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 <jjhib...@ti.com>
---
Changes in v2: None
arch/arm/mach-omap2/hwinit-common.c | 20 ++++++++++++++++++++
configs/dra7xx_evm_defconfig | 2 ++
2 files changed, 22 insertions(+)
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 __weak init_package_revision(void)
*/
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 @@ void early_system_init(void)
do_io_settings();
#endif
setup_early_clocks();
+
#ifdef CONFIG_SPL_BUILD
/*
* Save the boot parameters passed from romcode.
@@ -197,6 +204,19 @@ void early_system_init(void)
#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 9546b5e..b4825a5 100644
--- a/configs/dra7xx_evm_defconfig
+++ b/configs/dra7xx_evm_defconfig
@@ -34,11 +34,13 @@ CONFIG_SPL_OF_CONTROL=y
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
--
2.7.4
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