dra7: Allow selecting a new dtb after board detection.
The DRA7 platforms requires that the dtb used in the SPL really matches the
platform to have the best MMC performances.
To detect the board type/version an I2C EEPROM is read. This requires that
DM is initialized before the detection. As a consequence we must reset the
DM after the board detection is a new dtb would better match the platform.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/arch/arm/mach-omap2/hwinit-common.c b/arch/arm/mach-omap2/hwinit-common.c
index d0781d7..772b4c4 100644
--- a/arch/arm/mach-omap2/hwinit-common.c
+++ b/arch/arm/mach-omap2/hwinit-common.c
@@ -12,6 +12,7 @@
*/
#include <common.h>
#include <debug_uart.h>
+#include <fdtdec.h>
#include <spl.h>
#include <asm/arch/sys_proto.h>
#include <linux/sizes.h>
@@ -19,6 +20,7 @@
#include <asm/omap_common.h>
#include <linux/compiler.h>
#include <asm/system.h>
+#include <dm/root.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -171,6 +173,10 @@
*/
void early_system_init(void)
{
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_MULTI_DTB_FIT)
+ int ret;
+ int rescan;
+#endif
init_omap_revision();
hw_data_init();
init_package_revision();
@@ -186,6 +192,7 @@
do_io_settings();
#endif
setup_early_clocks();
+
#ifdef CONFIG_SPL_BUILD
/*
* Save the boot parameters passed from romcode.
@@ -197,6 +204,19 @@
#endif
do_board_detect();
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_MULTI_DTB_FIT)
+ /*
+ * Board detection has been done.
+ * Let us see if another dtb wouldn't be a better match
+ * for our board
+ */
+ ret = fdtdec_resetup(&rescan);
+ if (!ret && rescan) {
+ dm_uninit();
+ dm_init_and_scan(true);
+ }
+#endif
+
vcores_init();
#ifdef CONFIG_DEBUG_UART_OMAP
debug_uart_init();
diff --git a/configs/dra7xx_evm_defconfig b/configs/dra7xx_evm_defconfig
index a57dc07..2ea1d59 100644
--- a/configs/dra7xx_evm_defconfig
+++ b/configs/dra7xx_evm_defconfig
@@ -34,11 +34,13 @@
CONFIG_DEFAULT_DEVICE_TREE="dra7-evm"
CONFIG_OF_LIST="dra7-evm dra72-evm dra72-evm-revc dra71-evm dra76-evm"
CONFIG_SPL_MULTI_DTB_FIT=y
+CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ=0x9000
CONFIG_OF_SPL_REMOVE_PROPS="clocks clock-names interrupt-parent"
CONFIG_ENV_IS_IN_MMC=y
CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
CONFIG_DM=y
CONFIG_SPL_DM=y
+CONFIG_SPL_DM_DEVICE_REMOVE=y
CONFIG_SPL_DM_SEQ_ALIAS=y
CONFIG_SPL_REGMAP=y
CONFIG_SPL_SYSCON=y