MA-12664 Refine dts file for android auto

Remove some unnecessary nodes based on default dts file to reduce
u-boot boot time, add node '/config/load-environment' and set its
value as '0' to tell u-boot not to load environment variables from
eMMC.
This commit can save about 220ms on imx8qxp and about 270ms on imx8qm..

Test: Boots ok on both imx8qm/imx8qxp.

Change-Id: If2010e0a537a6ae322f51c771d2eee723a089e50
Signed-off-by: Luo Ji <ji.luo@nxp.com>

4 files changed, 144 insertions, 2 deletions

diff --git a/arch/arm/dts/fsl-imx8qm-mek-auto.dts b/arch/arm/dts/fsl-imx8qm-mek-auto.dts
new file mode 100644
index 0000000000..e2ee4a91d7
--- /dev/null
+++ b/arch/arm/dts/fsl-imx8qm-mek-auto.dts
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2017 NXP
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+
+#include "fsl-imx8qm-mek.dts"
+
+/ {
+	config {
+		load-environment = <0>;
+	};
+};
+
+&gpio2 {
+	status = "disabled";
+};
+
+&gpio4 {
+	status = "disabled";
+};
+
+&gpio5 {
+	status = "disabled";
+};
+
+&usdhc2 {
+	status = "disabled";
+};
+
+&usbotg1 {
+	status = "disabled";
+};
+
+&usb2 {
+	status = "disabled";
+};
+
+&fec1 {
+	status = "disabled";
+};
+
+&fec2 {
+	status = "disabled";
+};
+
+&flexspi0 {
+	status = "disabled";
+};
+
+&i2c1_lvds0 {
+	status = "disabled";
+};
+
+&i2c1_lvds1 {
+	status = "disabled";
+};
+
+&lpspi0 {
+	status = "disabled";
+};
diff --git a/arch/arm/dts/fsl-imx8qxp-mek-auto.dts b/arch/arm/dts/fsl-imx8qxp-mek-auto.dts
new file mode 100644
index 0000000000..ab90312e5a
--- /dev/null
+++ b/arch/arm/dts/fsl-imx8qxp-mek-auto.dts
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+
+#include "fsl-imx8qxp-mek.dts"
+
+/ {
+	config {
+		load-environment = <0>;
+	};
+};
+
+&gpio0 {
+	status = "disabled";
+};
+
+&gpio1 {
+	status = "disabled";
+};
+
+&gpio3 {
+	status = "disabled";
+};
+
+&gpio4 {
+	status = "disabled";
+};
+
+&fec1 {
+	status = "disabled";
+};
+
+&fec2 {
+	status = "disabled";
+};
+
+&flexspi0 {
+	status = "disabled";
+};
+
+&i2c0_mipi_lvds0 {
+	status = "disabled";
+};
+
+&i2c0_mipi_lvds1 {
+	status = "disabled";
+};
+
+&usdhc2 {
+	status = "disabled";
+};
+
+&usbotg1 {
+	status = "disabled";
+};
+
+&usb2 {
+	status = "disabled";
+};
diff --git a/configs/imx8qm_mek_androidauto_defconfig b/configs/imx8qm_mek_androidauto_defconfig
index 1b0393dac0..3f5b74765d 100644
--- a/configs/imx8qm_mek_androidauto_defconfig
+++ b/configs/imx8qm_mek_androidauto_defconfig
@@ -1,6 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_IMX8=y
-CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8qm-mek"
+CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8qm-mek-auto"
 CONFIG_SYS_EXTRA_OPTIONS="ANDROID_AUTO_SUPPORT"
 CONFIG_TARGET_IMX8QM_MEK=y
 CONFIG_SYS_TEXT_BASE=0x80020000
diff --git a/configs/imx8qxp_mek_androidauto_defconfig b/configs/imx8qxp_mek_androidauto_defconfig
index 59ca37880b..79922a03a6 100644
--- a/configs/imx8qxp_mek_androidauto_defconfig
+++ b/configs/imx8qxp_mek_androidauto_defconfig
@@ -1,6 +1,6 @@
 CONFIG_ARM=y
 CONFIG_ARCH_IMX8=y
-CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8qxp-mek"
+CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8qxp-mek-auto"
 CONFIG_SYS_EXTRA_OPTIONS="ANDROID_AUTO_SUPPORT"
 CONFIG_TARGET_IMX8QXP_MEK=y
 CONFIG_SYS_TEXT_BASE=0x80020000