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>

2 files changed, 76 insertions, 2 deletions

diff --git a/board/aristainetos/MAINTAINERS b/board/aristainetos/MAINTAINERS
index 91c8ae0738e..2495cd4a370 100644
--- a/board/aristainetos/MAINTAINERS
+++ b/board/aristainetos/MAINTAINERS
@@ -4,6 +4,12 @@ S:	Maintained
 F:	board/aristainetos/
 F:	include/configs/aristainetos2.h
 F:	configs/aristainetos2_defconfig
-F:	arch/arm/dts/imx6dl-aristainetos2_4.dts
-F:	arch/arm/dts/imx6dl-aristainetos2_7.dts
 F:	arch/arm/dts/imx6qdl-aristainetos2.dtsi
+F:	arch/arm/dts/imx6qdl-aristainetos2-common.dtsi
+F:	arch/arm/dts/imx6qdl-aristainetos2-u-boot.dtsi
+F:	arch/arm/dts/imx6dl-aristainetos2_7.dts
+F:	arch/arm/dts/imx6dl-aristainetos2_7.dtsi
+F:	arch/arm/dts/imx6dl-aristainetos2_7-u-boot.dtsi
+F:	arch/arm/dts/imx6dl-aristainetos2_4.dts
+F:	arch/arm/dts/imx6dl-aristainetos2_4.dtsi
+F:	arch/arm/dts/imx6dl-aristainetos2_4-u-boot.dtsi
diff --git a/board/aristainetos/aristainetos.c b/board/aristainetos/aristainetos.c
index 11b64d08bea..b296ea25226 100644
--- a/board/aristainetos/aristainetos.c
+++ b/board/aristainetos/aristainetos.c
@@ -31,6 +31,7 @@
 #include <asm/io.h>
 #include <asm/arch/sys_proto.h>
 #include <pwm.h>
+#include <dm/root.h>
 #include <env.h>
 #include <micrel.h>
 #include <spi.h>
@@ -82,6 +83,14 @@ DECLARE_GLOBAL_DATA_PTR;
 #define SOFT_RESET_GPIO		IMX_GPIO_NR(7, 13)
 #define SD2_DRIVER_ENABLE	IMX_GPIO_NR(7, 8)
 
+enum {
+	BOARD_TYPE_4 = 4,
+	BOARD_TYPE_7 = 7,
+};
+
+#define ARI_BT_4 "aristainetos2_4@2"
+#define ARI_BT_7 "aristainetos2_7@1"
+
 struct i2c_pads_info i2c_pad_info3 = {
 	.scl = {
 		.i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
@@ -617,6 +626,7 @@ static void set_gpr_register(void)
 	       &iomuxc_regs->gpr[12]);
 }
 
+extern char __bss_start[], __bss_end[];
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
@@ -626,6 +636,14 @@ int board_early_init_f(void)
 	gpio_direction_output(SD2_DRIVER_ENABLE, 1);
 	setup_display();
 	set_gpr_register();
+
+	/*
+	 * clear bss here, so we can use spi driver
+	 * before relocation and read Environment
+	 * from spi flash.
+	 */
+	memset(__bss_start, 0x00, __bss_end - __bss_start);
+
 	return 0;
 }
 
@@ -704,6 +722,12 @@ int board_late_init(void)
 					   CONFIG_LG4573_CS,
 					   10000000, SPI_MODE_0);
 
+	/* set board_type */
+	if (gd->board_type == BOARD_TYPE_4)
+		env_set("board_type", ARI_BT_4);
+	else
+		env_set("board_type", ARI_BT_7);
+
 	return 0;
 }
 
@@ -962,6 +986,50 @@ int board_ehci_power(int port, int on)
 		gpio_set_value(ARISTAINETOS_USB_OTG_PWR, on);
 	else
 		gpio_set_value(ARISTAINETOS_USB_H1_PWR, on);
+
+	return 0;
+}
+#endif
+
+int board_fit_config_name_match(const char *name)
+{
+	if (gd->board_type == BOARD_TYPE_4 &&
+	    strchr(name, 0x34))
+		return 0;
+
+	if (gd->board_type == BOARD_TYPE_7 &&
+	    strchr(name, 0x37))
+		return 0;
+
+	return -1;
+}
+
+static void do_board_detect(void)
+{
+	int ret;
+	char s[30];
+
+	/* default use board type 7 */
+	gd->board_type = BOARD_TYPE_7;
+	if (env_init())
+		return;
+
+	ret = env_get_f("panel", s, sizeof(s));
+	if (ret < 0)
+		return;
+
+	if (!strncmp("lg4573", s, 6))
+		gd->board_type = BOARD_TYPE_4;
+}
+
+#ifdef CONFIG_DTB_RESELECT
+int embedded_dtb_select(void)
+{
+	int rescan;
+
+	do_board_detect();
+	fdtdec_resetup(&rescan);
+
 	return 0;
 }
 #endif