[PATCH 05/18] arm: am64x: Add support for selecting DT based on EEPROM

[Lokesh Vutla]

Enable support for selecting DTB within SPL based on EEPROM.
This will help to use single defconfig for both EVM and SK

Signed-off-by: Lokesh Vutla <lokeshvu...@ti.com>
---
 arch/arm/mach-k3/am642_init.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm/mach-k3/am642_init.c b/arch/arm/mach-k3/am642_init.c
index 2a38b843d9..885f181d58 100644
--- a/arch/arm/mach-k3/am642_init.c
+++ b/arch/arm/mach-k3/am642_init.c
@@ -20,6 +20,7 @@
 #include <dm/uclass-internal.h>
 #include <dm/pinctrl.h>
 #include <mmc.h>
+#include <dm/root.h>
 
 #if defined(CONFIG_SPL_BUILD)
 
@@ -82,6 +83,29 @@ void k3_mmc_stop_clock(void) {}
 void k3_mmc_restart_clock(void) {}
 #endif
 
+#ifdef CONFIG_SPL_OF_LIST
+void do_dt_magic(void)
+{
+       int ret, rescan;
+
+       if (IS_ENABLED(CONFIG_TI_I2C_BOARD_DETECT))
+               do_board_detect();
+
+       /*
+        * Board detection has been done.
+        * Let us see if another dtb wouldn't be a better match
+        * for our board
+        */
+       if (IS_ENABLED(CONFIG_CPU_V7R)) {
+               ret = fdtdec_resetup(&rescan);
+               if (!ret && rescan) {
+                       dm_uninit();
+                       dm_init_and_scan(true);
+               }
+       }
+}
+#endif
+
 void board_init_f(ulong dummy)
 {
 #if defined(CONFIG_K3_LOAD_SYSFW)
@@ -106,6 +130,8 @@ void board_init_f(ulong dummy)
 
        preloader_console_init();
 
+       do_dt_magic();
+
 #if defined(CONFIG_K3_LOAD_SYSFW)
        /*
         * Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue
-- 
2.30.0