+
+&ecspi4 {
+ u-boot,dm-pre-reloc;
+};
+
+&flash {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl_ecspi4 {
+ u-boot,dm-pre-reloc;
+};